基于输出反馈的不确定NCS鲁棒容错控制

研究了一类具有网络诱导时延和参数不确定性网络化控制系统鲁棒容错控制问题.基于将时延的不确定性转换为系统状态方程系数矩阵不确定性的NCS模型,同时考虑系统参数不确定性对系统的影响,应用Lyapunov稳定性理论和LMI方法,采用输出反馈控制策略,推证出了保证闭环网络化控制系统在执行器或传感器发生故障时仍渐进稳定的充分条件,并以求解线性矩阵不等式组给出了容错控制器的设计方法,最后用仿真算例验证了此方法的可行性和有效性.

Robust Fault-tolerant Control of NCS with Uncertainty Based on Output Feedback

The problem of robust fault-tolerant control for networked control systems(NCS)with uncertain time-delay and uncertain parameter is studied.Based on Time-delay model for networked control systems,the Lyapunov stability theory and LMI methods are used to derive the sufficient conditions to ensure that the NCS with uncertain time-delay and uncertain parameter against actuator or sensor failures is asymptotically stable by adopting output feedback control law.The robust fault-tolerant controller is designed.The numerical example shows that effectiveness and feasibility of the proposed method.