最优故障检测滤波器设计

Optimal Fault Detection Filter Design

针对执行机构故障研究检测滤波器对噪声的鲁棒性问题．首先利用特征结构配置方法研究多故障情况下检测滤波器的设计问题，并给出其增益矩阵的基本结构，然后针对过程噪声和测量噪声研究最优故障检测滤波器的设计问题，提出求解最优增益矩阵的一种算法，最后采用某型号飞机方程进行仿真验证．仿真结果表明。

The robustness problem of fault detection filter to the noises is focused on, which is limited to actuator fault detection and isolation. First, the eignstructure assignment approach is applied to the design problem of fault detection filter under multiple faults and a general structure of its gain matrix is proposed. Then the optimal detection filter to the process and measurement noises is designed, and a method to solve the optimal gain matrix is proposed. In the end, the simulation test of the method in an aircraft equation is carried out. The result shows the optimal fault detection filter is effective to hold back the effect of the noises to the system.