提高Hamming模糊贴近度分辨率的研究

Research on Improving the Distinguishability of Fuzzy Approximative Degree

从Hamming贴近度定义出发 ,分析出当故障模式特征较多时 ,贴近度计算公式中反映差异部分被衰减得很厉害 ,从而导致差异减小 ,分辨率降低 ;进而提出并证明了一种新的贴近度计算方法 ,通过适当确定计算参数 ,改善了对差异部分的衰减 ,有效地提高了工程使用中的分辨率 ,并用具体实例进行了验证 .

The paper analyses the definition of Hamming approximative degree,and finds out that the reason of low distinguishability is mainly caused by the large number of fault symptoms. When the number of the symptoms is large,the difference section in the approximative degree formula is attenuated very much.So the distinguishability is low.Then the paper gives a new method to calculate the approximative degree.It can reduce the attenuation by properly determining the parameter of the formula and ipmrove the distinguishability obviously.At the end the method is proved by an example.