遗忘因子模糊自调整算法及在故障诊断中的应用

基于参数估计的故障诊断方法因为具有确定故障发生的时间、位置和程度的能力而越来越引起人们的重视。时变（快速的或慢速的）参数辨识是基于参数估计故障诊断方法的关键。本文根据系统的变化，基于模糊控制的原理自动调整遗忘因子，导出了一种实现比较简单，对参数的时变具有较高跟踪速度和跟踪精度的辨识方法。理论分析和仿真试验证实了该方法的有效性

THE SELF TUNING OF THE FORGETTING FACTOR AND ITS APPLICATION TO THE FAULT DIAGNOSIS

Due to the ability of determing the time,position and degree of the system's fault,Which the fault diagnosis method based on the parameter estimation has,much more attentions have been given to this kind of fault diagnosis method,the key of the method is the parameter estimation of the time varying system This paper present a new agorithm for time varying system,with the aid of the Fuzzy controller,the forgetting factor of the algorithm is adjusted automatically,thus the algorithm can track the Variation of the parameter quickly and accurately,the theorical analysis and the simulation proved the same result