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Identification and control of nonlinear laboratory processesXi, Zhiyu, Electrical Engineering & Telecommunications, Faculty of Engineering, UNSW January 2007 (has links)
In this thesis, a class of control and identification methods on a typical laboratory process - a ball and beam system - are discussed. The ball and beam is a common laboratory process which contains nonlinearity, a double integrator and time-delay. In our project, the hardware made by Wincon (Quanser SRV02 +BB01) is used. The main contribution of this work is the development of a variety of controller design methods, which together with suitable parameter identification techniques provide tools for rapid prototyping for real time control of processes within the laboratory, in preparation for industrial implementation of more complex schemes. The novelty of this work lies in the use of model predictive control (MPC) methods based on a non-minimal state space formulation, which permits the inclusion of process measurements and actuations in the state vector, leading to controller designs which are immediately ready for on-line implementation. A linear MPC controller based on a non-minimal state space model is based on an approximate linear model. The results from simulation and online experiment show that the linear MPC controller realizes a satisfying reference tracking in the face of nonlinearity and time-delay. In the following chapter, a nonlinear Hammerstein model is identified, which is a type of reliable structure for describing nonlinear plants. A nonlinear MPC scheme is developed based on the Hammerstein model. An inversion block is created to cancel the effect of the nonlinearity. The performance IS also tested in both simulation and experiment. Finally, MPC is combined with sliding mode control. The non-minimal state space model is also used here. In the first part of this chapter, the idea underlying sliding mode control contributes a method of modifying the definition of the cost function in MPC. In the second half, MPC is used to design the switching surface in sliding mode control. The performance of tests on the example (ball and beam system) illustrates that these are both valid methods for dealing with complex processes.
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Nonlinear systems control using a subset stabilization approachSimmons, Adam Terry, January 2006 (has links) (PDF)
Thesis (Ph.D.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references (ℓ. 64-65)
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Solution of nonlinear least-squares problems /Fraley, Christina. January 1987 (has links)
Thesis (Ph. D.)--Stanford University, 1987. / "June 1987." This research was supported in part by Joseph Oliger under Office of Naval Research contract N00014-82-K-0335, by Stanford Linear Accelerator Center and the Systems Optimization Laboratory under Army Research Office contract DAAG29-84-K-0156. Includes bibliographies.
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A novel all-optical wavelength exchange in highly nonlinear fiberFung, Wai-lam. January 2007 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2008. / Also available in print.
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Causal and statistical analyses of dithered systems containing three-level quantizersJaffe, Richard C. January 1959 (has links)
Thesis (M.Sci.)--Massachusetts Institute of Technology, 1959. / Includes bibliographical references (leaf 98).
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Fibre-optic nonlinear optical microscopy and endoscopyFu, Ling. January 2007 (has links)
Thesis (PhD) - Swinburne University of Technology, Faculty of Engineering and Industrial Sciences, Centre for Micro-Photonics, 2007. / A thesis submitted for the degree of Doctor of Philosophy, Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, 2007. Typescript. Bibliography: p. 146-162.
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Geometrically nonlinear analysis of plane trusses and plane frames /Madutujuh, Nathan. January 1991 (has links)
Report (M.S.)--Virginia Polytechnic Institute and State University. M.S. 1991. / Includes bibliographical references (leaves 95-99). Also available via the Internet.
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Steady-state oscillations of linear and nonlinear systems /Tucher, Christopher A. January 1992 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1992. / Typescript. Includes bibliographical references.
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Synthesis and stability studies of Z-beta-(1-substituted-4-pyridinium)-alpha-cyano-4-styryldicyanomethanide nonlinear optical chromophores /Weir, Cara A. M. January 1900 (has links)
Thesis (M. Sc.)--Carleton University, 2003. / Includes bibliographical references. Also available in electronic format on the Internet.
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Numerical methods for nonlinear wave propagation in ultrasoundPinton, Gianmarco F. January 2007 (has links)
Thesis (Ph. D.)--Duke University, 2007. / Includes bibliographical references.
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