Dissertations / Theses on the topic 'Sensor parameters'
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Shaun, Ferdous Jahan. "Multi-Parameters Miniature Sensor for Water Network Management." Thesis, Paris Est, 2018. http://www.theses.fr/2018PESC1138/document.
Full textWater is a vital element for every living being on the earth. Like many other dwindling natural resources, clean water faces a strong pressure because of human activity and the rapid growth of global population. The situation is so critical that clean water has been identified as one of the seventeenth sustainable development goals of the United Nations. Under these conditions, a sustainable management of water resources is necessary. For this purpose, a smart solution for water networks monitoring can be very helpful. However, commercially available solutions lack compactness, self-powering capabilities cost competitiveness, necessary to enable the large rollout over water networks. The present thesis takes place in the framework of a European research project, PROTEUS, which addresses these different problems by designing and fabricating a multi-parameter sensor chip (MPSC) for water resources monitoring. The MPSC enables the measurement of 9 physical and chemical parameters, is reconfigurable and self-powered. The present thesis addresses more precisely physical sensors, their design, optimization and co-integration on the MPSC. The developed device exhibits state of the art or larger performances with regard to its redundancy, turn-down ratio and power consumption. The present manuscript is split into two main parts: Part-I and Part-II. Part-I deals with non-thermal aspects of the MPSC, the pressure and conductivity sensor for instance, as well as the fabrication process of the whole device (Chapter 1 and 2). The background of environmental monitoring is presented in Chapter 1 along with the State of Art review. Chapter 2 describes fabrication methods of the MPSC. Preliminary characterization results of non-thermal sensors are also reported in this chapter. Chapter 3 and 4, included in Part-II, deal with thermal sensors (temperature and flow-rate). Chapter 3 describes the many possible uses of electric resistances for sensing applications. Finally, in chapter four, we focus on flowrate sensors before concluding and making a few suggestions for future works
Bergmark, Giesler Linn. "Investigating construction and design parameters of an embroidered resistive pressure sensor." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-26450.
Full textStatz, C., J. Küttner, D. Plettemeier, and Thomas Herlitzius. "SEBIMO - Microwave-based Measurement of Soil Parameters." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-229895.
Full textKailayanathan, Subaharan, and Saji Kamdod. "Development of Generic Communication Middleware for Embedded Sensor Systems Transmitting Health Parameters." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-49017.
Full textChaudhari, Qasim Mahmood. "Estimation of clock parameters and performance benchmarks for synchronization in wireless sensor networks." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2945.
Full textOKUMA, Shigeru, Tatsuya SUZUKI, Takashi MUTOU, and Eiji KONAKA. "Optimal Design of Sensor Parameters in PLC-Based Control System Using Mixed Integer Programming." Institute of Electronics, Information and Communication Engineers, 2005. http://hdl.handle.net/2237/14990.
Full textCao, Huiyi. "Remote Gait Monitoring Mobile System Enabled by Wearable Sensor Technology." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1587042096284549.
Full textBäcklund, Tomas. "Development and validation of a system for clinical assessment of gait cycle parameter in patients with idiopathic normal pressure hydocephalus." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-82891.
Full textAtalay, Ozgur. "Development and investigation of weft knitted strain sensor." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/development-and-investigation-of-weft-knitted-strain-sensor(54fffacb-d1d7-4e9e-9d8f-7f33d4b90d66).html.
Full textLi, Zeyuan. "Target localization using RSS measurements in wireless sensor networks." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31356.
Full textYussof, Hanafiah, Masahiro Ohka, Abdul Rahman Omar, and Muhammad Azmi Ayub. "Determination of Object Stiffness Control Parameters in Robot Manipulation Using a Prototype Optical Three-Axis Tactile Sensor." IEEE, 2008. http://hdl.handle.net/2237/12138.
Full textThomas, George George. "Extraction of Follow up Parameters of Bone Density Microwave Sensor from Post Craniotomy and Lower Extremity Trauma Rehabilitation Measurements." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-348887.
Full textSlovák, Martin. "Monitorování parametrů prostředí v budovách." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218721.
Full textFendri, Ahmed. "Impedimetric Sensor System for Edible Oil Quality Assessment." Universitätsverlag Chemnitz, 2019. https://monarch.qucosa.de/id/qucosa%3A37173.
Full textDie mehrfach wiederholte Verwendung von Frittieröl ist aufgrund der Qualitätsver schlechterung, die während des Erhitzens auftreten durch chemische Reaktionen verursacht wird, gefährlich für die Gesundheit. Die totale polaren Kompon enten und die freien Fettsäuren sind die zwei wichtigsten chemischen Komponenten, die wesentlich durch das Braten beeinflusst werden. Diese Komponenten erhöhen sich signifikant mit der Wiederverwendung von Bratöl und verursachen u. a. ernste Herzkrankheiten. Diese Arbeit zielt darauf hin, ein mobiles, kostengünstiges, einfach zu verwenden des Sensorsystem für die Abschätzung der Ölqualität zu entwickeln. Das System charakterisiert die Veränderung der elektrischen Parameter des Öls durch Messung der Änderung seiner komplexen elektrischen Eigenschaft en. In dieser Arbeit wurde ein Sensorelement mit interdigitalen Elektroden entwickelt, der eine hohe Empfindlichkeit auf die relative Permittivität und die elektrischen Leitfähigkeit des Öls hat und dabei einer hohe Reproduzierbarkeit erzielen kann. Es wird ein Messverfahren vorgeschlagen, das auf der Wandlung in einer Spannung und einer Phasenverschiebung basiert. Sowohl durch theoretische Überlegungen als auch durch Simulationen konnte belegt werden, dass die Kombination beider Metho den eine akkurate Messung der Komplexem Imped anz hochdielektrischer Materia lien ermöglichen kann. Experiment elle Ergebnisse zeige n, dass das Messsystem in der Lage ist , kleine Änderungen der dielektrischen Parameter zu erfassen, die mit den chemischen Ölparamtern stark korrelieren.
Bayram, Alican. "Identification Of Kinematic Parameters Using Pose Measurements And Building A Flexible Interface." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614819/index.pdf.
Full textRuy, Roberto da Silva [UNESP]. "Desenvolvimento e validação geométrica de um sistema para mapeamento com câmeras digitais de médio formato." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/100268.
Full textNos últimos anos observa-se uma crescente utilização de câmaras digitais em Fotogrametria, especialmente os modelos profissionais de câmaras de pequeno e médio formato. Isso porque os sistemas digitais comerciais de grande formato possuem custos elevados e um complexo sistema de gerenciamento, armazenamento e processamento das imagens. Além disso, as câmaras digitais de pequeno e médio formato possuem algumas vantagens que as tornam altamente atrativas, como: grande disponibilidade no mercado; flexibilidade quanto ao intervalo de focalização; são pequenas, leves e de fácil manejo e; possuem custos substancialmente reduzidos quando comparadas aos sistemas digitais de grande formato. Por outro lado, algumas limitações ainda estão presentes nestes modelos de câmaras, no que se refere à confiabilidade da geometria interna e à resolução dos sensores. Contudo, estudos de caso têm mostrado que estes problemas podem ser contornados, podendo-se utilizar todo o potencial deste tipo de sensor para mapeamentos temáticos, topográficos e cadastrais em áreas de pequeno e médio porte, com grande flexibilidade em relação aos sensores aéreos e orbitais convencionais. Neste contexto, este trabalho teve como objetivo a concepção, implementação física e testes reais de um sistema de aquisição de imagens digitais, formado por câmaras digitais de médio formato integradas a sensores de orientação direta, dispositivos eletrônicos e interfaces de hardware e software. Foram desenvolvidos também estudos, análises, algoritmos e programas computacionais de Fototriangulação com parâmetros adicionais (FPA), com dados de georreferenciamento direto, voltados ao sistema desenvolvido...
In the last years there is a growing use of digital cameras in Photogrammetry, mainly the small and medium format cameras, because of high cost and problems with the images management and postprocessing in the high end digital cameras. Besides, if the small and medium format cameras are calibrated they can provide quality data, together with their advantages: variety in the market; focalization flexibility; are small, light, easy handling and; have low cost if compared with the high resolution cameras. Although, these models of digital cameras have some limitations, like the interior orientation reliability and the resolution of the sensor. Some case studies have showed that these problems can be solved and the digital sensors can be used with success in thematic, topographic and cadastral mapping of small and medium areas, with high flexibility if compared with conventional aerial and orbital sensors. In this context, the aim of this work is the conception, development and real tests performing of a digital image acquisition system composed by medium format digital cameras integrated to direct orientation systems, electronic devices and hardware and software developments. Studies, analysis and computational programs related to block triangulation with additional parameters with direct orientation data were performed for establishing the interior orientation of the cameras that compose the acquisition system... (Complete abstract click electronic access below)
Slováková, Kristína. "Studium ochranných vlastností fóliových a nánosovaných materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216474.
Full textAbdelzaher, Ahmed F. "Identifying Parameters for Robust Network Growth using Attachment Kernels: A case study on directed and undirected networks." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4481.
Full textEinloft, Diego. "Projeto automático de controlador de velocidade sem sensor mecânico para motores de indução trifásicos." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/8456.
Full textThis works proposes parameters estimation algorithm to auto-tune the control laws of a speed sensorless servo. The identification process of the electrical and mechanical parameters is based on recursive least squares method (RLS) and utilizes just measured stator currents. The electrical parameters are obtained by the transfer function of the motor with locked rotor. Hence, this eliminates the need to realize classical tests for the electrical parameters obtention and impose robustness to the controller for parameters variations caused by aging of materials. Thus, the electrical parameters are used to project the current controllers and the rotor speed is estimated by a model reference adaptive systems (MRAS). The structure of MRAS is composed by two systems (reference model and adaptive system) based on instantaneous reactive power and using an adaptation mechanism. On the other hand, to obtain a robust control when the system is subject to disturbances or load s variations, mechanical parameters are identified using estimated rotor speed and mechanical model of the induction motor (IM). Finally, for the speed control is used a proportional plus integral controller (PI) self-tuned through the estimated inertia.
Este trabalho propõe um algoritmo de identificação paramétrica para auto-ajuste da lei de controle de um servo de velocidade sem sensor mecânico. O processo de identificação dos parâmetros elétricos e mecânicos do servo é baseado em algoritmos do tipo mínimos quadrados recursivo (RLS) e utiliza apenas as medidas das correntes estatóricas. Os parâmetros elétricos são identificados através da função de transferência do motor com rotor bloqueado. Isso elimina a necessidade de realizar ensaios clássicos para obtenção dos parâmetros elétricos e impõe robustez ao controlador frente a variações paramétricas que ocorrem devido aos desgastes e envelhecimento dos materiais que constituem o motor. Uma vez identificados, os parâmetros elétricos são utilizados no projeto dos controladores de corrente e a velocidade rotórica é estimada utilizando um sistema adaptativo por modelo de referência (MRAS). A estrutura do MRAS é composta por dois sistemas (modelo de referência e sistema adaptativo) baseados na potência reativa instantânea e utiliza um mecanismo de adaptação. Por outro lado, para impor robustez ao controlador frente a variações de carga, os parâmetros mecânicos são identificados a partir da velocidade rotórica estimada e do modelo mecânico do motor de indução (MI). Finalmente, para o controle de velocidade é usado um controlador proporcional e integral (PI) com seus ganhos sintonizados a partir da inércia estimada.
Ruy, Roberto da Silva. "Desenvolvimento e validação geométrica de um sistema para mapeamento com câmeras digitais de médio formato /." Presidente Prudente : [s.n.], 2008. http://hdl.handle.net/11449/100268.
Full textBanca: Edson Aparecido Mitishita
Banca: Jorge Luis Nunes e Silva Brito
Banca: Julio Kiyoshi Hasegawa
Banca: Mauricio Galo
Resumo: Nos últimos anos observa-se uma crescente utilização de câmaras digitais em Fotogrametria, especialmente os modelos profissionais de câmaras de pequeno e médio formato. Isso porque os sistemas digitais comerciais de grande formato possuem custos elevados e um complexo sistema de gerenciamento, armazenamento e processamento das imagens. Além disso, as câmaras digitais de pequeno e médio formato possuem algumas vantagens que as tornam altamente atrativas, como: grande disponibilidade no mercado; flexibilidade quanto ao intervalo de focalização; são pequenas, leves e de fácil manejo e; possuem custos substancialmente reduzidos quando comparadas aos sistemas digitais de grande formato. Por outro lado, algumas limitações ainda estão presentes nestes modelos de câmaras, no que se refere à confiabilidade da geometria interna e à resolução dos sensores. Contudo, estudos de caso têm mostrado que estes problemas podem ser contornados, podendo-se utilizar todo o potencial deste tipo de sensor para mapeamentos temáticos, topográficos e cadastrais em áreas de pequeno e médio porte, com grande flexibilidade em relação aos sensores aéreos e orbitais convencionais. Neste contexto, este trabalho teve como objetivo a concepção, implementação física e testes reais de um sistema de aquisição de imagens digitais, formado por câmaras digitais de médio formato integradas a sensores de orientação direta, dispositivos eletrônicos e interfaces de hardware e software. Foram desenvolvidos também estudos, análises, algoritmos e programas computacionais de Fototriangulação com parâmetros adicionais (FPA), com dados de georreferenciamento direto, voltados ao sistema desenvolvido... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: In the last years there is a growing use of digital cameras in Photogrammetry, mainly the small and medium format cameras, because of high cost and problems with the images management and postprocessing in the high end digital cameras. Besides, if the small and medium format cameras are calibrated they can provide quality data, together with their advantages: variety in the market; focalization flexibility; are small, light, easy handling and; have low cost if compared with the high resolution cameras. Although, these models of digital cameras have some limitations, like the interior orientation reliability and the resolution of the sensor. Some case studies have showed that these problems can be solved and the digital sensors can be used with success in thematic, topographic and cadastral mapping of small and medium areas, with high flexibility if compared with conventional aerial and orbital sensors. In this context, the aim of this work is the conception, development and real tests performing of a digital image acquisition system composed by medium format digital cameras integrated to direct orientation systems, electronic devices and hardware and software developments. Studies, analysis and computational programs related to block triangulation with additional parameters with direct orientation data were performed for establishing the interior orientation of the cameras that compose the acquisition system... (Complete abstract click electronic access below)
Doutor
Reinecke, Sebastian Felix. "Instrumentierte Strömungsfolger zur Prozessdiagnose in gerührten Fermentern." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-137598.
Full textDurante, Gabriel. "Desenvolvimento de uma rede de sensores sem fio para processamento de sinais acústicos marinhos." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-12112018-084935/.
Full textThe increasing interest in the characterization of marine acoustic parameters needs electronic devices that allow capture, store, process, and diffuse data. Current equipment that provides data about the marine life and allow the study of human influences on it have high cost and work isolated, that is, without communication with other devices, which makes it difficult to monitor events in real time. Therefore, this work revises the necessary features to establish a high reliability wireless sensor network (WSN) by applying the concept of Internet of Things (IoT). The protocols MQTT-SN and CoAP are compared with simulation tools and a network is implemented to sense acoustic signals, composed by three autonomous sensor nodes and a gateway using the protocol 6LowPAN. The translation for the IPV4 protocol in the gateway is also implemented, so the operation of the sensor network can be monitored by a remote server on the Internet in real time. The performance of the network is evaluated in relation to power autonomy, memory capacity, reach and reliability. The autonomous sensor nodes can operate uninterrupted, with use of batteries, for approximately 125 hours with 48GB storage for recording and approximately 100m range. Finally, data pre-processing is implemented in order to detect aquatic acoustic events.
Nguyen, Van Tri. "Adjoint-based approach for estimation & sensor location on 1D hyperbolic systems with applications in hydrology & traffic." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT063/document.
Full textThe thesis proposes a general framework for both state/parameters estimation and sensor placement in nonlinear infinite dimensional hyperbolic systems. The work is therefore divided into two main parts: a first part devoted to the optimal estimation and a second one to optimal sensor location. The estimation method is based on the calculus of variations and the use of Lagrange multipliers. The Lagrange multipliers play an important role in giving access to the sensitivities of the measurements with respect to the variables to be estimated. These sensitivities, described by the adjoint equations, are also the key idea of a new approach, so-called the adjoint-based approach, for the optimal sensor placement. Various examples, either based on some simulations with synthetic measurements or real data sets and for different scenarios, are also studied to illustrate the effectiveness of the developed approaches. Theses examples concern the overland flow systems and the traffic flow, which are both governed by nonlinear hyperbolic partial differential equations
Bandarupalli, Sowmya. "Vehicle detection and tracking using wireless sensors and video cameras." ScholarWorks@UNO, 2009. http://scholarworks.uno.edu/td/989.
Full textHedric, Andrew C. "Dynamic Behaviors of Historical Wrought Iron Truss Bridges – a Field Testing Case Study." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822751/.
Full textCarotenuto, Adriano Roberto da Silva. "Comparação da reatividade de carvões em reatores ciclônicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/79848.
Full textA novel laboratory facility designed to investigate coal oxy-fuel combustion is described in the present work. A cyclone chamber allows for the combustion of low-rank coal under turbulent conditions and swirling flows, covering a temperature range similar to those found on practical furnaces. A potentiometric oxygen sensor with oxide-ion conducting solid electrolytes, as stabilized zirconia, installed within the cyclone reactor, is used to measure the oxygen consumption during the combustion of coal samples. High ash coals samples, from Leão and Bonito mining sites located in South Brazil, and pre-dried lignite coal samples (LTBK), from the Lusatian region, in Germany, were burned under air and oxy-fuel (O2/CO2/H2O) atmospheres. Experiments were carried out at three average gas combustion temperatures: 1073, 1173 and 1273 K. For LTBK coal, oxy-fuel combustion was composed with two O2/CO2 atmospheres (21/79 and 30/70) and three O2/CO2/H2O atmospheres (30/60/10, 30/50/20 and 30/40/30) in molar basis, whereas for Leão and Bonito coals, the oxy-fuel combustion was composed with two O2/CO2 atmospheres (21/79 and 30/70). Coal samples were sieved to a size range of 1250 to 2000 μm and 125 to 500 μm and with 1g and 3g. In addition, char samples from Leão and lignite coals were prepared in order to investigate the combustion behavior of its carbon matrix for different levels of volatile matter. The investigation of coal combustion behavior is made firstly directly on the oxygen concentration curves measured for LTBK coal samples burned under air and oxy-fuel atmospheres with water vapor, as detailed in Chapter 2 of this thesis. However, due to the great number of experiments performed and the need to understand the influence of the factors, as temperature and atmosphere compositions, and the interactions between them on the coal combustion, the Design of Experiments (DoE) analysis is applied in the laboratory test facility, as developed in Chapter 3. The reactivity of low rank coals is assessed by means of global kinetic parameters and of char combustion reaction coefficients, under assumption of a well stirred reactor to be tested along the investigation, as described in Chapter 4. From the analysis of oxygen concentration curves (Chapter 2 and 3), results show that oxidizer oxy-fuel atmosphere with 79% CO2 (21/79, O2/CO2) increases the oxygen consumption for high ash coals, Bonito and Leão, and for pre-dried lignite coal, LTBK, due to the influence of CO2 gasification reaction on their coal combustion reactions from gas combustion temperatures higher than 1073 K. From the analysis of global kinetic parameters calculated to assess the coal reactivity, the results show that the hypothesis of a well stirred reactor is not enough to capture the kinetic involved in coal combustion burned in batch mode within the cyclone reactor. The coal reactivity investigated with the effective reaction rate constants for different oxidizer atmospheres, gas combustion temperatures, particle diameters, sample masses and oxygen sensor position, is influenced by the swirling flow with its advective and diffusive terms.
Lichvár, Michal. "Detekce živosti prstu na základě změn papilárních linií." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-236005.
Full textFrancoforte, Kevin. "PARAMETER ESTIMATION USING SENSOR FUSION AND MODEL UPDATING." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4154.
Full textM.S.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering MS
Jin, Xiaodan. "Poisson Approximation to Image Sensor Noise." University of Dayton / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1292306911.
Full textUnver, Alper. "Determination Of Stochastic Model Parameters Of Inertial Sensors." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615548/index.pdf.
Full textnver, Alper PhD, Department of Electric Electronic Engineering Supervisor: Prof. Dr. Mü
beccel Demirekler January 2013, 82 pages Gyro and accelerometer systematic errors due to biases, scale factors, and misalignments can be compensated via an on-board Kalman filtering approach in a Navigation System. On the other hand, sensor random noise sources such as Quantization Noise (QN), Angular Random Walk (ARW), Flicker Noise (FN), and Rate Random Walk (RRW) are not easily estimated by an on-board filter, due to their random characteristics. In this thesis a new method based on the variance of difference sequences is proposed to compute the powers of the above mentioned noise sources. The method is capable of online or offline estimation of stochastic model parameters of the inertial sensors. Our aim in this study is the estimation of ARW, FN and RRW parameters besides the quantization and the Gauss-Markov noise parameters of the inertial sensors. The proposed method is tested both on the simulated and the real sensor data and the results are compared with the Allan variance method. Comparison shows very satisfactory results for the performance of the method. Computational load of the new method is less than the computational load of the Allan variance on the order of tens. One of the usages of this method is the individual noise characterization. A noise, whose power spectral density has a constant slope, can be identified accurately by the proposed method. In addition to this, the parameters of the GM noise can also be determined. Another idea developed here is to approximate the overall error source as a combination of ARW and some number of GM sources only. The reasons of selecting such a structure is the feasibility of using these models in a Kalman filter framework for error propagation as well as their generality of modeling other noise sources.
Simoes, Mario Alves. "Feasibility of Wearable Sensors to Determine Gait Parameters." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3346.
Full textYu, Jia. "Distributed parameter and state estimation for wireless sensor networks." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28929.
Full textHoffman, Samuel Chase. "Automotive Suspension Parameter Estimation Using Smart Wireless Sensor Technology." DigitalCommons@CalPoly, 2008. https://digitalcommons.calpoly.edu/theses/20.
Full textВоробйов, Владислав Євгенійович. "Оптичні рідкокристалічні сенсори." Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/35117.
Full textThesis is devoted to improving the efficiency of one of the main executive elements of electronics. Introduction to the main characteristics of sessors. Analysis of ways to optimize the technical parameters of liquid crystal pressure gradient sensors. Analysis of liquid crystal sensors of acceleration, vibration and inclusion. The paper considers many types of sensors and prefers the optical liquid crystal sensor due to the easy unification of its construction and widespread use in the home. Using the properties of liquid crystal materials, it was possible to achieve extremely sensitive sensing sensors.
Liu, Mengmei. "Target Tracking with Binary Sensor Networks." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/14.
Full textFraleigh, Lisa Marie. "Optimal sensor selection and parameter estimation for real-time optimization." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ40050.pdf.
Full textHoffman, Samuel Chase Ridgely John Robert. "Automotive suspension parameter estimation using smart wireless sensor technology : a thesis /." [San Luis Obispo, Calif. : California Polytechnic State University], 2008. http://digitalcommons.calpoly.edu/theses/20/.
Full text"May 2008." "In partial fulfillment of the requirements for the degree [of] Master of Science in Mechanical Engineering." "Presented to the faculty of California Polytechnic State University, San Luis Obispo." Major professor: John Ridgely, Ph.D. Accompanying CD-ROMs contain software files. Includes bibliographical references (leaf 61). Also available online and on microfiche (2 sheets).
Gunnam, Kiran Kumar. "A DSP embedded optical naviagtion system." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969/13.
Full textJohansson, Tobias. "Virtual Sensors for Combustion Parameters Based on In-Cylinder Pressure." Thesis, Linköpings universitet, Fordonssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-123490.
Full textDasgupta, Kaushani. "Parameter Estimation Using Consensus Building Strategies with Application to Sensor Networks." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc407815/.
Full textYU, JINSONG. "Development of Microfabricated Electrochemical Sensors for Environmental Parameter Measurements Applicable to Corrosion Evaluation and Gaseous Oxygen Detection." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1206981091.
Full textFletcher, R. P. "Statistical inversion of surface parameters from ATSR-2 satellite observations." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267415.
Full textKristensson, Martin. "On parameter estimation in wireless communications, sensor array processing and spectral analysis." Doctoral thesis, Stockholm, 1998. http://www.lib.kth.se/abs98/kris1216.pdf.
Full textReina, Gerard J. "AUV dive control system development including sensor bias compensation and parameter estimation." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/22925.
Full textThe U.S. Navy and a number of its contractors are presently developing unmanned miniature submarines for several vital underwater missions. These include surveillance, submarine tracking, and bottom mapping. Foregoing Research at NPS produced a "testbed" as a research platform for demonstrating the performance of AUVs. Combining the power of an IBM PC/AT in conjunction with a high level programming language, a state space dive control system was developed and instituted for the 30 inch AUV model. Paramter Estimation using a Recursive Least Squares Fit scheme and a State Observer were incorporated in the controller. Procedures dealing with hardware/software interfacing, AUV simulation analysis, and computation speed of large programming code were investigated.
http://archive.org/details/auvdivecontrolsy00rein
Lieutenant, United States Navy
Moustafa, Ahmed. "Deducing water parameters in rivers via statistical modelling." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9095.
Full textSallinen, Mikko. "Modelling and estimation of spatial relationships in sensor-based robot workcells /." Espoo [Finland] : VTT Technical Research Centre of Finland, 2003. http://www.vtt.fi/inf/pdf/publications/2003/P509.pdf.
Full textFeng, Chao. "GREY-MODEL BASED ICE PREDICTION SENSOR SYSTEM ON WIND TURBINE SYSTEM." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1323893527.
Full textMamishev, Alexander V. 1974. "Interdigital dielectrometry sensor design and parameter estimation algorithms for non-destructive materials evaluation." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/16729.
Full textVita.
Includes bibliographical references (v. 2, p. 677-704).
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
The major objective of this thesis is to develop instrumentation and parameter estimation algorithms for nondestructive measurement of non-homogeneous material property profiles with fringing electric field dielectrometry sensors. The instrumentation includes interdigital sensors and sensor arrays, other types of fringing field sensors, electronic circuit boards for measurement of sensor signals, and mechanical setups for specific applications. The parameter estimation algorithms require solving forward and inverse problems of material property estimation. The forward problem implies calculation of the sensor admittance matrix as a function of geometry and material properties. The inverse problem, inherently more difficult than the forward problem, implies estimation of unknown geometry and material properties based on known properties and measured entries of the sensor admittance matrix. The developed instrumentation and algorithms are applied to practical problems which include mo++
nitoring of moisture dynamics in transformer pressboard, evaluation of the saturation state of chemical garments, detection of flaws in fiberglass flywheels, and detection of buried metal and plastic landmines. The design strategy and fabrication practices are described for multiple penetration depth interdigital sensors designed for measurement of conductivity and permittivity of electrical insulation of power transformers. An extensive overview of interdigital electrode technology in other fields is given. A number of disturbance parameters that affect interdigital dielectrometry measurements is characterized and either eliminated or accounted for using empirical, analytical, and numerical simulation approaches. A new type of fringing field sensor has been developed to improve the cross-correlation between different fringing field patterns. In most cases, the forward problem has been solved using commercial finite-element software "Maxwell" by Ansoft Corp. Other methods, such as a co++
ntinuum model, analytical expressions, and direct calibration were used for comparison and to achieve greater accuracy in simple cases. A family of algorithms for solving inverse problems has been developed to address different applications.
(cont.) No single algorithm provides the most accurate and reliable results in all cases. The most appropriate algorithm for each given application should be chosen on the basis of required speed and accuracy, number of known and unknown parameters, type of distribution of material properties, contact conditions between the sensor head and the material, and a specific type of sensor selected for the task. Major types of property estimation algorithms include direct calibration; use of empirically and numerically determined approximations; use of pre-computed lookup tables; iterative guesses at dielectric and geometry properties while solving the minimization problem of matching theoretical and measured entries of sensor admittance matrix; direct mapping between the sensor output and the physical variable of interest (not necessarily a dielectric property);
(cont.) pattern recognition in the dielectric spectroscopy signature; and search for signal characteristics in the sensor output due to material property variations. Each of these major types of algorithms has been implemented in one or more forms to achieve the desired results for each specific problem. One of the algorithmic approaches has been generalized to other types of problemsby implementing it as a generic optimization tool. Moisture dynamics in transformer pressboard has been studied extensively with numerical simulations of the forward and inverse problem. The developed algorithm has been applied to experimental dataobtained by another graduate student, Yanqing Du, in a concurrent Ph.D. thesis. It has been demonstrated that a three-wavelength interdigital sensor can be used to measure time-dependent continuous smoothly varying moisture profiles in oil-impregnated power transformer pressboard. Ultimately, this technology is capable of preventing partial discharges and transformer failures due to flow electrification and static charging of the oil-pressboard interface. Preliminary measurements also demonstrated adequate sensitivity and selectivity of fringing field sensors for the detection of flaws in fiberglass flywheels and detection and discrimination of buried plastic and metal landmines. The saturation state of chemical protective garments hasbeen determined for relatively high levels of saturation. Additional work is needed to improve sensitivity in the low saturation region.
by Alexander V. Mamishev.
Ph.D.
Lee, Shira M. (Shira Miriam). "Finite element simulation and parameter optimization of a flexible tactile pressure sensor array." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32948.
Full textIncludes bibliographical references.
A finite element model was developed to optimize design of a flexible tactile sensor. The sensor consists of layers of thin-film copper and PDMS, and the model can be used to determine the effects on sensor sensitivity and durability of variations in material properties and geometry. The model was used to study the effect of variations in copper thickness. Four copper thicknesses, 0.3[mu]m, 0.5[mu]m, 3[mu]m, and 9[mu]m, were analyzed under a range of pressure loads. The thickness of the copper affected both the stress in the material and the displacement of the copper when a pressure load was applied to the sensor model. The stress in the sensor was highest for 3[mu]m copper, potentially causing decreased durability in this sensor. The separation between the copper strips beneath the pressure load was highest for 9[mu]m copper, so this sensor may have lower accuracy for small loads. Thin copper strips are challenging to manufacture, so the largest but most accurate and durable copper strip thickness, 0.5[mu]m, is recommended from this analysis.
by Shira M. Lee.
S.B.
Furness, Charles Zachary. "Parameter identification of a flexible beam using a modal domain optical fiber sensor." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/42058.
Full textAn optical fiber sensor is used for identification of a cantilevered beam under conditions of various concentrated mass loadings. A model of the sensor as well as the dynamic system is developed and used to test the reliability of the identification. Input/output data from an experiment is gathered and used in the identification. A survey of the existing areas of damage detection and parameter identification is included, along with suggestions for incorporating fiber optic sensors into existing techniques. The goal of this research was to show that the fiber sensor can be used for identification purposes, and that it is sensitive to parameter changes within the system (in this case concentrated mass changes).
Master of Science