一类Neutral时滞系统的鲁棒故障检测方法

Robust Fault Detection Approach for a Class of Neutral Time Delay Systems

针对一类具有不确定输入的 Neutral时滞系统 ,应用 H∞ 控制理论和 L yapunov原理得到了系统的带记忆状态观测器的鲁棒故障检测方法。证明并给出了观测器对不确定性具有 L2 范数界的渐近稳定条件和增益阵设计的线性矩阵不等式(L MI)方法 ,同时使残差体现了对故障信号响应的灵敏度。仿真算例表明了该方法进行鲁棒故障检测的有效性。

The robust fault detection problem is considered for a class of uncertain neutral time-delay systems. The asymptotically stable condition and the LMI design of memory observer, which implies the sensitivity of residuals to fault signals, are developed by Lyapunov function and H infinity control theory. The designed observer is of the property of L2 norm bound constraints to uncertainty and faults. Simulative example illustrated the validity of the proposed method.