摘要
在基于D-S证据理论的故障诊断中,由于干扰或可靠性等原因,各传感器用来判断故障原因可能性的基本置信分配会出现相互冲突的现象。在冲突证据下,进行D-S诊断的前提条件是解决各传感器基本置信分配间矛盾性的衡量问题。虽然人们已对此做了一些探讨,但都没有反映D-S故障诊断的需要,研究成果无法得到应用。文中首先介绍了D-S故障诊断;然后分析了已有证据矛盾性衡量方法的不足;最后提出了一种新的衡量各传感器基本置信分配间矛盾性的方法,并进行了详细证明,实验结果表明了所提方法的正确性。
In fault diagnosis based on D-S evidence theory, because of disturb and reliability, the evidence basic belief assignment given by sensors often come into conflict with each other. In this condition, D-S diagnosis must firstly solve how to measure evidence contradiction. Although people have done some research work to it, the need of D-S fault diagnosis is not reflected and research results can not be applied. This paper introduces D-S fault diagnosis at first. Then the shortage of existing research of evidence contradiction is analyzed. At last a new method of measuring evidence contradiction is proposed and proved.
出处
《电子测试》
2008年第5期21-24,共4页
Electronic Test
关键词
故障诊断
DS证据理论
冲突
衡量
fault diagnosis
D-S evidence theory
conflict
measure
