Combined Synthesis of State Estimator and Perturbation Observer
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Published:2003-03-01
Issue:1
Volume:125
Page:19-26
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ISSN:0022-0434
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Container-title:Journal of Dynamic Systems, Measurement, and Control
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language:en
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Short-container-title:
Author:
Kwon SangJoo1, Chung Wan Kyun1
Affiliation:
1. Robotics & Bio-Mechatronics Lab., Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea
Abstract
A combined observer is synthesized by unifying the conventional linear state estimator and the perturbation observer to estimate plant uncertainties and disturbances. It enables robust state estimation for uncertain dynamical systems and simultaneously, provides full-state to the perturbation observer under output feedback conditions. The proposed combined observer is very practical since it is given as a recursive discrete-time form with minimal tuning parameters, and it requires no knowledge of the plant uncertainty. A coupled estimation error dynamics is derived, and the related technical issues such as stability and noise sensitivity are addressed. The combined observer setting is also extended to stochastic systems, and the discrete Kalman filter is reformulated by including the perturbation estimate update process. Numerical examples and experimental results validate the proposed schemes.
Publisher
ASME International
Subject
Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering
Reference20 articles.
1. Friedland, B., 1996, Advanced Control System Design, Prentice-Hall, New Jersey. 2. Slotine, J.-J. E., Hedrick, J. K., and Misawa, E. A., 1987, “On Sliding Observers for Nonlinear Systems,” ASME J. Dyn. Syst., Meas., Control, 109(3), pp. 245–252. 3. Walcott, B. L., and Zak, S. H., 1988, “Combined Observer-Controller Synthesis for Uncertain Dynamical Systems with Applications,” IEEE Trans. Syst. Man. Cybern., 18, Feb., pp. 88–104. 4. Moura, J. T., Elmali, H., and Olgac, N., 1997, “Sliding Mode Control with Sliding Perturbation Observer,” ASME J. Dyn. Syst., Meas., Control, 119(4), pp. 657–665. 5. Chang, P. H., Lee, J. W., and Park, S. H., 1997, “Time Delay Observer: A Robust Observer for Nonlinear Plants,” ASME J. Dyn. Syst., Meas., Control, 119(3), pp. 521–527.
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