转子接触摩擦故障的模糊诊断(二)——模糊诊断中几个问题的探讨

The Fuzzy Diagnoses of Rotor's Contact Rubbing Faults ( Ⅱ ) ——inquiring into a few problems

在本文(一)的基础上对模糊诊断中的3个重要问题进行了较详细的探讨:1.在模糊识别时,如何对初始征兆值加权,以提高识别效果;2.引出隶属度增长率这一指标,使识别效果大幅度提高;3.在用“升半哥西分布函数”计算时,对其中系数k值选择的重要性与正确的确定方法.

This paper gives a minute inquiry about three problems of fuzzy diagnoses on the basis of Paper ( I ). (1) How to weight initial signal quantities in the course of fuzzy recognition so as to improve the recognizing effects. (2) Improve recognizing effects greatly by bringing in such an index as' the increasing rate of subordinate degree'. (3) How to accurately choose the important coefficient k when computing with the increasing semi-Gush density function.