一种新颖的故障检测滤波器设计

研究了含有未知输入线性系统的故障检测问题，针对传统方法丢失信息或繁琐复杂的缺点，设计了一种新颖的故障检测滤波器。该方法使未知输入在故障发生前衰减到几乎处处为零，系统近似为无未知输入的标准系统，残差只敏感于故障，动态的实现了未知输入与故障的分离。仿真结果表明，该方法效果良好。

A Novel Design of Fault Detection Filter

The problem of fault detection for linear system with unknown inputs is deeply studied. Against the shortcoming of information dropping-out or complexity using traditional fault detection method, a novel design of fault detection filter is presented. This method can almost get unknown inputs attenuation to zero everywhere before the fault happening, then the system is approximately standard system without unknown inputs. Because the residual is only sensitive for fault, the isolation of unknown inputs and fault is dynamically achieved. The emulation result shows that this method has good effect.