D-S证据理论在凝汽器故障诊断中的应用  

Application of D-S Evidence Theory to Fault Diagnosis of Condensers

作　　者：侯炜[1] 田沛[1] 徐桂成[1] 赵艳琴[2] 

机构地区：[1]华北电力大学动力系,河北保定071003 [2]中航一集团北京长城计量测试技术研究所电学室,北京100095

出　　处：《电力科学与工程》2003年第4期65-67,共3页Electric Power Science and Engineering

摘　　要：运用D S证据理论将用不同模糊方法得出的诊断结果进行融合。试验证明,融合以后的结果比模糊方法得出的诊断结果误判率更低。运用D S证据理论,可以减小因隶属度函数的不同而带来故障误判的可能性,从而更准确地判断故障原因。The diagnosis results of fuzzy methods are fused based on D-S evidence theory. It is shown that the faults can be diagnosed more accurately by the results of fusion than by the results of fuzzy methods. The error of the membership degree of faults resulted from the difference of the membership degree function can be reduced by D-S evidence theory.

关 键 词：汽轮机组 凝汽器 故障诊断 D-S证据理论 隶属度函数 D-S组合规则 

分 类 号：TK264.11[动力工程及工程热物理—动力机械及工程]