改进的D-S证据理论在电路故障诊断中的应用研究

摘要

针对传统的线路切割法在电路故障诊断表现出的诸多问题,提出了一种基于改进D-S证据理论的电路故障诊断方法.在该方法中,基于多传感器的故障信息源的并集共同构成识别框架,并利用改进的Dempster合成法则对测试数据进行融合.实例研究表明,该方法增加了诊断系统的可分析性,有效地提高了故障模式的识别能力,使故障元器件定位的准确率得以提高.%Aiming at the problem of circuitry incision during the process of circuit fault diagnosis, an information fusing model is proposed based on improved D-S evidence theory. The frame discrimination is constructed by the combining sets of faults infomation. Then the testing data is fused by Dempster fusing rule. Finally an example illustrates the increaser degree of analysis for diagnosis, and the results show that the model is effective and reasonable.