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Artykuły w czasopismach na temat "FPI CONTROLLER"
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Sheikh, M. R. I., R. Takahashi i J. Tamura. "Robust Stabilizing Controllers to Automatic Generation Control for Load Frequency Control Application". Journal of Scientific Research 2, nr 2 (26.04.2010): 285–93. http://dx.doi.org/10.3329/jsr.v2i2.3063.
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Since superconducting magnetic energy storage (SMES) unit with a self-commutated converter is capable of controlling both the active and reactive powers simultaneously and quickly, increasing attention has been focused recently on power system stabilization by SMES control. This study presents the effects of novel control strategies of self-tuned fuzzy proportional integral (FPI) controller and fuzzy frequency (FF) controller associated with the automatic generation control (AGC) including SMES unit. The effects of the self-tuning configuration with FPI controller in AGC is also compared with that of FF controlled AGC on SMES control. The simulation results show that both self tuning control schemes of AGC are very effective in damping out of the oscillations caused by load disturbances and it is also seen that the FF controlled AGC with SMES perform better primary frequency control compared to FPI controlled AGC with SMES. Keywords: Load frequency control; Single area power system; FPI controller; FF controller; SMES unit. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i2.3063 J. Sci. Res. 2 (2), 285-293 (2010)
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Alkargole, Hazim M., Abbas S. Hassan i Raoof T. Hussein. "Analyze and Evaluate the Performance Velocity Control in DC Motor". Radioelectronics. Nanosystems. Information Technologies 12, nr 4 (1.12.2020): 507–16. http://dx.doi.org/10.17725/rensit.2020.12.507.
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A mathematical model of controlling the DC motor has been applied in this paper. There are many and different types of controllers have been used with purpose of analyzing and evaluating the performance of the of DC motor which are, Fuzzy Logic Controller (FLC), Linear Quadratic Regulator (LQR), Fuzzy Proportional Derivative (FPD) ,Proportional Integral Derivative (PID), Fuzzy Proportional Derivative with integral (FPD plus I) , and Fuzzy Proportional Integral (FPI) with membership functions of 3*3, 5*5, and 7*7 rule bases. The results show that the (FLC) controller with 5*5 rule base provides the best results among all the other controllers to design the DC motor controller.
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Alawad, Nasir Ahmed. "Comparison Performance of PI and FPI Controllers for Model Reduction of Binary Distillation Column Plant". Brilliant Engineering 2, nr 1 (21.07.2020): 25–29. http://dx.doi.org/10.36937/ben.2021.001.005.
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Distillation is the separation strategy in the oil and compound businesses for cleansing of conclusive items. This paper deals with the reduced dynamic model and control of the distillation tower by applying a multi-loop control framework in Matlab/Simulink for a double blend. The structure objective considered is to guarantee that the top item, the base item, the reflux rate and the reboiler rate stray inside their recommended limits forever and for all the aggravations. This paper proposes an optimal tuning method for fractional Proportional-Integral controller (FPI). The method consists of minimizing Integral Absolute Error (IAE) performance index criterion. Acceptable controller (FPI) is acquired via looking in the space of plan boundaries (Kp,Ki). An example of application (distillation column) plant is presented to evaluate the proposed method. A comparison with classical PI controller and optimal PI shows that the system under fractional state is robust in terms of transient specifications, maximum overshot, settling and rise times. The simulation results shows that more than (21%) improvement for reducing the max-overshot and(65%)improvement for increasing response speed for fractional PI compared with classical PI.MATLAB simulation toolbox is used to show the effectives of the proposed method.
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Ko, Jae-Sub, Jun-Ho Huh i Jong-Chan Kim. "Improvement of Energy Efficiency and Control Performance of Cooling System Fan Applied to Industry 4.0 Data Center". Electronics 8, nr 5 (25.05.2019): 582. http://dx.doi.org/10.3390/electronics8050582.
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This paper proposes a control method to improve the energy efficiency and performance of cooling fans used for cooling. In Industry 4.0, a large number of digital data are used, and a large number of data centers are created to handle these data. These data centers consist of information technology (IT) equipment, power systems, and cooling systems. The cooling system is essential to prevent failure and malfunction of the IT equipment, which consumes a considerable amount of energy. This paper proposes a method to reduce the energy used in such cooling systems and to improve the temperature control performance. This paper proposes an fuzzy proportional integral(FPI) controller that controls the input value of the proportional integral(PI) controller by the fuzzy controller according to the operation state, a VFPI (Variable Fuzzy Proportional Integral) controller that adjusts the gain value of the fuzzy controller, and a variable fuzzy proportion integration-variable limit (VFPI-VL) controller that adjusts the limit value of the fuzzy controller’s output value. These controllers control the fan applied to the cooling system and compare the energy consumed and temperature control performance. When the PI controller consumes 100% of the power consumed, the FPI is 50.5%, the VFPI controller is 44.3%, and the VFPI-VL is 32.6%. The power consumption is greatly reduced. In addition, the VFPI-VL controller is the lowest in temperature variation, which improves the energy efficiency and performance of the cooling system using a fan. The methods presented in this paper can not only be applied to fans for cooling, but also to variable speed systems for various purposes and improvement of performance and efficiency can be expected.
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Wen, Jian-Ping. "Fractional Order Nonlinear Feedback Controller Design for PMSM Drives". Mathematical Problems in Engineering 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/290310.
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Fractional order integral is introduced into active disturbance rejection controller (ADRC) to establish the structure of fractional order proportional integral controller (FPI). Fractional order ADRC (FADRC) is designed by replacing the nonlinear state error feedback control law using nonlinear function combination in ADRC with FPI, which can combine the high performance of ADRC estimating disturbances with the characteristics of fractional order calculus more really describing the physical object and spreading the stable region of the system parameters. The proposed FADRC is applied to permanent magnet synchronous motor (PMSM) speed servo system in order to improve robustness of system against the disturbances. Compared with ADRC, simulation results verify that the proposed control method has given very good robust results and fast speed tracking performance.
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Elshenawy, Mahmoud, Ashraf Fahmy, Adel Elsamahy, Shaimaa A. Kandil i Helmy M. El Zoghby. "Optimal Power Management of Interconnected Microgrids Using Virtual Inertia Control Technique". Energies 15, nr 19 (24.09.2022): 7026. http://dx.doi.org/10.3390/en15197026.
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Two interconnected AC microgrids are proposed based on three renewable energy sources (RESs): wind, solar, and biogas. The wind turbine drives a permanent magnet synchronous generator (PMSG). A solar photovoltaic system (SPVS) with an appropriate inverter was incorporated. The biogas genset (BG) consists of a biogas engine coupled with a synchronous generator. Two interconnected AC microgrids, M1 and M2, were considered for study in this work. The microgrid M2 is connected to a diesel engine (DE) characterized by a continuous power supply. The distribution power loss of the interconnected AC microgrids comprises in line loss. The M1 and M2 losses are modeled as an objective function (OF). The power quality enhancement of the interconnected microgrids will be achieved by minimizing this OF. This research also created a unique frequency control method called virtual inertia control (VIC), which stabilizes the microgrid frequency using an optimal controller. In this paper, the following five controllers are studied: a proportional integral controller (PI), a fractional order PI controller (FOPI), a fuzzy PI controller (FPI), a fuzzy fractional order PI controller (FFOPI), and a VIC based on FFOPI controller. The five controllers were tuned using particle swarm optimization (PSO) to minimize the (OF). The main contribution of this paper is the comprehensive study of the performance of interconnected AC microgrids under step load disturbances, step changes in wind/solar input power, and eventually grid following/forming contingencies as well as the virtual inertia control of renewable energy resources used in the structure of the microgrids.
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Yan, Qixiang, Ibrahim Adamu Tasiu, Hong Chen, Yuting Zhang, Siqi Wu i Zhigang Liu. "Design and Hardware-in-the-Loop Implementation of Fuzzy-Based Proportional-Integral Control for the Traction Line-Side Converter of a High-Speed Train". Energies 12, nr 21 (26.10.2019): 4094. http://dx.doi.org/10.3390/en12214094.
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Power quality is one of many issues affecting the traction power supply system. Prominent among the causes of poor power quality is voltage low-frequency oscillation (VLFO). In this paper, a fuzzy-based PI (FPI) controller to optimize the performance of the traction line-side converter (TLSC) and suppress the effect of VLFO is proposed. Firstly, the mathematical model of China’s railway high-speed five single-phase TLSC is developed, and then the FPI control unit is designed based on specific requirements. The fuzzy antecedent and consequence rules were generated based on the expert and previous knowledge of TLSC operation. An offline simulation of the proposed control scheme under different loads and parameters is conducted to verify the designed. To validate the model, the traction power supply system (TPS) is built on the field-programmable gate array (FPGA) real-time digital simulator (FPGA-RTDS), while the FPI control algorithm is load on modeling tech rapid control prototyping (RCP) real-time digital controller (RTDC). Hardware-in-the-loop (HIL), and offline simulation studies between current decoupling (PI) control, sliding mode control (SMC), and the proposed control method confirms in addition to excellent dynamic performance; the proposed method can successfully suppress the effect of VLFO.
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Omar, Abeer, Dalia Yousri, Hazem A. Attia i Dalia Allam. "A new optimal control methodology for improving MPPT based on FOINC integrated with FPI controller using AHA". Electric Power Systems Research 224 (listopad 2023): 109742. http://dx.doi.org/10.1016/j.epsr.2023.109742.
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Rabbani, Moazzam Ali, Muhammad Bilal Qureshi, Salman A. Al Qahtani, Muhammad Mohsin Khan i Pranavkumar Pathak. "Enhancing MPPT Performance in Partially Shaded PV Systems under Sensor Malfunctioning with Fuzzy Control". Energies 16, nr 12 (12.06.2023): 4665. http://dx.doi.org/10.3390/en16124665.
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The shift towards sustainable energy sources is gaining momentum due to their environmental cleanliness, abundant availability, and eco-friendly characteristics. Solar energy, specifically harnessed through photovoltaic (PV) systems, emerges as a clean, abundant, and environmentally friendly alternative. However, the efficacy of PV systems is subjective depending on two critical factors: irradiance and temperature. To optimize power output, maximum power point tracking (MPPT) strategies are essential, allowing operation at the system’s optimal point. In the presence of partial shading, the power–voltage curve exhibits multiple peaks, yet only one global maximum power point (GMPP) can be identified. Existing algorithms for GMPP tracking often encounter challenges, including overshooting during transient periods and chattering during steady states. This study proposes the utilization of fuzzy sliding mode controllers (FSMC) and fuzzy proportional-integral (FPI) control to enhance global MPPT reference tracking under partial shading conditions. Additionally, the system’s performance is evaluated considering potential sensor malfunctions. The proposed techniques ensure precise tracking of the reference voltage and maximum power in partial shading scenarios, facilitating rapid convergence, improved system stability during transitions, and reduced chattering during steady states. The usefulness of the proposed scheme is confirmed through the use of performance indices. FSMC has the lowest integral absolute error (IAE) of 946.94, followed closely by FPI (947.21), in comparison to the sliding mode controller (SMC) (1241.6) and perturb and observe (P&O) (2433.1). Similarly, in integral time absolute error (ITAE), FSMC (56.84) and FPI (57.06) excel over SMC (91.03) and P&O (635.50).
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Nayak, Smrutiranjan, Sanjeeb Kumar Kar i Subhransu Sekhar Dash. "Combined fuzzy PID regulator for frequency regulation of smart grid and conventional power systems". Indonesian Journal of Electrical Engineering and Computer Science 24, nr 1 (1.10.2021): 12. http://dx.doi.org/10.11591/ijeecs.v24.i1.pp12-21.
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In continually increasing area and structure of modern power system having burden demand uncertainties, the use of knowledgeable and vigorous frequency power strategy is essential for the satisfactory functioning of the Power system. A combined fuzzy proportional-integral-derivative (CFPID) controller is suggested for frequency supervision of the power system. To optimize the controller parameters, a review of sine and cosine work adjusted improved whale optimization algorithm (SCiWOA) has been utilized. The next practical application of power-system frequency control is performed by designing a CFPID controller using the proposed SCiWOA technique for a smart grid system having inexhaustible sources like sun oriented, wind, photovoltaic and capacity gadgets like a battery, flywheel just as module electric vehicles. The first advantages of the SCiWOA tuned CFPID controller over hybrid-particle-swarm-optimization and pattern-search (hPSO-PS) adjusted fuzzy proportional-integral (FPI) controller, hybrid bacterial foraging optimization algorithm-particle swarm optimization (hBFOA-PSO) adjusted proportional-integral (PI) controller, genetic algorithm (GA) tuned proportional and integral (PI) controller, BFOA adjusted PI controller, jaya algoritm (JA) tuned PID with derivative filter (PIDN) controller and teaching learning based optimization (TLBO) tuned proportional-integral-derivative (PID) controller are demonstrated for the two-area non-reheat thermal power system. The second advantages of the SCiWOA tuned CFPID controller over artificial-bee-colony (ABC) tuned PID controller, SOSA tuned PID controller and Firefly algorithm (FA) tuned PID controller are demonstrated for two-area reheat thermal power system. It is seen that SCiWOA based CFPID controller is more effective in controlling the recurrence comparative with PID regulator.
Rozprawy doktorskie na temat "FPI CONTROLLER"
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Chen, Fei [Verfasser]. "Light-controlled bacteria-surface and bacteria-bacteria adhesions / Fei Chen". Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2020. http://d-nb.info/1224895649/34.
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Boris, Jakovljević. "Optimalno i suboptimalno podešavanje parametara robusnih linearnih regulatora necelog reda". Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94916&source=NDLTD&language=en.
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Rad je posvećen robusnom upravljanju sistemima čiji je linearni regulator i/ili dinamika necelog reda, kao i upravljačkim problemima gde regulator necelog reda u sebi poseduje i linearnu i nelinearnu dinamiku, a koji upravlja procesima čija dinamika može i linearna i nelinearna.The thesys is dedicated to robust control systems problems with linearcontrollers and/or process dynamics of noninteger order, as well as controlissues with combination of linear and nonlinear controllers of nonintegerorder that control either linear or nonlinear systems.
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Juan, Cathy. "Des univers de croyance : l'implication ou la recherche d'un modèle invariant". Paris 8, 2000. http://www.theses.fr/2000PA081819.
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Ce travail contribue a l'elaboration d'un cadre epistemologique precis dans lequel pouvoir inscrire les phenomenes de croyance. Se demarquant d'abord, dans une premiere partie, de la problematique qui a trop longtemps retenu les sciences sociales autour de la notion d'irrationalite, il est apparu primordial de considerer la croyance en termes de processus. On connait, a ce propos, le role indispensable de la regulation sociale en tant que mecanisme psychosocial qui intervient dans le contexte de l'orthodoxie religieuse (deconchy, 1980). Dans un premier temps, nous avons consacre une large partie de la recherche au suivi du fonctionnement de la communaute des temoins de jehovah. Nous avons procede a l'examen detaille de contenus de croyance fortement regules par le groupe d'appartenance religieux. Correlativement, nous avons aborde dans un deuxieme temps, un ensemble plus heterogene d'objets de croyance non soutenus par une regulation sociale orthodoxe. Plus connues sous l'appellation de croyances paralleles (l'astrologie, la voyance, le facteur psi, la reincarnation, les ovni, l'experience de mort imminente, les medecines paralleles, etc. ), nous avons cherche a mettre en evidence les processus susceptibles de se trouver a l'origine de la recevabilite de ces contenus aupres d'une population d'etudiants en deug. Les resultats de deux etudes experimentales signalent que l'implication etablie sous la forme de trois dimensions socio-cognitives, l'identification personnelle, la valorisation et la capacite percue d'action (rouquette, 1997, 1998), peut etre consideree comme un processus generant l'acceptation de ces croyances heterodoxes.
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Nepomuceno, Leonardo. "Modelos de otimização equivalente para minimização de perdas atraves de FPO Newton". [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260629.
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Orientador: Anesio dos Santos JuniorTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
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Resumo: Os estudos de otimização "on-line" realizados nos centros de controle têm apresentado algumas deficiências, apontadas na literatura, que têm limitado suas aplicações práticas na operação dos sistemas de potência. O presente trabalho enfoca uma destas deficiências, qual seja, a representação das áreas externas (modelos de equivalentes externos) durante estudos com ferramentas de otimização reativa através de um Fluxo de Carga Ótimo tipo Newton. Tradicionalmente, os modelos de equivalentes externos e as ferramentas de otimização foram desenvolvidos separadamente. Este trabalho enfoca o uso de ferramentas de otimização reativa acopladas a modelos de representação de áreas não observáveis, propondo e discutindo conceitos envolvidos. Para isso, inicialmente alguns modelos equivalentes clássicos, utilizados nos estudos de Análise de Segurança Estática, são reavaliados no contexto dos estudos de otimização. Para a avaliação dos modelos equivalentes em estudos de otimização é proposta uma Metodologia de Análise. Dadas as deficiências apresentadas pelos modelos clássicos, é proposto um enfoque de otimização para modelos equivalentes de representação das áreas externas. Os modelos são formulados como problemas de otimização com as áreas externas representadas de forma explícita (sem redução). A representação das áreas externas é feita conjuntamente com o modelo da otimização da parte interna do sistema através de um problema denominado Fluxo de Carga Ótimo Equivalente (FCOE) ...Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: On-line optimization studies performed on control centers present some deficiencies, pointed-out in literature, limiting the scope of their practical aplications in power system operation. This work focuses on one of such deficiencies: the representation of external are as (external equivalent models) during studies with reactive optimization tools such as a Newton Optimal Power Flow. External equivalent models and optimization tools have been traditionaly developed separately. This work focuses on the use of reactive optimization tools coupled to models representing external non-observable areas, proposing and discussing related concepts. For such a purpose, some classical equivalent models are evaluated in the context of optimization studies. An Analysis Methodology is proposed to evaluate equivalent models in optimization studies. Given the deficiencies presented by classical models, an optimization approach to equivalent models is proposed. The models are formulated as optimization problems having the external area represented explicitly (with no reduction). The representation of such external models is obtained simultaneously with internal optimization solution, through a problem named Equivalent Optimal Power Flow (FCOE). Hybrid models, sinthetyzing the Extended Ward models and the FCOE tool in an unifying approach are analised. Three alternative ways of coupling (boundary matching) Hybrid models to the internal system are proposed ...Note: The complete abstract is available with the full electronic digital thesis or dissertations
Doutorado
Doutor em Engenharia Elétrica
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Rey, Daniel Del. "Análise do comportamento no Brasil: o que foi pesquisado até 2005 em relação aos comportamentos matemáticos". Pontifícia Universidade Católica de São Paulo, 2009. https://tede2.pucsp.br/handle/handle/16859.
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Previous issue date: 2009-05-29This study investigated mathematical behavior presented on thesis and dissertations produced by Brazilian behavior analysts until the year of 2005. In the first place studies in the area were found by interviewing some researchers on this area. These studies generated a list of references as well as their authors Curriculum Lattes. There were selected five doctorate dissertations and twenty four master s thesis from those references. This research aimed at analyzing a part of the history of Brazilian Behavior Analysis, related to the area of mathematical behaviors. The selected documents were classified by: a) distribution throughout the years; b) relation to each other c) institutions they were developed; c) researchers and their relation to each other; d) characteristics of the participants (age, schooling, type of development); e) basic or applied research; f) experimental designs; g) settings; h) funding; i) mathematics items studied; j) behavior analysis theoretical concepts embraced; k) adjustment to National Curriculum Parameters`s propositions; l) main references. The main results of this research are: the number of studies in this area is increasing at an accelerated rate after 1995; many institutions are participating in this process and there is already a network of researchers; the participants of the studies are of varied ages and most of them have typical development; the majority of the studies are basic researches and they carried out single case designs and stimulus equivalence procedures. Paulo S.T. do Prado is the Brazilian author most referred among the analyzed references and Murray Sidman is the most referred author among the international references. The behaviors analyzed by these studies were limited to the objectives proposed to children s education
O objetivo da presente pesquisa foi analisar um aspecto da história da análise do comportamento no Brasil, estudando o que foi pesquisado em relação aos comportamentos matemáticos. Examinaram-se teses e dissertações que tratavam do tema, produzidas por analistas do comportamento no Brasil, até 2005. Pesquisadores da área indicaram trabalhos já produzidos e uma base de dados foi consultada para ampliar as referências na área. Também foi realizada uma busca nas referências bibliográficas destes trabalhos e no Currículo Lattes dos diversos autores. Dentre os trabalhos localizados, foram selecionados cinco teses de doutorado e vinte e quatro dissertações de mestrado. Para isto investigou-se: a) distribuição desses trabalhos ao longo dos anos; b) distribuição desses trabalhos por diferentes instituições; c) principais pesquisadores da área e como eles se relacionam, d) perfil dos participantes dessas pesquisas (idade, escolaridade, tipo de desenvolvimento); e) se era pesquisa básica ou aplicada; f) delineamento das pesquisas; g) setting aonde o trabalho foi realizado; h) financiamento que esses trabalhos tiveram; i) áreas da matemática estudadas; j) conceitos da Análise do Comportamento empregados na discussão teórica das diferentes áreas estudadas; k) como esses trabalhos se encaixam na proposta dos Parâmetros Curriculares Nacionais e l) quais são as principais referências bibliográficas para a área. Como principais resultados têm-se que trabalhos nessa área no Brasil têm crescido em número de forma acelerada após 1995, diversas instituições têm participado desse processo e já há uma rede de pesquisadores envolvidos. Os participantes têm idade variada, a maioria com desenvolvimento típico e grande maioria dos trabalhos é básico, com maior incidência de delineamento de sujeito único. Os comportamentos matemáticos mais estudados foram conceito de número e ordenação e o conceito da Análise do Comportamento mais empregado foi equivalência de estímulos. Dentre as referências bibliográficas analisadas, Paulo S.T. do Prado é o autor mais referido e dentre as referências internacionais Murray Sidman foi o autor mais referido. Os comportamentos analisados nesses trabalhos se limitam a objetivos propostos à educação infantil
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Diaz, Nava Mario. "Proposition d'une méthodologie de conception de circuits intégrés de communication : réalisation d'un communicateur pour le réseau local FIP". Phd thesis, Grenoble INPG, 1986. http://tel.archives-ouvertes.fr/tel-00320454.
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FIP=Factory Instrumentation Protocol. On réalise un circuit intégré de communication pour le réseau FIP, projet national de communication entre automates réflexes, capteurs et actionneurs. Le circuit intégré est spécifié pour permettre soit la connexion de capteurs simples, soit la connexion de capteurs intelligents ou des automates de réseau. La conception de ce circuit intégré «à la demande» résulte d'une méthodologie originale. Cette méthodologie est orientée vers la conception de circuits VLSI de communication à partir d'une bibliothèque d'opérateurs flexibles, d'une part pour réduire le temps de conception, d'autre part pour donner la possibilité aux ingénieurs non spécialistes en conception de concevoir eux-mêmes leur circuit
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Carli, Pierre. "Prix de transfert et évasion de capitaux : aspects douaniers et cambiaires de la surfacturation des marchandises importées". Paris 12, 1989. http://www.theses.fr/1989PA122002.
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Non seulement les grandes multinationales mais encore tous les residents francais peuvent se voir accuser d'avoir paye un prix "surfait" dans leurs transactions internationales: - si la reglementation de la valeur en donne reprime generalement les minorations de valeurs dans le cadre d'un tarif ad valorem, des preoccupations statistiques, voire tarifaires, peuvant cependant justifier une repression de la survaluation, concurremment avec la reglementation cambiaire (cette question fait actuellement l'objet de debats au conseil de cooperation douaniere); - en ce qui concerne le controle des changes, la repression de la surfacturation par la legislation francaise doit respecter les conventions internationales (g. A. T. T. , f. M. I. ), ainsi que les regles de la communaute economique europeenneNot only big multinationals companies but also all residents doing business in france may be prosecuted of paying a surchage on the invoices of international dealings: - if the customs valuation law generally prosecutes the undervalued declarations to apply an ad valorem tariff, nevertheleless statistic - and even customs - purposes can justify a prosecution of over valuation, jointly with the exchange control (customs cooperation council is still studying this problem); - about the exchange contol, the penalty for overestimating set by the french law must be assessed in conformity with international agreements (g. A. T. T. , i. M. F. ) and the rules of the european economic communauty
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ARYA, YOGENDRA. "SOME STUDIES ON AUTOMATIC GENERATION CONTROL OF MULTI-AREA INTERCONNECTED RESTRUCTURED POWER SYSTEMS". Thesis, 2017. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16145.
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The prime objective of automatic generation control (AGC) is to adjust the active
power generation in response to variable power demands and hence to maintain
scheduled system frequency and scheduled tie-line power flows with neighboring
control areas at desired tolerance values. A sizeable fall in frequency might badly
affect the timing of electric clocks, magnetizing currents in transformers/induction
motors, constant speed of AC motors, continuous operation of processes and
synchronous operation of various units in power system. Additionally, power system
may face a serious instability problem at substantial drop in the frequency. In steady
state, automatically these variations must be zero. Enhanced power system stability is
achieved with the proper design of supplementary controller adopted in an AGC
system. However, continuous growth in size and complexity, stochastically changing
power demands, system modeling errors, alterations in electric power system
structures and variations in the system parameters over the time has turned AGC task
into a challenging one. Consequently, conventional control strategies may be
incompetent to handle such unpredictable variations in an AGC system. Hence, the
researchers over the world are trying to propose several novel control strategies that
fuse knowledge, techniques and methodologies from varied sources to tackle AGC
problem of power system effectively. The literature survey indicates that several
researchers, to tackle AGC issue in restructured system, have presented various types
of controllers optimized using various conventional and intelligent soft computing
techniques. The literature survey also unveils that the performance of AGC system
depends chiefly on the sort of intelligent technique exploited and structure of the
controller. Hence, the goal of the present study is to propose different types of new
vi
supplementary controller structures for various types of restructured as well as
traditional power systems.
The presented work is divided into ten chapters. Chapter 1 deals with the
introduction of AGC topic in deregulated environment. Chapter 2 presents a critical
review of AGC schemes in restructured power system. Chapter 3 stresses on the
modeling of traditional and restructured power systems under the study. The main
simulation work starts from Chapter 4.
In Chapter 4, the study is firstly conducted on a proposed restructured two-area
multi-source hydrothermal and hydrothermal gas power systems interconnected via
AC and AC/DC parallel tie-lines. Modern optimal control theory based optimal PI
structured controllers are designed with full state vector feedback control strategy
employing performance index minimization criterion. From the results obtained in the
study, it is substantiated that the use of AC/DC parallel links as an area
interconnection shows enrichment in the dynamic performance of the system in terms
of less oscillations, settling time and peak overshoots/undershoots in the deviation in
frequency and tie-line power responses. Eigenvalue study confirmed the positive
effect of AC/DC parallel links on the system dynamic performance and stability. It is
also observed that the multi-source hydrothermal system shows inferior performance
in comparison to the single-source thermal system due the presence of hydro source in
each area of the multi-source hydrothermal system due to the non-minimum phase
characteristics of hydro turbines.
The full state feedback optimal PI controllers work well and are very much robust
but in realistic environments, the measurement of all states is not feasible all the time.
Hence, next, in Chapter 5, some modern methods are adopted to conduct the study. In
first attempt, a modified fuzzy PI (FPI) controller optimized using genetic algorithm
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(GA) is proposed for different electric power system models such as traditional two
area non-reheat thermal, reheat thermal, multi-source hydrothermal and restructured
two-area reheat thermal systems. In traditional two-area multi-source hydrothermal
system, each control area owns two generating units, one non-reheat thermal and one
mechanical governor based hydro power plant. However, in restructured two-area
single-source system, each control area owns two single reheat thermal generating
units. Firstly, a FPI-1 controller is designed with nominal range of membership
functions (mfs) and GA tuned output scaling factors. Secondly, to test the impact of
alteration in horizontal range of mfs of FPI-1, it is further optimized to get FPI-2
controller. The results of FPI-1 and 2 controllers are compared and the results due to
later controller are found to be superior. Yet, FPI controllers are designed only for a
traditional two-area non-reheat thermal system; they are successfully applied on other
system under studies. The performance of FPI controllers is found significantly
superior in terms of lesser numerical values of settling times (STs), peak undershoots
(PUs) and various performance indices (PIs) compared to conventional controllers
based on optimal, GA, gravitational search algorithm (GSA), bacterial foraging
optimization algorithm (BFOA), hybrid BFOA-particle swarm optimization (hBFOA
PSO) and hybrid firefly algorithm-pattern search (hFA-PS) techniques.
Next, in Chapter 6, BFOA optimized fuzzy PI (FPI) and fuzzy PID (FPID)
controllers are proposed for traditional two-area non-reheat thermal, reheat thermal,
multi-source hydrothermal and restructured multi-source hydrothermal power
systems. BFOA is used to simultaneously tune the input and output scaling factors of
FPI/FPID controller keeping mfs and fuzzy rules invariant. It is observed that FPI
controller shows superior results in terms of lesser values of STs/PUs/PIs compared to
PI controller based on recently reported techniques like GA/PSO/BFOA/hBFOA
viii
PSO/hFA-PS/FA/artificial bee colony (ABC) and FPI controller tuned using PS/PSO
algorithms for the same system design.
Further, a fractional order PID (FOPID) structured controller is suggested for AGC
problem solution of power systems in Chapter 7. The parameters of FOPID controller
are optimized exploiting BFOA. At first, a traditional two-area multi-source
hydrothermal system is considered and the advantage of FOPID is established over
PI/PID controller optimized using hFA-PS and PID controller optimized using grey
wolf optimization (GWO) techniques. To show the effectiveness of the method, the
approach is further extended to restructured two-area multi-source hydrothermal and
thermal gas systems. The analysis of the simulation results discloses the efficacy of
FOPID controller over BFOA/differential evolution (DE)/GA optimized PID
controller. Then, the study is extended to a restructured three-area multi-source
hydrothermal power system.
In the next step of the study, a maiden attempt is made to propose a fractional
order fuzzy PID (FOFPID) controller for traditional two-area multi-source
hydrothermal, restructured two-area multi-source hydrothermal, restructured two-area
multi-source thermal gas and restructured three-area multi-source hydrothermal AGC
systems in Chapter 8. The parameters of FOFPID controller are also tuned utilizing
BFOA. The critical analysis of the obtained results revealed the worth of FOFPID
controller over FOPID controller in terms of less numerical value of STs, PUs and
PIs. It is also experienced that FOFPID controller satisfies the AGC requirements in
different power transactions taking place under deregulated environment more
fruitfully than FOPID controller.
In Chapter 9, FOFPID controller is implemented in AGC of restructured three
area multi-source hydrothermal system considering appropriate generation rate
ix
constraint (GRC), deadzone (DZ), boiler dynamics (BD) and time delay (TD).
However, controller is optimized for linear system it works robustly in the presence of
GRC/DZ/BD/TD physical constraints; though in the presence of GRC/DZ/BD/TD the
system performance degraded drastically in comparison to the linear or the system
with GRC only. Further, investigations clearly reveal that the controller is found to
perform well when the system is subjected to higher degree of uncontracted load
demands and simultaneous occurrence of uncontracted load demands. Thus, controller
parameters obtained for the linear system are robust enough and need not be retuned
for the system having appropriate GRC or GRC/DZ/BD/TD or wide changes in the
size and location of contract violations. Thus, BFOA tuned FOFPID controller and
other controllers proposed in the previous chapters may be options to supply reliable
power with quality to the consumers.
Finally, Chapter 10 presents an overview of the contributions made in the current
thesis. Few suggestions are also given to extend the research in the future.
9
DEVRA, SANGEETA. "IMPLEMENTATION OF PID AND FPD+I CONTROLLER ON NON-LINEAR SYSTEMS". Thesis, 2013. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16127.
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Since Fuzzy controllers are nonlinear, it is more difficult to set the controller gains compared to Proportional-Integral-Derivative (PID) controller. The idea is to start with a tuned conventional PID controller, replace it with an equivalent fuzzy controller. In contrast, a PID controller is a simple, linear combination of three signals: P action proportional to error, the I-action proportional to the integral of the error and the D-action proportional to the time derivative of error. This introduces a systematic tuning procedure for fuzzy PID type controllers and study of higher order systems based on Fuzzy controller This comprises of level control of a surge tank level system and inverted pendulum’s angular position as well as cart position using fuzzy PD+I controller with effect of different membership function on the system control as well as comparison with conventional PID Controller has been carved out. Different type of membership functions like Bell, Pi, Gaussian and Psigmoid are used in the fuzzy PD+I control of the system. The stability of the system has also been discussed upon using phase plot. The simulation results have been obtained using MATLAB.
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CHANG, TING-WEI, i 張庭瑋. "Implementing FPV Glasses with IMU Controlled UAV to Achieve First Person Visual Experience". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/46723397545093257812.
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碩士國立暨南國際大學
資訊工程學系
104
Nowadays, whether adults or children have many ways to kill time. The remote controlled transport is one major way to entertainment. There are remote control cars, remote control boat, remote control aircraft, and so on. These devices are mostly using 2.4G radio frequency transmission system. In recent years, multi-rotor aircraft is getting the most study and unmanned aerial vehicle (UAV) is the focal point of the research. Popular use of UAV is people can feel the mystery of nature directly through enjoying different points of view from a height by mounted camera. Furthermore, UAVs are often preferred for mission that is dull, dirty or dangerous for humans, such as surveillance, agriculture, search and rescue. However, the most people may have heard of but very unfamiliar. Due to the drone operation is complicated, it's hard to get started. Therefore, this paper will solve the difficulty of learning drone operation so that people can easily and quickly get started. In addition, it is applicable to any device which remote control by 2.4G radio frequency transmission system. The basic principle is using the mobile phones inertial measurement unit (IMU) sensor or the remote controller which developed by ourselves to control the direction and altitude of drone. Furthermore, we have added the head tracking function, which allows users to experience the first person view (FPV) with drone camera which synchronizes to the popular visual reality (VR) headsets. Along with imported 3D imaging technology, solving distance perception problems and bringing out the immersive effect to users. Aside from that, we’ve also created a website with real-time streaming of the drone, as well as a long range remote with buttons which can control the drone, so that people can enjoy the beauty abroad even if not abroad.
Książki na temat "FPI CONTROLLER"
1
Controle da natalidade, imperialismo e o FMI. Petrópolis: Vozes, 1985.
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International Pharmaceutical Technology Symposium (5th 1990 Ankara, Turkey). New approaches to controlled drug delivery: Minutes of the Fifth International Technology Symposium, Hacettepe University, Ankara, 10 to 13 September 1990 : satellite symposium of the 50th Congress of the FIP. Redaktorzy Hıncal A. Atilla, Kaş H. Süheyla, Şumnu Murat, Hacettepe Üniversitesi i International Congress of Pharmaceutical Sciences of F.I.P. Paris: Editions de Santé, 1990.
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International Symposium on the Forensic Aspects of Controlled Substance (1988 Forensic Science Research and Training Center, FBI Academy). Proceedings of the International Symposium on the Forensic Aspects of Controlled Substances: March 28-April 1, 1988, Forensic Science Research and Training Center, FBI Academy, Quantico, Virginia. Washington, DC: Laboratory Division, Federal Bureau of Investigation, U.S. Dept. of Justice, 1988.
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Simon, Morris. 10 Financial Promotions—Regulating Marketing Material. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780199688753.003.0010.
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This chapter considers the regulation of financial promotions. The promotion of marketing material for financial products and services regulated under the Financial Services and Markets Act (FSMA) 2000 is restricted. Section 21 FSMA dictates that only authorised persons may issue marketing material, unless an authorised person has approved the material and accepted responsibility for its contents, or the material falls within an exclusion prescribed by the Financial Promotions Order (FPO). This chapter explains the elements of the restriction: the meaning of terms such as ‘communicate’, ‘invitation’, ‘inducement’, ‘controlled investments’, and ‘controlled activities’. The offence of contravening the restriction, and its consequences, are reviewed. The exclusions from the restriction contained in the FPO are considered. The Financial Conduct Authority’s rules and policy on financial promotions (contained in COBS 4) are also explained.
5
Metodologia para avaliar as estratégias nacionais para a prevenção e controle das arboviroses nas Américas. Pan American Health Organization, 2022. http://dx.doi.org/10.37774/9789275724415.
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A Estratégia de gestão integrada para a prevenção e controle da dengue na Região das Américas (EGI-dengue) foi elaborada em 2003 pelos países da Região das Américas e pela Organização Pan-Americana da Saúde (OPAS). Essa estratégia foi ampliada em 2016 para englobar outras arboviroses (Chikungunya e Zika), passando a ser a Estratégia de gestão integrada para a prevenção e controle das arboviroses nas Américas nas Américas (EGI-Arbovírus). A EGI-Arbovírus é hoje uma sólida ferramenta de trabalho para responder às situações causadas por essas doenças. A sustentabilidade é um dos pontos fortes da EGI-Arbovírus, em parte devido aos processos de monitoramento e avaliação realizados pelos países da Região e pela OPAS. Até a data de publicação desta metodologia, 34 processos de avaliações externas haviam sido realizados nos Estados Membros da Região, sendo conduzidas duas ou mais avaliações em alguns deles. Aqui são reunidas a experiência e as evidências resultantes destes processos para oferecer uma metodologia clara e simples para que as equipes responsáveis pela implementação da EGI-Arbovírus nacional em cada país e do Programa Regional de Arboviroses da OPAS possam realizar, de modo harmonioso, o acompanhamento e a avaliação destas estratégias. O intuito é que os processos de avaliação da EGI-Arbovírus nacional contribuam para aprimorar a cooperação técnica e reforçar a capacidade de resposta em prevenção e controle das arboviroses nos países e territórios das Américas.
6
Noronha, Viviane de Lima, Rosana da Paz Ferreira, Carlos Eduardo de Souza Rodrigues i Tainara Miranda Campos. Modelagem matemática do controle biológicoda mosca-das-frutas por parasitoide na fruticultura brasileira. Brazil Publishing, 2020. http://dx.doi.org/10.31012/978-65-87836-20-1.
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O presente trabalho apresenta a modelagem matemática do controle biológico da mosca-das-frutas Ceratitis capitata pelo parasitoide Diachasmimorpha longicaudata. Para tanto, foi elaborado um modelo baseado em Lotka-Volterra, onde as informações ecológicas e biológicas sobre as espécies, informações essas provenientes da fruticultura nacional, foram utilizadas na modelagem. A modelagem matemática é exibida em três capítulos desenvolvidos pelas autoras. Já o quarto e quinto capítulos tiveram a participação dos co-autores Carlos Eduardo e Tainara, que na época eram discentes do curso de computação da UEZO (Fundação Centro Universitário Estadual da Zona Oeste), e bolsistas de iniciação científica pelo PIBIT/CNPq (Programa Institucional de Bolsas de Iniciação em Desenvolvimento Tecnológico e Inovação/Conselho Nacional de Desenvolvimento Científico e Tecnológico), e pelo PROVIC/UEZO (Programa Voluntário de Iniciação Científica), respectivamente. Ambas as pesquisas se propuseram a dar continuidade a este trabalho.
7
Proceedings of the International Symposium on the Forensic Aspects of Controlled Substances: March 28-April 1, 1988, Forensic Science Research and Training Center, FBI Academy, Quantico, Virginia. For sale by the U.S. Dept. of Commerce, National Technical Information Service, 1989.
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Maricato, Glaucia. História sem fim. ABA Publicações, 2022. http://dx.doi.org/10.48006/978-65-87289-19-9.
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História sem fim examina vitórias e percalços envolvidos na busca pelo controle da hanseníase (outrora conhecida como lepra). A partir da análise de materiais documentais, artigos científicos, e de mais de cinco anos de pesquisa etnográfica em ex-colônias hospitalares, em eventos nacionais e internacionais, em reuniões e entrevistas com ativistas, pesquisadores(as), profissionais de saúde e pacientes, a autora nos leva a explorar questões do passado e do presente referentes às políticas de controle dessa doença infecciosa. Mais do que isso, ela demonstra o caráter multitemporal dessas medidas, destacando como elas englobam aquilo que chamou de uma história bacilo-centrada. Nesta obra, somos convidadas(os) a acompanhar o exame de incertezas científicas e de categorizações do conhecimento, além de refletir sobre os instrumentos de medição que moldaram as campanhas de eliminação dessa doença como problema de saúde pública das últimas décadas. Este não é um livro sobre a história da hanseníase, mas se trata de uma obra que explora o enredamento entre materialidades, medidas, tecnologias, conhecimentos e categorizações que, juntos, performam aquilo que foi chamado de “mundo sem hanseníase”.
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Lourenço, Emerson Botelho, red. Avanços científicos em medicina 2. Bookerfield Editora, 2021. http://dx.doi.org/10.53268/bkf21120200.
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Este livro reúne trabalhos científicos relevantes em Ciências Médicas. Decidiu-se pela divisão em três seções: i) área pré-clínica; ii) psiquiatria e neurologia; iii) infectologia. Considerando a ampla aplicação de cimentos ortopédicos e dentários para os mais diversos fins no âmbito das ciências da saúde, os capítulos um e dois se complementam e trazem importante contribuição científica avaliando o cimento PBS®CIMMO no preenchimento de falhas ósseas aplicadas às intervenções bucais. O microRNA-26a é um modulador endógeno do fator de crescimento dos hepatócitos, de papel relevante no reparo tecidual. O papel do miR26a no processo de reparo renal foi avaliado em ratos submetidos a modelo de lesão renal aguda induzida e apresentado pelo capítulo três. O estudo sugere que miR26a pode ter um papel de controle de feedback negativo da tradução de HGF durante a fase de recuperação / proliferativa. Por meio do capítulo quatro foram demonstrados os efeitos cardioprotetores do carvacrol através da melhora da função cardíaca após a lesão de isquemia e reperfusão, redução da área de infarto cardíaco e redução da atividade de importantes enzimas antioxidantes após a lesão de isquemia e reperfusão cardíaca. O estudo contribui para a ciência farmacêutica produzir fármacos que possam ser utilizados no tratamento de pacientes com cardiopatia aguda visando a prevenção dos danos oxidativos decorrentes da lesão de reperfusão cardíaca. Iniciando a seção de Psiquiatria e Neurologia, por meio do capítulo cinco foi abordado o tema da dependência química de álcool enquanto problema de saúde pública e o alto índice de abandono de tratamento. Foram investigadas as características clínicas relacionadas à prontidão de alcoolistas para permanecer em tratamento. O capítulo demonstra a importância da identificação de fatores de modificação dos aspectos motivacionais na construção de projetos terapêuticos mais consentâneos às necessidades terapêuticas individuais. A associação entre epilepsia e transtornos psiquiátricos tem sido descrita desde o início da prática da Neurologia e da Psiquiatria. Comorbidades psiquiátricas têm impacto direto no prognóstico de pacientes epilépticos, influenciando o controle farmacológico e cirúrgico de crises, aumentando a mortalidade. Pelo capítulo seis é demonstrada a importância da identificação destas variáveis clínicas durante a avaliação diagnóstica dos pacientes com epilepsia. As imbricações entre o fenômeno epiléptico e os transtornos mentais aproximam Neurologia e Psiquiatria em torno mecanismos fisiopatológicos comuns a ambos. O fenômeno da Normalização Forçada foi descrito ao observar, em pacientes com epilepsia, o desaparecimento de descargas epiléticas no eletroencefalograma, concomitante com o desenvolvimento de sintomas psicóticos. Pelo capítulo sete é demonstrado que o desenvolvimento de novas técnicas de imagem permitiu uma série de evidências relacionando a ocorrência destas descargas epilépticas no sistema límbico e consequente coativação e desativação dessas “redes de estado de repouso”. No entanto, ainda há muitas controvérsias sobre os mecanismos básicos das alterações de redes relacionadas ao controle emocional, concluindo pela necessidade de uma metodologia de estudo mais homogênea para explicar esse interessante fenômeno neuropsiquiátrico com maior precisão. Iniciando a seção de Infectologia, por meio do capítulo oito foi tratado sobre o HIV/AIDS e o frequente comprometimento do desempenho das atividades diárias. Foi avaliada a capacidade de acesso lexical em idosos soropositivos em comparação com idosos com HIV/AIDS, concluindo o desempenho inferior destes últimos. O estudo reforça a importância de avaliar precocemente as funções cognitivas para manter a independência e a qualidade de vida do idoso com HIV/AIDS. Pelo capítulo nove são identificadas as alterações na atividade das enzimas hepáticas devido à infecção pelos vírus da hepatite B ou C. Foram aplicados metabonômicos baseados em espectroscopia de Ressonância Magnética Nuclear de hidrogênio concluindo-se pela capacidade de distinguir pacientes com e sem alterações da atividade sérica da AST e da ALT decorrentes da infecção crônica. Foi possível ainda indicar a classe de compostos associada à discriminação, mostrando assim mais uma aplicação potencial da estratégia metabonômica na prática clínica, permitindo uma análise mais profunda do processo de investigação da doença hepática desses pacientes.
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Roteiro para melhorar e garantir a boa ventilação de ambientes fechados no contexto da doença causada pelo novo coronavírus,COVID-19. Pan American Health Organization, 2021. http://dx.doi.org/10.37774/9789275723807.
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O risco de contrair COVID-19 é maior em ambientes com aglomerações e com ventilação inadequada, onde pessoas infectadas passam longos períodos juntas e muito próximas. Estes são os ambientes onde o vírus parece se disseminar com maior eficiência, por gotículas respiratórias ou aerossóis, tornando as precauções, portanto, ainda mais importantes. A compreensão e controle da ventilação das edificações pode melhorar a qualidade do ar que respiramos e reduzir o risco de problemas de saúde em ambientes fechados, inclusive melhorando a prevenção contra o vírus que causa a propagação da COVID-19 nesses ambientes. Este roteiro foi desenvolvido após uma revisão abrangente da literatura disponível e de uma avaliação dos documentos de orientação disponíveis das principais e mais renomadas autoridades internacionais em ventilação de edificações. As evidências e orientações disponíveis foram consultadas, reunidas e avaliadas quanto a quaisquer discrepâncias por especialistas internacionais membros do Painel Consultivo de Especialistas no Controle de Engenharia e Meio Ambiente (ECAP) da Organização Mundial da Saúde (OMS) para a COVID-19. O processo de desenvolvimento do roteiro incluiu duas sessões de consulta a especialistas por meio de reuniões virtuais e duas rodadas de apresentações por escrito, visando reunir contribuições técnicas e assegurar a construção de um consenso para a adaptação das recomendações. Esse processo considerou as metas de prevenção e controle de infecções (PCI), as implicações de recursos, valores e preferências, a ética e as lacunas de pesquisa no escopo do desenvolvimento do roteiro.
Części książek na temat "FPI CONTROLLER"
1
Satapathy, Priyambada, Jyoti Ranjan Padhi, Manoj Kumar Debnath, Pradeep Ku Mohanty i Sarita Samal. "Krill Herd Algorithm-Tuned IDN-FPI Controller for AGC in Interconnected Reheat Thermal–Wind Power System". W Lecture Notes in Networks and Systems, 525–37. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8218-9_43.
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Mhaskar, Prashant, Jinfeng Liu i Panagiotis D. Christofides. "Utilizing FDI Insights in Controller Design and PID Monitoring". W Fault-Tolerant Process Control, 125–77. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4808-1_7.
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Zhang, Youbin, i Youguo Pi. "Research on FOPI Controller for Current Loop of PMSM Servo System". W Lecture Notes in Electrical Engineering, 461–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34522-7_49.
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Patel, Nimai Charan, Manoj Kumar Debnath, Binod Kumar Sahu i Subhransu Sekhar Dash. "Automatic Generation Control Using Novel PD Plus FOPI Controller Tuned by Salp Swarm Algorithm". W Advances in Intelligent Systems and Computing, 1–13. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0199-9_1.
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Yadav, Shravan Kumar, i Krishna Bihari Yadav. "FOPI Controller with Chicken Swarm Optimization for Power Quality Improvement of HES System Integrated UPQC". W Computational Vision and Bio-Inspired Computing, 367–78. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-9819-5_28.
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Singh, Swati, Vijay Kumar Tayal, Hemender Pal Singh i Vinod Kumar Yadav. "Performance Analysis of Proton Exchange Membrane Fuel Cell (PEMFC) with PI and FOPI Controllers". W Lecture Notes in Electrical Engineering, 211–19. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1186-5_17.
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Mandal, Rajasi, i Kalyan Chatterjee. "Design and Optimization of a Robust Fractional-Order FOPI Controller for Frequency Control of a Microgrid". W Lecture Notes in Electrical Engineering, 353–64. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1978-6_31.
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Pfeifer, Denis, Andreas Baumann, Marco Giani, Christian Scheifele i Jörg Fehr. "Hybrid Digital Twins Using FMUs to Increase the Validity and Domain of Virtual Commissioning Simulations". W Advances in Automotive Production Technology – Towards Software-Defined Manufacturing and Resilient Supply Chains, 200–209. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-27933-1_19.
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AbstractThe main objective of virtual commissioning is to help design and validate the control systems of entire production plants. Therefore, simulations on a logical and kinematic level are performed, typically in a Software- or Hardware-in-the-Loop configuration using the original control software and controller [1].However, the lack of level of detail means that this type of simulation is insufficient for an integrated system dynamics and control algorithms design. These engineering tasks are currently performed in separate tools, e.g. by finite element analysis, multibody simulations or by a combination, i.e. elastic multibody systems (EMBS) [2]. However, the designed components are only considered individually and not in the context of the control technology used. Therefore, primarily synthetic inputs are used and not the original control behavior. With a higher level of simulation detail, further questions about the system, such as the effect of control algorithms on the dynamic processes, can be virtually validated.Therefore, this paper explores hybrid component-based digital twins to combine the advantages of both VC and EMBS. Hybrid components allow the simulation of the interactions between process, machine and control system with a high level of detail where this is beneficial. Such integration is achieved using the Functional Mock-up Interface (FMI) to couple different simulation models in a co-simulation environment [3]. This is demonstrated in a simulation use case of an inverted pendulum. The level of detail of individual components in the virtual commissioning tool ISG-virtuos [4] is increased by the modular integration of elastic multibody simulations via FMI so that the swing-up controller can be designed in the simulation.
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Hussain, Israfil, D. C. Das, A. Latif, N. Sinha i S. Ranjan. "FPA Optimized Controller for Frequency Control of Dish Stirling/Diesel/Fuel Cell/Energy Storage Based Autonomous Hybrid System". W Learning and Analytics in Intelligent Systems, 219–27. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-42363-6_26.
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Dei, Geetanjali, Deepak Kumar Gupta i Binod Kumar Sahu. "Squirrel Search Algorithm (SSA)-Driven Optimal PID-FOI Controller for Load Frequency Control of Two-Area Multi-Source Power System". W Smart Technologies for Power and Green Energy, 305–15. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2764-5_25.
Pełny tekst źródłaStreszczenia konferencji na temat "FPI CONTROLLER"
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Belai, Igor, i Mikulas Huba. "Adaptive DO-FPI controller for the first-order plant". W 2014 ELEKTRO. IEEE, 2014. http://dx.doi.org/10.1109/elektro.2014.6847887.
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Bharti, Roshan, Rishika Trivedi i Prabin Kumar Padhy. "Design of FPI-PD Controller for Brushless DC Motor". W 2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES). IEEE, 2018. http://dx.doi.org/10.1109/icpeices.2018.8897423.
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Biswal, Sunita S., Dipak Ranjan Swain i Pravat Kumar Rout. "VSC based HVDC Transmission System using Adaptive FPI Controller". W 2021 International Conference in Advances in Power, Signal, and Information Technology (APSIT). IEEE, 2021. http://dx.doi.org/10.1109/apsit52773.2021.9641283.
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Asad, Muhammad, Muhammad Arif i Uzair Khan. "Speed control of Induction Motor via Fuzzy Proportional Integral (FPI) controller". W 2016 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube). IEEE, 2016. http://dx.doi.org/10.1109/icecube.2016.7495220.
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Patel, Nimai Charan, Karisma Mohanty, Bhabatosh Giri i Subash Kumar Ekka. "Load Frequency Control in Two Area Interconnected Hydro-thermal Power System Utilizing ALO Based FPI Controller". W 2022 International Conference on Intelligent Controller and Computing for Smart Power (ICICCSP). IEEE, 2022. http://dx.doi.org/10.1109/iciccsp53532.2022.9862031.
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Satapathy, Priyambada, Manoj Kumar Debnath, Manjit Bahadur Singh i Pradeep Kumar Mohanty. "Design of FPI controller for load frequency control of a nonlinear power system". W 2018 Technologies for Smart-City Energy Security and Power (ICSESP). IEEE, 2018. http://dx.doi.org/10.1109/icsesp.2018.8376681.
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Satapathy, Priyambada, Jugajyoti Sahu, Nimai Charan Patel, Manoj Kumar Debnath, Pradeep Kumar Mohanty i Jyoti Ranjan Padhi. "Design and implementation of EVDEPSO based IDN-FPI controller for AGC in interconnected non-reheat thermal power system". W 2020 International Conference on Computational Intelligence for Smart Power System and Sustainable Energy (CISPSSE). IEEE, 2020. http://dx.doi.org/10.1109/cispsse49931.2020.9212206.
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Bashir, Ahmed, Xiaoting Rui i Adeel Shehzad. "Ride Comfort Enhancement of MR-Damped Vehicle Suspension System Based on Fractional Order Fuzzy PI+D Controller". W ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97739.
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Abstract In this paper, a fractional order fuzzy proportional-integral plus differential (FOFPI+D) controller is presented for nonlinear vehicle semi-active suspension system (SAS). The control goal is to meliorate the ride quality level by minimizing the root mean square of vehicle body vertical acceleration (RMSVBVA) and maintaining suspension travel. The FOFPI+D controller is realized using non-integer differentiator operator in fuzzy proportional integral (FPI) controller plus the derivative (D) action with additional fractional differentiator. A dynamical model of four degrees–of–freedom vehicle suspension system incorporating magnetorheological dampers (MRD’s) is derived and simulated using Matlab/Simulink software. The performance of the semi-active suspension system using FOFPI+D controller is compared to MR-passive suspension system. The simulation results prove that semi-active suspension system controlled using FOFPI+D outperform and offer better comfort ride under road profiles such as random and bump.
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Karvonen, Matti, Matti Linjama, Mikko Heikkilä i Kalevi Huhtala. "Analysis of Signals and Power Flow in a Digital Hydraulic Multi Actuator Aplication". W 8th FPNI Ph.D Symposium on Fluid Power. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fpni2014-7845.
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A combination of digital hydraulic four notch control valves and the digital hydraulic power management system (the DHPMS) has many controller levels, both parallel and series. The DHPMS is a multi-port sink/source of hydraulic power. Digital hydraulic valves are used to control the actuators. Both the DHPMS and the digital valves are based on the idea that all complexity is in the software and the hardware is based on arrays of mechanically simple base units. Controllers work together merging into a power flow system where the whole power transfer line is controlled from a single pumping piston within the pump to the movement of the tip of the boom. Or vice versa, if the operating conditions allow negative power to be routed backwards. In the paper certain measurements are looked into; second by second and a signal by a signal. The paper presents and verifies functionality of the novel combination of technologies. How signals flow in the controllers and how they actually control the power flow in the system is explained. The test system is a two-actuator boom, and as two is the smallest example of multi, the controller is designed by a simple and robust control method.
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Herranen, Mika, i Kalevi Huhtala. "Electro Hydraulic Gas Exchange Valve Actuation of 4-Stroke Large Bore Diesel Engine". W 8th FPNI Ph.D Symposium on Fluid Power. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fpni2014-7804.
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After several years of study, a large bore diesel engine Electro-Hydraulic Valve Actuation (EHVA) system has reached a development point where the system has been successfully used for years in laboratory test engine environment too. During the evolution of the EHVA, insight of the hydraulic and control systems features has been cleared. This paper concludes main findings and results of EHVA research in Tampere University of Technology / IHA. The hydraulic circuit effect to the power consumption of EHVA is clear. 3-way controlled actuator has advantages compared to 4-way controlled system. Direction control valve defines controllability of the system, and has source of the largest single component power loss. Hydraulic actuator design has also a fair effect to the overall power consumption when pressure force vs. required flow changes heavily, due to load forces. Mechanically, return spring design of the gas exchange valve has great effect to power consumption too. Controller design is dependent on what kind of performance is required. The controller compensates lack of control valve bandwidth, and reacts to changing environmental variables. In this state, the Iterative Learning Controller (ILC) has proved the best choice. If gas exchange valve exact lift motion during the lift event is not important but variation between the strokes is kept in narrow range, a Model-Based Controller (MBC) is a strong option.
Raporty organizacyjne na temat "FPI CONTROLLER"
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Luo, Minjing, Yilin Li, Yingqiao Wang, Jinghan Huang, Zhihan Liu, Yicheng Gao, Qianyun Chai, Yuting Feng, Jianping Liu i Yutong Fei. The Fragility of Statistically Significant Findings from Depression Randomized Controlled Trials. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, kwiecień 2023. http://dx.doi.org/10.37766/inplasy2023.4.0086.
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Review question / Objective: The Fragility of Statistically Significant Findings from Depression Randomized Controlled Trials. Condition being studied: Depression is a mental disorder characterized by a range of symptoms, including loss of memory and sleep, decreased energy, feelings of guilt or low mood, disturbed appetite, poor concentration, and an increased risk of suicide. According to a systematic analysis of the Global Burden of Disease Study 2019, depression is recognized as the leading cause of disease burden for mental disorders, accounting for the largest proportion of disability-adjusted life years (DALYs) at 37.3%. The fragility index (FI), which is the minimum number of changes from events to non-events resulting in loss of statistical significance, has been suggested as a means to aid the interpretation of trial results, as the potential inadequacy about robustness of threshold P-value as a tool for reporting binary outcomes in clinical trials. In this systematic review, we want to calculate the FI of randomized controlled trials (RCTs) in depression.
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Riter, Karmann, Anthony Clint Clayton, Kelley Rountree i Prakash Doraiswamy. Solar Station for an Off-the-Grid Air Quality Sensor System. RTI Press, czerwiec 2023. http://dx.doi.org/10.3768/rtipress.2023.mr.0051.2306.
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Air quality monitoring is a rapidly growing area of citizen science, or community science (CS), thanks to the availability of low-cost sensors. Contributing to a crowdsourced data platform (e.g., http:// purpleair .com/ map) is usually easy in urban areas, where there is access to uninterrupted electricity and wireless internet (Wi-Fi). However, there are sometimes security restrictions on Wi-Fi or a lack of exterior power outlets. Also, rural regions, particularly in low- and middle-income countries, often lack electricity and Wi-Fi continuity. RTI International has designed and distributed a solar power and Wi-Fi station that can adequately power both a small air quality sensor (e.g., PurpleAir PA-II) and a Wi-Fi hotspot to overcome these challenges. The station housing can accommodate a battery, a controller, and a cell phone or another type of Wi-Fi hotspot device. This paper discusses the need for such a station; a design for the current station, including parts list; suggestions for modifications in various use cases; and design factors to consider, including amount of sunlight per day, intended number of operational days under cloudy conditions, season, and total power requirements. This method is intended to be open source and a starting point for citizen scientists and CS projects.
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Informe de la Junta Directiva al Congreso de la República - Julio de 2023. Banco de la República, sierpień 2023. http://dx.doi.org/10.32468/inf-jun-dir-con-rep.4-2023.
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En el transcurso del primer semestre de 2023 la economía colombiana continuó avanzando en el proceso de ajuste requerido para corregir los desequilibrios macroeconómicos y controlar las presiones inflacionarias acumuladas tras los diversos choques de oferta y la rápida expansión de la demanda durante 2021 y 2022, la cual superó el crecimiento potencial de la economía. El ajuste económico en curso ha sido posible gracias a la moderación del crecimiento de la demanda interna y a la progresiva disolución de los choques de oferta que elevaron los costos de producción. La demanda interna comenzó a desacelerase en los últimos meses de 2022 y se contrajo un -0,2 % en el primer trimestre de este año, debido al menor crecimiento del consumo de los hogares y a la caída de la formación bruta de capital. Por su parte, los menores precios internacionales de las materias primas, la paulatina normalización de las cadenas de suministro y la apreciación de la tasa de cambio han contribuido a disipar los choques de oferta, lo cual se ha reflejado en una disminución de la inflación anual de precios al productor desde un nivel del 19,2 % a finales de 2022 al 4,7 % en junio de 2023 1. El menor dinamismo de la demanda interna se ha venido reflejando en una desaceleración progresiva de la actividad económica. Es así como en el primer trimestre de 2023 el PIB registró un crecimiento anual del 3,0 %, ritmo equivalente a una tercera parte del crecimiento promedio anual que se observó durante los tres primeros trimestres de 2022 (9,1 %). Según el indicador de seguimiento de la economía (ISE) que elabora el DANE, esta pérdida de dinamismo continuó en abril y mayo, al registrarse variaciones de ese indicador del -0,8 % y 0,6 %, respectivamente, frente a los mismos meses de 2022. Estos resultados fueron inferiores a lo observado en marzo (1,4 %), en la serie del ISE ajustada por efecto estacional y calendario. Ello apunta a que el crecimiento del PIB seguirá declinando en el segundo trimestre, lo cual es coherente con el pronóstico de crecimiento del PIB ligeramente inferior al 1,0 % para 2023 elaborado por el equipo técnico. A pesar de la desaceleración económica en curso, el mercado laboral sigue mostrando fortaleza, como se deduce del continuo descenso de la tasa de desempleo en el agregado nacional hasta el trimestre móvil terminado en mayo (10,4 %), su valor más bajo desde el inicio de la pandemia del covid-19 2. La desaceleración de la actividad económica es un fenómeno que se anticipaba, en parte, como resultado de la política monetaria restrictiva que adoptó el Banco de la República para controlar las presiones inflacionarias. A la menor actividad económica también estaría contribuyendo una política fiscal menos expansionista que en 2022, según se contempla en los pronósticos presentados en el Marco Fiscal de Mediano Plazo de 2023 (MFMP-23). A esto se añadió una desaceleración de la demanda externa relevante para el país debido al menor crecimiento de los socios comerciales, en un contexto internacional de altas tasas de interés de política monetaria, tasas de inflación por encima de sus metas y elevada incertidumbre generada por la prolongación de la invasión de Rusia a Ucrania. La Junta Directiva del Banco de la República (JDBR) ha sido reiterativa en sus diversas comunicaciones sobre la necesidad de adelantar este proceso de ajuste, para lograr el retorno gradual de la inflación a la meta del 3 %, corregir los desequilibrios macroeconómicos y asegurar la sostenibilidad del crecimiento económico en el largo plazo. La responsabilidad constitucional que recae sobre el Banco de la República, sobre la cual se hizo énfasis en el pasado Informe al Congreso, exige mantener una inflación baja y estable en consonancia con la política económica en general, de manera que permita apoyar un crecimiento económico sostenible y un balance externo financiable. Las decisiones de política monetaria se han adoptado con el respaldo de la sólida base institucional y técnica que soporta el esquema de inflación objetivo, cimentada en la experiencia acumulada durante más de dos décadas por el banco central. Los motivos específicos que ha tenido la JDBR para emprender un proceso de ajuste monetario, el más fuerte desde que el Banco de la República adoptó la estrategia de inflación objetivo, han sido complejos y de diversa índole. Las presiones inflacionarias provinieron inicialmente de choques de oferta de origen externo e interno que presionaron al alza los costos y precios de los alimentos y otros productos de consumo, a las cuales se agregaron presiones de origen cambiario. Estos choques llevaron a un incremento de las expectativas de inflación, lo cual desató un proceso de indexación de precios, que se exacerbó debido a los excesos de demanda que surgieron en 2022. La respuesta de la política monetaria mediante el incremento de las tasas de interés buscaba reducir los excesos de demanda, contener el aumento de las expectativas y limitar los efectos de la indexación de precios. Todo ello crea las condiciones propicias para permitir que, a medida que los choques de oferta cedan y se alivien, y con ello las presiones de costos, la inflación empiece a reducirse. Este es un proceso que se cumple con cierto rezago, pero que, dado el tiempo que la política monetaria lleva actuando, ya se ha empezado a producir, como lo mostró la reciente disminución de la tasa de inflación y la revisión a la baja de sus expectativas a diferentes plazos. Acorde con el mandato constitucional de asegurar una coordinación de la política monetaria con la política económica general, además de mitigar las presiones inflacionarias, el ajuste monetario viene cumpliendo el propósito de corregir los desequilibrios macroeconómicos que ponen en riesgo la estabilidad de la economía colombiana. Al respecto, no cabe duda de que el crecimiento del PIB del 7,3 % en 2022 fue sobresaliente, al haber más que duplicado el crecimiento mundial (3,5 %) y superado ampliamente la expansión de América Latina y el Caribe (3,9 %), según cifras del FMI. Un dinamismo económico tan elevado trae importantes ganancias de bienestar, en particular cuando permite reducir las tasas de desempleo, como ha venido ocurriendo en Colombia; sin embargo, es un crecimiento insostenible en tanto se fundamenta en una situación fiscal ampliamente deficitaria y en un preocupante incremento en el endeudamiento de los hogares. Ello generó un exceso de demanda agregada que no solo presionó al alza la inflación y sus expectativas, sino que también amplió el déficit de la cuenta corriente de la balanza de pagos a niveles históricamente altos durante varios años. El déficit de la cuenta corriente aumentó desde un nivel del 5,6 % del PIB en 2021, que ya era elevado, a uno del 6,2 % del PIB en 2022, uno de los más altos observados en Colombia. La ampliación del desbalance externo en 2022 se produjo en un año en el que los precios internacionales del petróleo, el carbón y el café se mantuvieron en niveles favorables, lo que contribuyó al buen desempeño de las exportaciones. No obstante, para cubrir los faltantes de oferta, la economía incrementó de manera importante su demanda de importaciones, impidiendo una reducción del desbalance externo. Como consecuencia, la economía colombiana recurrió a un mayor endeudamiento externo, bien sea como flujo de inversión de portafolio o como endeudamiento directo. Todo esto muestra la vulnerabilidad que significa para la economía mantener un nivel de gasto que supera significativamente sus ingresos. La política monetaria restrictiva, junto con el aumento en la carga tributaria, han venido induciendo un ajuste progresivo de estos desequilibrios. La desaceleración de la demanda interna iniciada a partir del cuarto trimestre de 2022 ocurrió de la mano de una moderación del consumo de los hogares, cuyo crecimiento en el primer trimestre de 2023 fue del 3,0 %, comparado con un incremento del 9,5 % en 2022. Esto último se ha reflejado en una desaceleración del crédito de consumo, que pasó de crecer desde un ritmo cercano al 23 % anual a finales del tercer trimestre del año anterior, a algo menos del 7,0 % anual a mediados de junio de 2023. De haberse continuado con una expansión tan rápida del crédito de consumo, se habría podido generar una situación insostenible sobre la capacidad de pago de los hogares. Asimismo, la formación bruta de capital, que tuvo un desempeño sobresaliente en 2022, empezó a mostrar ajustes en sus principales componentes. La principal fuente de dicha corrección ha sido la inversión en maquinaria y equipo, que en el primer trimestre del año presentó caídas tanto en términos trimestrales como anuales, principalmente en el rubro de equipo de transporte. A la par con el avance en la corrección de los desequilibrios macroeconómicos, la inflación total interrumpió la tendencia creciente que mantuvo hasta marzo de 2023. En efecto, luego de alcanzar un nivel del 13,1 % al cierre del año anterior, la inflación total se mantuvo estable alrededor del 13,3 % durante los primeros tres meses de 2023, y a partir de abril empezó a descender, para ubicarse en 12,1 % en junio. Los alimentos han sido el rubro que más ha contribuido a este cambio de tendencia, al haber reducido su variación anual del 27,8 % en diciembre pasado al 14,3 % en junio. Esta variación ha sido compensada en alguna medida por el incremento de la inflación de regulados, debido a los sucesivos aumentos en los precios de la gasolina. Por su parte, la inflación básica (sin alimentos ni regulados) continúa mostrando rigidez, al ubicarse en el 10,5 % en junio, lo que refleja procesos de indexación de precios. La subcanasta de servicios ha sido especialmente afectada por el fenómeno de indexación, a lo cual se han agregado las presiones de costos laborales, el aumento en los precios de los alimentos que han presionado al alza las comidas fuera del hogar y la elevada demanda por servicios de entretenimiento. Este comportamiento debería ir cediendo a medida que los efectos de la política monetaria terminen por transmitirse a la economía, y la tendencia decreciente de la inflación se refleje en una revisión a la baja de las expectativas de variación de precios por parte del público. Así lo prevén los pronósticos del equipo técnico y las expectativas del mercado que anticipan una inflación decreciente durante los próximos dos años. ____________________________________________________________ 1 Corresponde a la variación anual del IPP de oferta interna. 2 Al cierre de este Informe se conocieron los datos de la Gran Encuesta Integrada de Hogares de junio, con los cuales la tasa de desempleo se mantuvo estable en su medición desestacionalizada del agregado nacional para el trimestre móvil (10,3 %), aunque con una reducción para el dato puntual de junio