Fault tolerant control with disturbance rejection and attenuation performance for systems with multiple disturbances |
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Authors: | Songyin Cao Lei Guo Xinyu Wen |
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Affiliation: | School of Automation, Southeast University, Nanjing, 210096, China |
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Abstract: | It is difficult to diagnose and accommodate the faults if disturbances and faults exist simultaneously in the controlled plants. In this paper, an anti‐disturbance fault tolerant control (FTC) scheme is presented for a class of nonlinear systems with both faults and multiple disturbances. The multiple disturbances are supposed to include two types including the uncertain modeled disturbances and norm bounded uncertain disturbances. A composite fault tolerant controller is constructed by integrating a fault accommodation from diagnosis observer with additional disturbance rejection and attenuation performance for two different types of disturbances. As a result, the fault can be accommodated and the multiple disturbances can be rejected and attenuated simultaneously. Simulations for a flight control system are given to show the efficiency of the proposed approach. Copyright © 2010 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society |
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Keywords: | Fault tolerant control multiple disturbances disturbance atten‐uation disturbance rejection estimation and filtering |
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