Event‐triggered adaptive fixed‐time output feedback fault tolerant control for perturbed planar nonlinear systems
Event‐triggered adaptive fixed‐time output feedback fault tolerant control for perturbed planar nonlinear systems
复制标题
DOI：
10.1002/rnc.5655
复制
发表时间：
2021-07
影响因子：
3.9
通讯作者：
Chenglong Zhu;Kanjian Zhang;Xin Xin-Xin;F. Gao;Haikun Wei
中科院分区：
文献类型：
--
作者：
Chenglong Zhu;Kanjian Zhang;Xin Xin-Xin;F. Gao;Haikun Wei
研究了一类不确定平面非线性系统的事件触发自适应固定时间输出反馈容错控制问题，其中执行器存在未知漂移故障和失效故障.首先，在广义Lipschitz连续条件下，利用自适应Backstepping技术和事件触发理论，设计了一种构造性的事件触发自适应固定时间状态反馈控制器.其次，对于不可测状态，构造了连续固定时间观测器。结果表明，双极限齐次技术和李雅普诺夫理论分析保证了闭环系统的全局实际固定时间稳定性.此外，该系统被证明是矛盾的nonzeno。最后，通过风机转速控制系统的构建，验证了所提控制策略的有效性和一般系统的应用。
This paper considers an event‐triggered adaptive fixed‐time output feedback fault tolerant control problem for a class of uncertain planar nonlinear systems, in which the actuator has an unknown drift fault and the loss of effectiveness fault. Firstly, by using the adaptive backstepping technique and event‐triggered theory, a constructive event‐triggered adaptive fixed‐time state feedback controller is presented under a generalized Lipschitz continuous condition. Secondly, for the unmeasured state, a continuous fixed‐time observer is constructed. It is shown that the global practically fixed‐time stability of the closed‐loop systems is ensured by the bilimit homogeneity technique and Lyapunov theory analysis. Moreover, the system is demonstrated by contradiction to be nonzeno. Finally, the fan speed control system is constructed to demonstrate the validity of the proposed strategy and the application of the general systems.