Adaptive output feedback fault tolerant control for uncertain nonlinear systems based on actuator switching |
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| Authors: | Chen Sun Yan Lin |
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| Institution: | 1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China;2. School of Electrical Engineering and Automation, Anhui University, Hefei, 230601, China;1. College of Information Engineering, Nanjing University of Finance & Economics, Nanjing 210023, PR China;2. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200011, PR China;3. The Institute of Advanced Technology, Nanjing University of Posts and Telecommunications, Nanjing 210023, PR China;1. School of Information and Software Engineering, University of Electronic Science and Technology of China, China;2. School of Mathematical Science, University of Electronic Science and Technology of China, China;3. School of Information Science and Engineering, Chengdu University, China;1. School of Automation and Information Engineering, Xi’an University of Technology, China;2. Autonomous Systems and Intelligent Control International Joint Research Center, Xi’an Technological University, China;3. State Key Laboratory of Astronautic Dynamics, China;1. School of Mathematical Science, Heilongjiang University, Harbin 150080, P. R. China;2. Heilongjiang Provincial Key Laboratory of the Theory and Computation of Complex Systems, Heilongjiang University, Harbin 150080, P. R. China;1. University of the Basque Country, (UPV/EHU), Spain;2. Hakim Sabzevari University, Sabzevar, Iran;3. Faculty of Engineering of Vitoria-Gasteiz, Nieves cano, 12. 1006 Vitoria-Gasteiz, Spain;1. School of New Energy, Harbin Institute of Technology (Weihai), Weihai 264209, PR China;2. College of Engineering, Texas A&M University-Kingsville, Kingsville, TX 78363, USA |
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| Abstract: | In this paper, an adaptive output feedback fault tolerant control (FTC) based on actuator switching is proposed for a class of single-input single-output (SISO) nonlinear systems with uncertain parameters and possible actuator failures, for which a set of healthy actuators are available as backups. While high-gain K-filters are utilized to estimate the unmeasured states, an adaptive control law is designed to compensate for the parameter uncertainties and certain actuator failures, an actuator switching strategy based on a set of appropriately designed monitoring functions (MFs) is proposed to tackle those serious actuator failures, make tracking error satisfy prescribed transient and steady-state performance and guarantee closed-loop signal boundedness. |
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