多重故障诊断方法研究

Study of Multiple Fault Diagnosis Method

针对复杂系统故障模式较多时难以满足实时性的要求 ,对传统降阶观测器的诊断方法进行了改进 ,提出了基于动态观测器的诊断方法。该方法通过设计一个动态观测器去检测一系列故障 ,其效果等同于使用了一族观测器。当把耦合故障表示成故障信号的组合时 。

When the complicated system has more fault modes,the necessity of real- time can’t be satisfied.So the diagnosis method on the dynamic observer is proposed to improve the traditional diagnosis method based on the reduced order observer.A series of faults can be detected through the dynamic observer,which is equal to a set of observers.When the couple fault can be expressed combination of the fault noise,this method can be used on the decoupling of the couple fault.