Bibliographies thématiques / LTV system

Littérature scientifique sur le sujet « LTV system »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "LTV system"

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Zhao, Haipeng, et Joseph Bentsman. « Biorthogonal Wavelet Based Identification of Fast Linear Time-Varying Systems—Part I : System Representations12 ». Journal of Dynamic Systems, Measurement, and Control 123, no 4 (27 décembre 2000) : 585–92. http://dx.doi.org/10.1115/1.1409549.

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An analytical framework is developed that permits the input-output representations of discrete-time linear time-varying (LTV) systems in terms of biorthogonal bases on compact time intervals. Using these representations, the companion paper, Part II develops computational procedures for rapid identification of fast nonsmooth LTV systems based on short data records. One of the representations proposed is also used in H. Zhao and J. Bentsman, “Block Diagram Reduction of the Interconnected Linear Time-Varying Systems in the Time Frequency Domain,” accepted for publication by Multidimensional Systems and Signal Processing to form system interconnections, or wavelet networks, and develop subsystem connectibility conditions and reduction rules. Under the assumption that the inputs and the outputs of the plants considered in the present work belong to lp spaces, where p=2 or p=∞, their impulse responses are shown to belong to Banach spaces. Further on, by demonstrating that the set of all bounded-input bounded-output (BIBO) stable discrete-time LTV systems is a Banach space, the system representation problem is shown to be reducible to the linear approximation problem in the Banach space setting, with the approximation errors converging to zero as the number of terms in the representation increases. Three types of LTV system representation, based on the input-side, the output-side, and the input-output transformations, are developed and the suitability of each representation for matching a particular type of the LTV system behavior is indicated.
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Pirgaip, Burak, et Ali Hepsen. « Loan-to-value policy : evidence from Turkish dual banking system ». International Journal of Islamic and Middle Eastern Finance and Management 11, no 4 (12 novembre 2018) : 631–49. http://dx.doi.org/10.1108/imefm-08-2017-0208.

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Purpose This paper aims to answer how effective the loan-to-value (LTV) regulation has been since 2011 for conventional and Islamic (participation) banks in Turkey in terms of curbing mortgage loan growth and delinquency[1]. Design/methodology/approach The authors first use unit root tests and tests of difference in loan and property price data in pre-LTV and post-LTV period. Second, the authors follow Chow test and ordinary least squares regression analyses to test for a structural break when sensitivity of mortgage loan and delinquency growth changes to property price changes considered. Findings The authors find that two periods are statistically different, while the significance level is lower for Islamic banks. Moreover, loan growth has become less responsive to property price increases; delinquency sensitivity to property price changes has significantly increased in the post-LTV period for conventional banks, while this is not the case for Islamic (participation) banks. Originality/value This paper not only increases empirical evidence regarding the effectiveness of LTV ratio policy but also fills the gap in the literature by providing a comparison between conventional banks and Islamic (participation) banks.
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Kunt, Cengiz, et Rajendra Singh. « Application of Floquet Theory to On-Off Valve Controlled Pneumatic Actuators ». Journal of Dynamic Systems, Measurement, and Control 114, no 2 (1 juin 1992) : 299–305. http://dx.doi.org/10.1115/1.2896528.

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A periodic linear time varying (LTV) model for on-off valve controlled pneumatic actuation systems, was described in an earlier paper by the authors. Based on this LTV model formulation, Floquet’s Theorem is invoked to characterize dynamic response of the system. A new computational technique called the expanded state space method is developed to calculate the frequency response of the LTV system with staircase coefficient variations. This technique is computationally superior to the straightforward solution scheme. Floquet Theory is also used to assess the nature of transient response. A single acting cylinder system controlled by an on-off valve is considered to illustrate the stability and transient response issues. Computer simulation based on the nonlinear model is used to obtain detailed results. It is shown that application of the Floquet Theory provides valuable insight into the dynamic response of the class of actuators considered.
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Liu, Chuan Shao, Hao Qiong Wu et Ao Mei Luo. « Design of Longitudinal-Torsional Vibration Stepped Horn with Multiple Diagonal Slits ». Applied Mechanics and Materials 312 (février 2013) : 51–54. http://dx.doi.org/10.4028/www.scientific.net/amm.312.51.

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Based on the theory of acoustic propagation, the realization mechanism of longitudinal-torsional vibration (LTV) by converter of cylinder with multiple diagonal slits (MDS) under single excitation was studied. The influences of composite stepped horns structural parameters on resonant frequency were studied by numerical analysis method, and the horn (resonant frequency about 20kHz) with LTV was designed. The results show that LTV could be realized under single excitation of longitudinal vibration when resonant frequency is 20498Hz, and the amplitude varied periodically. The results can be applied in the design of acoustic system in ultrasonic machining with LTV.
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Zhang, Kun, Hui Li, Zhong Dong Duan et S. S. Law. « Identification of Local Time-Varying Systems Based on Dynamic Response Sensitivity ». Applied Mechanics and Materials 166-169 (mai 2012) : 3379–82. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.3379.

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A new method based on dynamic response sensitivity is proposed for the identification of local linear time-varying (LTV) system. The unknown local LTV structural stiffness is modeled by orthogonal polynomial approximations, and the sensitivities of structural dynamic response with respect to orthogonal coefficients are derived. The identification equation is set up based on Taylor’s first order approximation, and is solved with the damped least-squares method. A fifteen-story shear building is studied to validate the proposed method. Three ideal cases of LTV systems, with periodically, abruptly and randomly varying stiffness at the 8th story of the structure, are investigated to illustrate the capability of the algorithm to track the variations of the systems. Numerical simulation with noisy measured accelerations shows that the proposed method can accurately identify various kinds of local time-varying system from only several responses of the structure. This method provides a new approach for detecting local time-varying stiffness of structures with incomplete measured output information.
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Marchesiello, S., A. Bellino et L. Garibaldi. « Prediction of Modal Parameters of Linear Time-Varying Systems ». Shock and Vibration 17, no 4-5 (2010) : 483–90. http://dx.doi.org/10.1155/2010/184087.

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Many engineering structures, such as cranes, traffic-excited bridges, flexible mechanisms and robotic devices exhibit characteristics that vary with time and are referred to as time-varying or nonstationary. In particular, linear time-varying (LTV) systems have been often dealt with on a case-by-case basis. Many concepts and analytic methods of linear time-invariant (LTI) systems cannot be applied to LTV systems, as for example the conventional definition of modal parameters. In fact, LTV systems violate one of the assumptions of the conventional modal analysis, which is stationarity.Subspace-based identification methods, proposed in the 1970s, have been attracting much attention due to their affinity to the modern control theory, which is based on the state space model. These methods are now successfully applied to many industrial cases and may be considered reference methods for identifying LTI systems.In this paper the use of a subspace-based method for identifying LTV systems is discussed and applied to both numerical and experimental systems. More precisely a modified version of the SSI method, referred to here as ST-SSI (Short Time Stochastic Subspace Identification) is introduced as well as a method for predicting time-varying stochastic systems using the angle variation between the subspaces; the latter is able to predict the system parameter in the “near” future.
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Zheng, Jian Xin, Jie Han et Chuan Shao Liu. « Numerical Design of Stepped Compound Horn with Longitudinal-Torsional Vibration under Single Acoustic Excitation ». Key Engineering Materials 621 (août 2014) : 385–91. http://dx.doi.org/10.4028/www.scientific.net/kem.621.385.

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The mechanism of longitudinal-torsional vibration (LTV) realized by using converter with multiple diagonal slits (MDS) was analyzed based on the acoustic wave propagation when acoustic wave enters obliquely from steel to air. The influences of geometrical parameters of the stepped compound horn with multiple diagonal slits on natural frequencies of LTV were studied with finite element analysis (FEA). The design procedure of stepped compound horn with LTV was provided. The vibration characteristics of actual horn were analyzed with simulation and test. The FEA results show that LTV of the output end of the stepped compound horn may be realized when the input end is excited by longitudinal vibration at certain natural frequency if suitable geometrical dimensions are selected, and the amplitude of the horn is periodical; the trajectory of the particle in the output end is helical curve. The test results indicate that LTV may be realized by stepped compound horn under single acoustic excitation, and the vibration frequency is close to the simulation result, and its vibration properties are good. This method may be applied to design the acoustics system of ultrasonic machining with LTV under single acoustic excitation.
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Ayuningtyas, Fitri Juniwati. « THE PREFERENCES FOR HOUSING LOAN DEMAND IN INDONESIA BEFORE AND AFTER THE LOAN-TO-VALUE POLICY CHANGE ». Jurnal Ekonomi Bisnis dan Kewirausahaan 11, no 2 (31 août 2022) : 131. http://dx.doi.org/10.26418/jebik.v11i2.52888.

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The high price of houses causes a person to not be able to buy a home. The way that someone can own a house is by taking advantage of the credit offers provided by the bank. A mcroprudential policy needed that aims to overcome financial system instability, one of which is the policy on easing the loan-to-value (LTV) ratio for housing loans (KPR). The adjustment of LTV ratio aims to increase the potential demand for property, especially housing and household appliances, in line with an increase in the incomes of the lower middle class, and to control risks in the property sector. This study analyzes the impact of savings, loan interest rates, property sector NPLs, and the number of housing loans before and after a LTV policy revision. The data analysis used the Paired t-test, Wilcoxon signed-rank test, and multiple linear regression. The study results showed that there were differences between savings, loan interest rates, property sector NPLs, and the number of mortgages before and after a LTV policy change. Savings and NPLs in the property sector have no impact on the demand for housing loans while loan interest rates and LTV policy significantly affect the demand for housing loans.
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Korotina, Marina, Stanislav Aranovskiy et Alexey Bobtsov. « Disturbance Frequency Estimation for an LTV System ». IFAC-PapersOnLine 55, no 12 (2022) : 318–23. http://dx.doi.org/10.1016/j.ifacol.2022.07.331.

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Luo, Ao Mei, Jian Xin Zheng et Hao Qiong Wu. « Kinematics Analysis on Ultrasonic Deep Rolling with Longitudinal-Torsional Vibration ». Advanced Materials Research 630 (décembre 2012) : 148–52. http://dx.doi.org/10.4028/www.scientific.net/amr.630.148.

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The kinematics model was built based on the principle of ultrasonic deep rolling (UDR) with longitudinal-torsional vibration (LTV), and the trajectory equations of any particles on edge of the roller involved in the process were given; the influences of vibration parameters including phase angle, frequency of LTV, amplitude of longitudinal vibration, amplitude ratio and the rolling process parameters including roller radius, rolling depth, feed rate, the rotation frequency of roller on the trajectory, acoustic system design and processing quality were discussed. The results can provide theoretical basis for the design of acoustic system and optimization of process parameters.
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Thèses sur le sujet "LTV system"

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Benner, Peter, et Sabine Hein. « Model predictive control based on an LQG design for time-varying linearizations ». Universitätsbibliothek Chemnitz, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-201000221.

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We consider the solution of nonlinear optimal control problems subject to stochastic perturbations with incomplete observations. In particular, we generalize results obtained by Ito and Kunisch in [8] where they consider a receding horizon control (RHC) technique based on linearizing the problem on small intervals. The linear-quadratic optimal control problem for the resulting time-invariant (LTI) problem is then solved using the linear quadratic Gaussian (LQG) design. Here, we allow linearization about an instationary reference trajectory and thus obtain a linear time-varying (LTV) problem on each time horizon. Additionally, we apply a model predictive control (MPC) scheme which can be seen as a generalization of RHC and we allow covariance matrices of the noise processes not equal to the identity. We illustrate the MPC/LQG approach for a three dimensional reaction-diffusion system. In particular, we discuss the benefits of time-varying linearizations over time-invariant ones.
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ABDALLA, TALAL ALMUTAZ ALMANSI. « Recursive Algorithms for Set-Membership Estimation ». Doctoral thesis, Politecnico di Torino, 2022. https://hdl.handle.net/11583/2972788.

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Sereni, Bruno. « Static output feedback control for LPV and uncertain LTI systems / ». Ilha Solteira, 2019. http://hdl.handle.net/11449/180732.

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Orientador: Edvaldo Assunção
Resumo: Este trabalho aborda o controle via realimentação estática de saída aplicado à sistemas lineares com parâmetro variante (LPV) e lineares incertos invariantes no tempo (LIT). O projeto de ganhos de realimentação estática de saída apresentado neste trabalho é baseado no método dos dois estágios, o qual consiste em primeiramente obter um ganho de realimentação de estados, e então, utilizar esta informação no segundo estágio para obter-se o ganho de realimentação estática de saída desejado. As soluções para os problemas investigados são apresentadas na forma de desigualdades matriciais lineares (no inglês, linear matrix inequalities, LMIs), obtidas por meio da aplicação do Lema de Finsler. Baseado em resultados anteriores encontrados na literatura, este trabalho propõe uma estratégia de relaxação de forma a obter um método menos conservador para obtenção de ganhos robustos de realimentação estática de saída para sistemas incertos LTI. Na estratégia proposta, as variáveis adicionais do Lema de Finsler são consideradas como dependentes de parâmetro, juntamente com o uso de funções de Lyapunov dependentes de parâmetro (no inglês, parameter-dependent Lyapunov functions, PDLFs). É apresentado um estudo avaliando a eficácia da estratégia proposta em fornecer uma maior região de factibilidade para um dado problema. Os resultados foram utilizados em uma comparação com um método de relaxação baseado apenas no uso de PDLFs. Uma segunda contribuição deste trabalho consiste na proposta de um... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The static output feedback (SOF) control applied to linear parameter-varying (LPV) and uncertain linear time-invariant (LTI) systems are addressed in this work. The approach chosen for the design of SOF gains is based on the two-stage method, which consists in obtaining a state feedback gain at first, and then using that information for deriving the desired SOF gain at the second stage. The solutions for the investigated problems are presented in terms of linear matrix inequalities (LMIs), obtained by means of the application of the Finsler's Lemma. Based on previous papers found in literature, this work proposes a relaxation strategy in order to achieve a less conservative method for obtaining robust SOF gains for uncertain LTI systems. In the proposed strategy, the Finsler's Lemma additional variables are considered to be parameter-dependent along with the use of parameter-dependent Lyapunov functions (PDLFs). A study evaluating the effectiveness of the proposed strategy in providing a larger feasibility region for a given problem is presented. The results were used in a comparison with a relaxation method based only on PDLFs. Another contribution of this work lies in the proposal of a solution for the control of LPV systems via the design of a gain-scheduled SOF controller. The methods proposed for both control problems were applied on the design of controllers for an active suspension system. In the experiments, it was assumed that only one of its four system's states wer... (Complete abstract click electronic access below)
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Kounek, Milan. « Model fyzické vrstvy systému LTE ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220269.

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Master’s thesis deals with the signal processing in LTE system, specifically focuses on the physical layer. The first part describes in detail the signal processing at the physical layer of the LTE system. Based on the acquired knowledge of signal processing is created a block diagram that graphically describes the process of the signal processing. Next part deals with the created mathematical model, which is programmed in Matlab. This section describes the limitations of the model, configuration options and view simulation results. The last part shows the results of simulations and analyzed the results.
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Holmberg, Mattias, et Stefan Hen. « LTA kontra självfall : Ett långsiktigt perspektiv ». Thesis, KTH, Byggteknik och design, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127665.

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Detta arbete syftar till att göra en utvärdering av hur de två skilda spillvattensystemen LTA (Lätt TryckAvlopp) och konventionellt självfallsavlopp står sig mot varandra ur ett långtidsperspektiv. Aspekter så som investering, drift, underhåll, miljöpåverkan, teknik och anläggning har analyserats och sammanställs av denna rapport, samt ett program som beräknar den ekonomiska aspekten mellan respektive system. Programmet, där användaren ges möjligheten att specificera sitt eget område, ger en fingervisning om den lösning som ur ekonomisk aspekt är mest fördelaktig. Detta kombinerat med den kunskap som samlats i rapporten ska leda till ett mer medvetet val hos kommuner och andra VA-huvudmän i Sverige.
The purpose of this report is to make a comparison between the two currently used sewage solutions, PSS (Pressure Sewage System) and the more conventional gravity based sewage-system during a vast period of time. Aspects such as investment, maintenance, upkeep, environmental, technology and terrain have been analyzed. The research has resulted in this report and an Excel-program which calculates an estimated economical difference between the two solutions, in a specific case chosen by the user, to determine which is more economically beneficial. This program, used hand in hand with the report, is suppose to increase the knowledgebase regarding the subject of sewage solutions among officials working with these kinds of matters in Sweden.
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Ellenbeck, Jan [Verfasser]. « Radio Resource Management and System Spectral Efficiency in LTE Multi-Cell Systems / Jan Ellenbeck ». München : Verlag Dr. Hut, 2015. http://d-nb.info/1076437621/34.

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Ohera, Vlastimil. « Vysokorychlostní mobilní systém LTE ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218045.

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Aim of thesis was to acquaint with architecture and process of signal in systems using broadband LTE wireless technology. Thesis in detail is described physical layer of system. Next there is described comparison of LTE and WiMAX and table with all present systems. Thesis also is contained information about tested LTE system in real traffic. Next aim was created simulation of LTE system in downlink and uplink. Interface was created for easier configuration of each characteristics of transfer and type of interference of useful signal. This interface is contained control of whole simulation and presentation of measured values. Measured data were processed into graphs, which show dependence of error rate BER on C/N of useful and interference signal.
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Krasowski, Piotr, et Douglas Troha. « Wireless system design : NB-IoT downlink simulator ». Thesis, Uppsala universitet, Signaler och System, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-317877.

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The newly defined NB-IoT standard currently lacks a toolkit and simulator. In order to develop algorithms for this new standard there is a need for channels and signals as reference during tests. MATLAB is commonly used for testing LTE signals and therefore the toolkit was developed in this environment. The toolkit focuses primarily on the Layer 1-relevant functionality of NB-IoT, the grid generation, encoding, rate-matching and modulation of channels. The simulator focuses on testing the developed toolkit in a virtual LTE NB-IoT environment. The virtual environment attempts to emulate a base station and a terminal. The path followed is scheduling, channel processing, grid generation, QPSK and OFDM modulation through a modeled channel, OFDM demodulation, channel estimation, equalisation, QPSK demodulation and reversal of channel processing. The simulator tests primarily the NPDSCH channel implementations. Measurements of bit error and block error rates were made and it was concluded that they follow the expected trends. More testing is required to validate the remaining channels. A sector equaliser and an interpolating equaliser were tested by measuring block error rate and checking constellation diagrams and it was concluded that the performance of the interpolation equaliser is more consistent. In order to improve the equalisation further the noise estimation must be reworked.
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Praveen, Vunnam. « Maximizing LTE performance with MIMO Systems ». Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-58272.

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The project explains Long Term Evolution (LTE) systems when used with Multiple-Input, MultipleOutput (MIMO) fulfill the growing demands in throughput and system robustness for the user. This is investigated by understanding the throughput capacity of LTE down-links in both spatial multiplexing and transmission diversity mode. The performance downgrades in LTE frame is analyzed. All the simulations are done in MATLAB. The simulations include Bit Error Rate (BER) being verified for values of Signal to Noise Ratio (SNR). MIMO systems use more than one antenna configuration for sending and receiving radio signals of the same frequency. The concept of beam forming may be utilized by MIMO systems. This is done by employing more than one antenna at both the ends namely transmitter (Tx) and receiver (Rx). The use of multiple antennas will achieve higher capacity and better cell coverage. MIMO technologies, when used in LTE, provide better down-link peak rates, cell coverage, and enhanced average cell throughput. LTE offers increased capacity while using standard antenna technique. This technique provides two vital aspects namely, spatial multiplexing (SM) and transmits diversity (TD). The project also explores the effect of different parameters namely, the speed of mobile station, the number of Multipath, Rician factor (K) on throughput is discussed and reported. The report evaluates the performance of LTE using MIMO in order to explain LTE system capacity, average cell throughput of LTE at different bandwidths and BER performance against SNR. The simulation outputs are shown as graphs and discussed.
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Al-Dulaimi, Anwer. « Cognitive radio systems in LTE networks ». Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/11544.

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The most important fact in the mobile industry at the moment is that demand for wireless services will continue to expand in the coming years. Therefore, it is vital to find more spectrums through cognitive radios for the growing numbers of services and users. However, the spectrum reallocations, enhanced receivers, shared use, or secondary markets-will not likely, by themselves or in combination, meet the real exponential increases in demand for wireless resources. Network operators will also need to re-examine network architecture, and consider integrating the fibre and wireless networks to address this issue. This thesis involves driving fibre deeper into cognitive networks, deploying microcells connected through fibre infrastructure to the backbone LTE networks, and developing the algorithms for diverting calls between the wireless and fibre systems, introducing new coexistence models, and mobility management. This research addresses the network deployment scenarios to a microcell-aided cognitive network, specifically slicing the spectrum spatially and providing reliable coverage at either tier. The goal of this research is to propose new method of decentralized-to-distributed management techniques that overcomes the spectrum unavailability barrier overhead in ongoing and future deployments of multi-tiered cognitive network architectures. Such adjustments will propose new opportunities in cognitive radio-to-fibre systematic investment strategies. Specific contributions include: 1) Identifying the radio access technologies and radio over fibre solution for cognitive network infrastructure to increase the uplink capacity analysis in two-tier networks. 2) Coexistence of macro and microcells are studied to propose a roadmap for optimising the deployment of cognitive microcells inside LTE macrocells in the case of considering radio over fibre access systems. 3) New method for roaming mobiles moving between microcells and macrocell coverage areas is proposed for managing spectrum handover, operator database, authentication and accounting by introducing the channel assigning agent entity. The ultimate goal is to reduce unnecessary channel adaptations.
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Livres sur le sujet "LTV system"

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LTE for UMTS : Evolution to LTE-Advanced. Chichester, West Sussex, United Kingdom : Wiley, 2011.

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Lawinski, C. P. Zenith Medical Systems Ltd. Superix 180 digital imaging system. (London) : (Medical Devices Agency), 1997.

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Wells, S. Zenith Medical Systems Ltd Superix 180 digital imaging system. London : Medical Devices Agency, 1997.

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Yuan, Yifei. LTE-Advanced Relay Technology and Standardization. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013.

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Glaudel, Mickael. LTI system response characterisation simulator. Manchester : UMIST, 1993.

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1970-, Holma Harri, et Toskala Antti, dir. WCDMA for UMTS : HSPA evolution and LTE. 4e éd. Chichester, UK : John Wiley & Sons, 2007.

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1967-, Parkvall Stefan, Sköld Johan et ScienceDirect (Online service), dir. 4G : LTE/LTE-Advanced for Mobile Broadband. San Diego : Academic Press [Imprint], 2011.

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Harris, L. IGE Medical Systems Ltd Stenoscop 2 Series 9000 mobile C-arm digital imaging system. London : Department of Health, Medical Devices Agency, 1996.

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Lawinski, C. P. IGE Medical Systems Ltd Stenoscop 2 series 9000 mobile C-arm digital imaging system. London : Department of Health, Medical Devices Agency, 1996.

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1970-, Holma Harri, et Toskala Antti, dir. LTE for UMTS-OFDMA and SC-FDMA based radio access. Chichester, West Sussex, U.K : Wiley, 2009.

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Chapitres de livres sur le sujet "LTV system"

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Bourlès, Henri, et Bogdan Marinescu. « Modeling : Choice of the Input Variables of an LTV System ». Dans Linear Time-Varying Systems, 515–22. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19727-7_9.

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Paklin, Nikolay B., Igor A. Katsko et Elena V. Kremyanskaya. « Using Loginom Low-Code Platform for the Modeling of LTV Site Subscriber ». Dans System Analysis in Engineering and Control, 461–72. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98832-6_41.

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Bourlès, Henri, et Bogdan Marinescu. « Analysis of LTV Systems ». Dans Linear Time-Varying Systems, 499–514. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19727-7_8.

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Bourlès, Henri, et Bogdan Marinescu. « Analytic Theory of LTV Systems ». Dans Linear Time-Varying Systems, 583–603. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19727-7_12.

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Abe, Tetsushi. « LTE System Performance ». Dans LTE - The UMTS Long Term Evolution, 599–611. Chichester, UK : John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9780470978504.ch26.

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Werner, Martin. « LTI-Systeme : Grundlagen ». Dans Digitale Signalverarbeitung mit MATLAB®, 143–67. Wiesbaden : Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-18647-0_7.

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Frey, Thomas, et Martin Bossert. « Diskrete LTI-Systeme ». Dans Signal- und Systemtheorie, 33–72. Wiesbaden : Vieweg+Teubner, 2008. http://dx.doi.org/10.1007/978-3-8348-9292-8_3.

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Frey, Thomas, et Martin Bossert. « Kontinuierliche LTI-Systeme ». Dans Signal- und Systemtheorie, 107–70. Wiesbaden : Vieweg+Teubner, 2008. http://dx.doi.org/10.1007/978-3-8348-9292-8_5.

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Frey, Thomas, et Martin Bossert. « Diskrete LTI-Systeme ». Dans Signal- und Systemtheorie, 33–72. Wiesbaden : Vieweg+Teubner Verlag, 2004. http://dx.doi.org/10.1007/978-3-322-96727-5_3.

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Frey, Thomas, et Martin Bossert. « Kontinuierliche LTI-Systeme ». Dans Signal- und Systemtheorie, 107–70. Wiesbaden : Vieweg+Teubner Verlag, 2004. http://dx.doi.org/10.1007/978-3-322-96727-5_5.

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Actes de conférences sur le sujet "LTV system"

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Sanandaji, Borhan M., Tyrone L. Vincent, Michael B. Wakin, Roland Toth et Kameshwar Poolla. « Compressive System Identification of LTI and LTV ARX models ». Dans 2011 50th IEEE Conference on Decision and Control and European Control Conference (CDC-ECC 2011). IEEE, 2011. http://dx.doi.org/10.1109/cdc.2011.6160935.

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Zhang, Zhen, Zongxuan Sun et Peiqing Ye. « An Internal Model-Based Tracking Control for a Class of Uncertain Linear Time-Varying Systems ». Dans ASME 2010 Dynamic Systems and Control Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/dscc2010-4271.

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In this paper, we extend previous results for a novel internal model-based tracking control with a class of known LTV plant models driven by LTI exosystems to uncertain LTI plant models driven by LTV exosystems. The augmented time-varying system to be stabilized becomes uncertain. Moreover, the time-varying fashion under consideration renders the augmented uncertain system linear parameter-varying (LPV). By means of an output-feedback gain-scheduling design, the augmented uncertain LTV system is stabilized. Simulation results illustrate the proposed design method.
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Shiyu Gao, Zhihong Man et Xinghuo Yu. « Stabilization of T-S fuzzy systems using LTV system theory ». Dans Proceedings of the 2003 IEEE International Symposium on Intelligent Control. IEEE, 2003. http://dx.doi.org/10.1109/isic.2003.1253925.

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Maalej, Sonia, Alexandre Kruszewki et Lotfi Belkoura. « Derivative based control for LTV system with unknown parameters ». Dans 2013 European Control Conference (ECC). IEEE, 2013. http://dx.doi.org/10.23919/ecc.2013.6669730.

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Wenle Zhang. « MADALINE neural network with truncated momentum for LTV MIMO system identification ». Dans 2012 24th Chinese Control and Decision Conference (CCDC). IEEE, 2012. http://dx.doi.org/10.1109/ccdc.2012.6244256.

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Liu, Chun-yu, Biao Huang et Qinglin Wang. « Assessment of control system performance with LTV disturbance dynamics : SISO case ». Dans 2009 Joint 48th IEEE Conference on Decision and Control (CDC) and 28th Chinese Control Conference (CCC). IEEE, 2009. http://dx.doi.org/10.1109/cdc.2009.5400153.

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Jugo, J., I. Lizarraga et I. Arredondo. « Nonlinear analysis of an AMB system using harmonic domain LTV models ». Dans 2006 IEEE International Conference on Control Applications. IEEE, 2006. http://dx.doi.org/10.1109/cca.2006.285904.

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Jugo, J., I. Lizarraga et I. Arredondo. « Nonlinear analysis of an AMB system using harmonic domain LTV models ». Dans 2006 IEEE Conference on Computer Aided Control System Design, 2006 IEEE International Conference on Control Applications, 2006 IEEE International Symposium on Intelligent Control. IEEE, 2006. http://dx.doi.org/10.1109/cacsd-cca-isic.2006.4776658.

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Poguntke, Tim, et Karlheinz Ochs. « On the Identification of Piecewise Constant LTV Systems Using a Double Periodic System Model ». Dans 2018 29th Irish Signals and Systems Conference (ISSC). IEEE, 2018. http://dx.doi.org/10.1109/issc.2018.8585342.

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Chen, Yu-zhe, Ming-hua Zhao, Shu-liang Zhao et Yan-jun Wang. « A Customer Intelligence System Based on Improving LTV Model and Data Mining ». Dans 2006 International Conference on Machine Learning and Cybernetics. IEEE, 2006. http://dx.doi.org/10.1109/icmlc.2006.258703.

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Rapports d'organisations sur le sujet "LTV system"

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Baader, Franz, et Marcel Lippmann. Runtime Verification Using a Temporal Description Logic Revisited. Technische Universität Dresden, 2014. http://dx.doi.org/10.25368/2022.203.

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Formulae of linear temporal logic (LTL) can be used to specify (wanted or unwanted) properties of a dynamical system. In model checking, the system’s behaviour is described by a transition system, and one needs to check whether all possible traces of this transition system satisfy the formula. In runtime verification, one observes the actual system behaviour, which at any point in time yields a finite prefix of a trace. The task is then to check whether all continuations of this prefix to a trace satisfy (violate) the formula. More precisely, one wants to construct a monitor, i.e., a finite automaton that receives the finite prefix as input and then gives the right answer based on the state currently reached. In this paper, we extend the known approaches to LTL runtime verification in two directions. First, instead of propositional LTL we use the more expressive temporal logic ALC-LTL, which can use axioms of the Description Logic (DL) ALC instead of propositional variables to describe properties of single states of the system. Second, instead of assuming that the observed system behaviour provides us with complete information about the states of the system, we assume that states are described in an incomplete way by ALC-knowledge bases. We show that also in this setting monitors can effectively be constructed. The (double-exponential) size of the constructed monitors is in fact optimal, and not higher than in the propositional case. As an auxiliary result, we show how to construct Büchi automata for ALC-LTL-formulae, which yields alternative proofs for the known upper bounds of deciding satisfiability in ALC-LTL.
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Borgwardt, Stefan, et Veronika Thost. LTL over EL Axioms. Technische Universität Dresden, 2015. http://dx.doi.org/10.25368/2022.213.

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Aus der Einleitung: Description Logics (DLs) [BCM+07] are popular knowledge representation formalisms, mainly because they are the basis of the standardized OWL 2 Direct Semantics, their expressiveness can be tailored to the application at hand, and many optimized reasoning systems are available.
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Vaidyanathan, P. P. Cyclic LTI Systems in Digital Signal Processing. Fort Belvoir, VA : Defense Technical Information Center, juin 1998. http://dx.doi.org/10.21236/ada349622.

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Vaidyanathan, P. P., et Ahmet Kirac. Cyclic LTI Systems and the Paraunitary Interpolation Problem. Fort Belvoir, VA : Defense Technical Information Center, janvier 1998. http://dx.doi.org/10.21236/ada342273.

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T. Strickler, R. Majeski, R. Kaita, B. LeBlanc. The Thomson Scattering System on the Lithium Tokamak eXperiment (LTX). Office of Scientific and Technical Information (OSTI), juillet 2008. http://dx.doi.org/10.2172/953701.

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Chen, Bosi. Spectrum Regrowth for OFDM-based LTE and WIMAX Systems. Portland State University Library, janvier 2000. http://dx.doi.org/10.15760/etd.601.

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Rao, S. V., M. Mattice, N. Coleman et Jr. Design of Reduced Order LQG/LTR Controllers for Turret-Gun System. Fort Belvoir, VA : Defense Technical Information Center, juillet 1990. http://dx.doi.org/10.21236/ada223671.

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Teo, Justin, et Jonathan P. How. Gradient Projection Anti-windup Scheme on Constrained Planar LTI Systems. Fort Belvoir, VA : Defense Technical Information Center, mars 2010. http://dx.doi.org/10.21236/ada523139.

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Santarelli, Keith R. A switched state feedback law for the stabilization of LTI systems. Office of Scientific and Technical Information (OSTI), septembre 2009. http://dx.doi.org/10.2172/993891.

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Kozumplik, Brian J. Electric Charging Intended Functionality, Availability, and Equity Inclusion. 400 Commonwealth Drive, Warrendale, PA, United States : SAE International, janvier 2023. http://dx.doi.org/10.4271/epr2023001.

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<div class="section abstract"><div class="htmlview paragraph">As unprecedented growth in EV sales is expected, and the number of public charging stations must be planned accordingly as charger up-time and functionality (i.e., availability) is the number one factor for users once the charging system is installed. </div><div class="htmlview paragraph"><b>Electric Vehicle Intended Functionality, Availability, and Equity Inclusion</b> informs current customers and potential purchasers of functionality, availability, and equity inclusion issues with EV charging systems currently in production and in use across North America and Europe. Note that if shortages of available chargers are recognized and exposed across the US, this could then have a negative impact on future potential EV customers from making the “leap” from traditional ICE vehicles to EVs. </div><div class="htmlview paragraph"><a href="https://www.sae.org/publications/edge-research-reports" target="_blank">Click here to access the full SAE EDGE</a><sup>TM</sup><a href="https://www.sae.org/publications/edge-research-reports" target="_blank"> Research Report portfolio.</a></div></div>
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