Robust adaptive fault‐tolerant tracking control of multiple time‐delays systems with mismatched parameter uncertainties and actuator failures
Robust adaptive fault‐tolerant tracking control of multiple time‐delays systems with mismatched parameter uncertainties and actuator failures
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DOI：
10.1002/rnc.3241
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发表时间：
2015-11
影响因子：
3.9
通讯作者：
Libing Wu;Guanghong Yang
中科院分区：
文献类型：
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作者：
Libing Wu;Guanghong Yang
研究了一类具有多重时滞状态扰动、不匹配参数不确定性、外部干扰和执行器故障（包括失效、中断和卡住）的不确定系统的鲁棒自适应容错跟踪问题。假设时滞状态扰动、外部扰动和不可参数化时变故障的上界是未知的。然后，通过在线估计这些未知界，并基于自适应机制对这些未知界的更新值，构造了一类具有切换信号函数的无记忆状态反馈容错控制器，实现了动态信号的鲁棒跟踪.此外，通过使用所提出的自适应鲁棒跟踪控制器，跟踪误差可以保证渐近为零，尽管多个延迟状态摄动，不匹配的参数不确定性，外部干扰，和执行器故障。此外，还证明了所得到的自适应闭环系统的具有跟踪误差的解是一致有界的。最后，以B747 - 100/200飞机系统为例，验证了该容错设计方法的有效性。版权所有© 2014约翰威利父子有限公司.
This study deals with the problem of robust adaptive fault‐tolerant tracking for uncertain systems with multiple delayed state perturbations, mismatched parameter uncertainties, external disturbances, and actuator faults including loss of effectiveness, outage, and stuck. It is assumed that the upper bounds of the delayed state perturbations, the external disturbances and the unparameterizable time‐varying stuck faults are unknown. Then, by estimating online such unknown bounds and on the basis of the updated values of these unknown bounds from the adaptive mechanism, a class of memoryless state feedback fault‐tolerant controller with switching signal function is constructed for robust tracking of dynamical signals. Furthermore, by making use of the proposed adaptive robust tracking controller, the tracking error can be guaranteed to be asymptotically zero in spite of multiple delayed state perturbations, mismatched parameter uncertainties, external disturbances, and actuator faults. In addition, it is also proved that the solutions with tracking error of resulting adaptive closed‐loop system are uniformly bounded. Finally, a simulation example for B747‐100/200 aircraft system is provided to illustrate the efficiency of the proposed fault‐tolerant design approach. Copyright © 2014 John Wiley & Sons, Ltd.