Active fault‐tolerant control for near space vehicles based on reference model adaptive sliding mode scheme |
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| Authors: | Jing Zhao Bin Jiang Fahmida N Chowdhury Peng Shi |
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| Affiliation: | 1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China;2. The National Science Foundation, Arlington, VA, USA;3. Department of Computing and Mathematical Sciences, University of Glamorgan, Pontypridd, UK;4. School of Engineering and Science, Victoria University, Melbourne, VIC, Australia;5. School of Electrical and Electronic Engineering, University of Adelaide, Adelaide, SA, Australia |
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| Abstract: | In this paper, an adaptive sliding mode (ASM) scheme is proposed for fault identification and fault‐tolerant control of near space vehicles (NSVs). First, the attitude dynamic model is introduced, and a baseline controller based on reference sliding mode scheme is designed in the case of no faults. Then fault parameterizations with actuator dynamics is presented for several classes of faults: lock‐in‐place, float, hard‐over, and loss of effectiveness. On the basis of adaptive observer design, fault parameters can be accurately estimated on‐line. Furthermore, an ASM fault‐tolerant controller is designed for both cases of actuator dynamic faults and control effector damage. Finally, simulation experiments show that the proposed ASM scheme is able to quickly and accurately identify faults and reconfigure the controller, resulting in excellent overall system performance. Copyright © 2012 John Wiley & Sons, Ltd. |
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| Keywords: | fault identification fault‐tolerant control actuator dynamic adaptive sliding mode near space vehicles |
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