Tesi sul tema "Nonlinear Control"
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Manchanda, Sunil. "Nonlinear process control". Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336269.
Testo completoSriniwas, Ganti Ravi. "Nonlinear model predictive control". Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/10267.
Testo completoRysdyk, Rolf T. "Adaptive nonlinear flight control". Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/12108.
Testo completoFahmy, Sherif Farid Fahmy. "Nonlinear robust H∞ control". Thesis, University of Sheffield, 2006. http://etheses.whiterose.ac.uk/14887/.
Testo completoNevistić, Vesna. "Constrained control of nonlinear systems". Online version, 1997. http://bibpurl.oclc.org/web/26200.
Testo completoRutherford, Simon John. "Modelling driver nonlinear steering control". Thesis, University of Cambridge, 2007. https://www.repository.cam.ac.uk/handle/1810/252062.
Testo completoTatlicioglu, Enver. "Control of nonlinear mechatronic systems". Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1193079994/.
Testo completoGrönberg, Fredrik. "Crowd Control of Nonlinear Systems". Thesis, KTH, Reglerteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-138438.
Testo completoRong, Q. "Multiple-model based nonlinear control". Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412562.
Testo completoSamavat, Mohmoud. "Robust control of nonlinear systems". Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327647.
Testo completoWlassich, John J. (John James). "Nonlinear force feedback impedance control". Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/15032.
Testo completoBedrossian, Nazareth Sarkis. "Nonlinear control using linearizing transformations". Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/27998.
Testo completoAshour, Osama Naim. "Nonlinear Control of Plate Vibrations". Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/26266.
Testo completoPh. D.
Niemoczynski, Bogdan. "Nonlinear Control of Magnetic Signatures". Master's thesis, Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/360321.
Testo completoM.S.E.E.
Magnetic properties of ferrite structures are known to cause fluctuations in Earth's magnetic field around the object. These fluctuations are known as the object's magnetic signature and are unique based on the object's geometry and material. It is a common practice to neutralize magnetic signatures periodically after certain time intervals, however there is a growing interest to develop real time degaussing systems for various applications. Development of real time degaussing system is a challenging problem because of magnetic hysteresis and difficulties in measurement or estimation of near-field flux data. The goal of this research is to develop a real time feedback control system that can be used to minimize magnetic signatures for ferrite structures. Experimental work on controlling the magnetic signature of a cylindrical steel shell structure with a magnetic disturbance provided evidence that the control process substantially increased the interior magnetic flux. This means near field estimation using interior sensor data is likely to be inaccurate. Follow up numerical work for rectangular and cylindrical cross sections investigated variations in shell wall flux density under a variety of ambient excitation and applied disturbances. Results showed magnetic disturbances could corrupt interior sensor data and magnetic shielding due to the shell walls makes the interior very sensitive to noise. The magnetic flux inside the shell wall showed little variation due to inner disturbances and its high base value makes it less susceptible to noise. This research proceeds to describe a nonlinear controller to use the shell wall data as an input. A nonlinear plant model of magnetics is developed using a constant to represent domain rotation lag and a gain function to describe the magnetic hysteresis curve for the shell wall. The model is justified by producing hysteresis curves for multiple materials, matching experimental data using a particle swarm algorithm, and observing frequency effects. The plant model is used in a feedback controller and simulated for different materials as a proof of concept.
Temple University--Theses
Abbaspour, Ali Reza. "Active Fault-Tolerant Control Design for Nonlinear Systems". FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3917.
Testo completoAli, Imran. "Spacecraft nonlinear attitude control with bounded control input". Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1717/.
Testo completoSavvidis, Petros. "Nonlinear control : an LPV nonlinear predictive generalised minimum variance perspective". Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27947.
Testo completoPimentel, Guilherme Araujo. "Nonlinear Modeling, Identification and Control of Membrane Bioreactors". Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS219/document.
Testo completoThis thesis proposes a simple submerge membrane bioreactor (sMBR) dynamic model that comprises physical and biological process behaviors. The filtration, physical aspect, is a resistance-in-series model that is composed with reversible resistance, linked to sludge cake formation process that can be detached by air scouring, and the irreversible fouling resistance. The biological feature is implemented extending the simple chemostat model to the filtration mechanism. The model asymptotic analysis, observability, controllability and fast and slow dynamic study are carried out. The latter, based on the Tikhonov's theorem, reveals the possibility to simplify model dynamics by decoupling the process in three time scales, i.e. long-term fouling evolution (slow dynamic), biological degradation (fast dynamic) and fouling cake formation (ultrafast dynamic). As sMBR processes are relativity new, real process data are scarce. Thus, a recirculating aquaculture system pilot plant with an sMBR is design, build and automated. Process online measurements such as: temperature, total suspended solids (TSS), ammonia and nitrate effluent concentrations, air cross- and effluent flow rates and trans-membrane pressure are gathered in other to validate the proposed model. To evidence the model general framework the same model is confronted with real data sets obtained from an sMBR wastewater treatment plant. Therefore, a parameter identification is organized in three steps corresponding to the three time scales obtained from the analytical analysis. The parameter identification is implemented using a weighted least-squares cost function and the inverse of the Fisher Information Matrix (FIM), which is used to obtain the parameters confidence intervals, is computed by a lower bound on the covariance matrix of the parameter estimates. The model capacity to predict trans-membrane pressure and biological degradation is proved by model validation and cross-validation results, in which an accurate correlation coefficients (R^2) of approximately 0.83 are obtained. Concerning the process control, two different approach are used: a partial-linearizing feedback Lyapunov controller is designed in order to stabilize the fouling production by actuating in the air cross- and effluent flows; and a nonlinear model predictive control (NMPC) is implemented in other to optimize the effluent production rate and maximize the period between two chemical cleaning procedures. The results included in this thesis show the importance of analytical model studies in order to process cognition and model simplification. Another important point is the simple dynamic model structure, with a small quantity of the parameters, which is adequate to implement advanced control strategies on sMBR processes and, similarly, to predict biological degradation and fouling build-up dynamics
Cheung, Wan Sup. "Identification, stabilisation and control of nonlinear systems using neural network-based parametric nonlinear modelling". Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333732.
Testo completoLi, Liangmin. "Continuous time nonlinear system identification". Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341867.
Testo completoWellman, Brandon. "Root Locus Techniques With Nonlinear Gain Parameterization". UKnowledge, 2012. http://uknowledge.uky.edu/me_etds/21.
Testo completoZhang, Guoming. "Model reference control for nonlinear plants". Thesis, University of Manchester, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314208.
Testo completoNoiey, A. Ranjbar. "Sensorless nonlinear control of asynchronous machines". Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/844099/.
Testo completoAshman, J. A. "Adaptive control of uncertain nonlinear systems". Thesis, University of Bath, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260256.
Testo completoTshemese, Nomzamo. "Design and PLC implementation of nonlinear PID cControllers for control of nonlinear processes". Thesis, Cape Peninsula University of Technology, 2014. http://hdl.handle.net/20.500.11838/1180.
Testo completoA new control strategy for control of the nonlinear process of Dissolved Oxygen (DO) concentration in the aerobic tank of wastewater treatment process is proposed. It provides means to improve the performance of the Linear Proportional Integration and Derivative (LPID) controller by extending it to a Nonlinear Proportional Integration and Derivative (NLPID) controller. The aim of the thesis is to develop methods, algorithms and software for design, simulation, and programmable logic controller (PLC) implementation of NLPID controllers in order to control the nonlinear process of dissolved oxygen. The thesis investigates the possibilities the widely used in theory and industry methods for the design of the LPID controllers for linear processes as Ziegler- Nichols and Pole Placement, to be applied to the design of NLPID controllers for the nonlinear process of DO concentration. Three cases are considered: Case 1: Application of the values of the parameters the linear PID controller designed by the Ziegler-Niched method for the linearized DO process model to be used as parameters of the nonlinear PID controllers to control the DO nonlinear process. Case 2: Application of the values of the parameters of the linear PID controller designed by the Pole placement method for the linearized DO process model, to be used as parameters of the nonlinear PID controller to control the nonlinear DO process. Case 3: Novel, proposed in the thesis, method based on the Pole placement method for direct design of the parameters of the linear and nonlinear PID controllers to control the nonlinear DO process. Software is developed to simulate in MATLAB environment the behavior of the closed loop DO process for the considered cases of controller designs. The results of the simulations show that in the Case1 and the Case 2 it is not possible to use the values of the LPID controller parameters designed for the linearized DO process, directly to control the nonlinear process by the NPID controllers. Additional tuning for some of the parameters is needed. The simulation in the Case 3 shows the excellent behaviors of the closed loop system for all linear and nonlinear PID controllers which prove that the new method is effective and applicable. Real-time simulations of the closed loop system are done in a TwinCAT 3 simulation environment of the Bechkoff EX5020 PLC. The deliverables of the thesis are applicable to many type nonlinear processes in chemical, manufacturing, and other industries.
Tjønnås, Johannes. "Nonlinear and Adaptive Dynamic Control Allocation". Doctoral thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2320.
Testo completoThis work addresses the control allocation problem for a nonlinear over-actuated time-varying system where parameters a¢ ne in the actuator dynamics and actuator force model may be assumed unknown. Instead of optimizing the control allocation at each time instant, a dynamic approach is considered by constructing update-laws that represent asymptotically optimal allocation search and adaptation. A previous result on uniform global asymptotic stability (UGAS) of the equilibrium of cascaded time-varying systems, is in the thesis shown to also hold for closed (not necessarily compact) sets composed by set-stable subsystems of a cascade. In view of this result, the optimal control allocation approach is studied by using Lyapunov analysis for cascaded set-stable systems, and uniform global/local asymptotic stability is guaranteed for the sets described by; the system dynamics, the optimizing allocation update-law and the adaptive update-law.
The performance of the proposed control allocation scheme is demon- strated throughout the thesis by simulations of a scaled-model ship manoeuvred at low-speed. Furthermore, the application of a yaw stabilization scheme for an automotive vehicle is presented. The stabilization strategy consists of; a high level module that deals with the vehicle motion control objective (yaw rate reference generation and tracking), a low level module that handles the braking control for each wheel (longitudinal slip control and maximal tyre road friction parameter estimation) and an intermediate level dynamic control allocation module. The control allocation module generates longitudinal slip reference for the low level brake controller and commands front wheel steering angle corrections, such that the actual torque about the yaw axis tends to the desired torque calculated by the high level module. The conditions for uniform asymptotic stability are given and the scheme has been implemented in a realistic nonlinear multi-body vehicle simulation environment. The simulation cases show that the control strategy stabilizes the vehicle in extreme manoeuvres where the nonlinear vehicle yaw dynamics otherwise become unstable in the sense of over- or understeering.
Karagiannis, Dimitrios. "Nonlinear adaptive control design with applications". Thesis, Imperial College London, 2005. http://hdl.handle.net/10044/1/8320.
Testo completoAli, Shaaban Aerospace Civil & Mechanical Engineering Australian Defence Force Academy UNSW. "Intelligent adaptive control for nonlinear applications". Awarded by:University of New South Wales - Australian Defence Force Academy, 2008. http://handle.unsw.edu.au/1959.4/39185.
Testo completoLemch, Ekaterina S. "Nonlinear and hierarchical hybrid control systems". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0032/NQ64600.pdf.
Testo completoMaalouf, Elie. "Nonlinear control of wheeled mobile robots". Mémoire, Montréal : École de technologie supérieure, 2005. http://wwwlib.umi.com/cr/etsmtl/fullcit?pMR06031.
Testo completo"Thesis presented to École de technologie supérieure as a partial requirement to obtain a masters in electrical engineering". Bibliogr.: f. [140]-142. Également disponible en version électronique.
Nath, Nitendra. "Nonlinear control techniques for robot manipulators". Connect to this title online, 2006. http://etd.lib.clemson.edu/documents/1173994815/.
Testo completoKim, Byoung Soo. "Nonlinear flight control using neural networks". Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/12242.
Testo completoChryssochoos, Ioannis. "Optimization based control of nonlinear systems". Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399165.
Testo completoZhu, Quan Min. "Identification & control of nonlinear systems". Thesis, University of Warwick, 1989. http://wrap.warwick.ac.uk/62723/.
Testo completoYoussef, Ahmed Medhat Mohamed. "Nonlinear predictive flight control system design". Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401502.
Testo completoBekit, Biniam Weldai. "Robust nonlinear control of robot manipulators". Thesis, King's College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321945.
Testo completoAlrashidi, Azizah. "Nonlinear control for non-Newtonian flows". Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5777/.
Testo completoSanders, Seth Robert. "Nonlinear control of switching power converters". Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14426.
Testo completoGao, Yang. "Adaptive fuzzy control of nonlinear systems". Mémoire, Université de Sherbrooke, 2006. http://savoirs.usherbrooke.ca/handle/11143/1335.
Testo completoGilbert, James Michael. "Nonlinear control of an industrial robot". Thesis, University of Hull, 1989. http://hydra.hull.ac.uk/resources/hull:11077.
Testo completoSangelaji, Zahra. "Angular representations of nonlinear control systems". Thesis, University of Sheffield, 2005. http://etheses.whiterose.ac.uk/14880/.
Testo completoBando, Mai. "Nonlinear Adaptive Control and Its Applications". 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/57268.
Testo completoKyoto University (京都大学)
0048
新制・課程博士
博士(工学)
甲第13819号
工博第2923号
新制||工||1432(附属図書館)
26035
UT51-2008-C735
京都大学大学院工学研究科航空宇宙工学専攻
(主査)教授 市川 朗, 教授 椹木 哲夫, 教授 松久 寛
学位規則第4条第1項該当
Chudoung, Jerawan. "Robust Control for Hybrid, Nonlinear Systems". Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/26983.
Testo completoPh. D.
Siller-Alcalá, Irma Irasema. "Nonlinear continuous-time generalised predictive control". Thesis, University of Glasgow, 1998. http://theses.gla.ac.uk/2090/.
Testo completoZhu, Jinghao. "Some results on nonlinear optimal control". Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-10042006-143910/.
Testo completoVela, Patricio Antonio Burdick Joel Wakeman. "Averaging and control of nonlinear systems /". Diss., Pasadena, Calif. : California Institute of Technology, 2003. http://resolver.caltech.edu/CaltechETD:etd-05282003-094253.
Testo completoSeki, Hiroya. "Feedback Control of Nonlinear Chemical Reactors". 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149439.
Testo completoShwan, Kurdi Mir. "Nonlinear Attitude Control ofa Generic Aircraft". Thesis, KTH, Flygdynamik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261696.
Testo completoTo, Lap C. "Nonlinear control techniques in alumina refineries". Thesis, Curtin University, 1996. http://hdl.handle.net/20.500.11937/130.
Testo completoTo, Lap C. "Nonlinear control techniques in alumina refineries". Curtin University of Technology, School of Chemical Engineering, 1996. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=12276.
Testo completoin Alcoa's Kwinana alumina refinery demonstrated the practicability and feasibility of implementing nonlinear control in an industrial setting and also fostered a closer gap between academia and industry. The trials established guidelines for implementing a global linearizing controller on site, including conversion of the relevant constraints and the output of an industrial proportional and integral controller to the equivalent proportional and integral action required by the nonlinear controller. The results showed that the performance of the nonlinear controller was better than the current linear controller on site in terms of responsiveness and resistance to disturbances. Hence, the nonlinear control strategy enables the process to settle faster.All in all, efforts have been made in this thesis to minimise the use of abstract mathematical language and, in some cases, simplify the language so that nonlinear control theory can be understood by a wider range of audience, especially industrial practitioners. It is hoped that the insights provided in the dissertation will encourage more industrial implementations of nonlinear controllers and forge more interaction to close the widening gap between academic and industrial practice in process control.Keywords: nonlinear control, differential geometry, symbolic algebra, evaporator process, uncertainty vector adjustment, geometric nonlinear filter.