摘要
为解决机车制动机故障诊断的滞后性问题,将小波分析与模糊产生式规则方法相结合应用于机车制动机故障诊断中。开展了对机车制动机气路系统故障诊断过程中内部管道压力变化速率与故障发生的因果关系的分析,提出了采用小波多尺度边缘检测法提取故障征兆,并与多征兆加权模糊产生式规则相结合的故障诊断方法,建立了故障征兆与故障原因之间的关系,进行了机车制动机故障诊断系统的试验。研究结果表明,该方法于机车制动机故障诊断中是有效的,可以提高机车制动机故障诊断的实时性和准确性。
In order to solve the problems of diagnosis method for air brake of diesel locomotive hysteresis-free,a diagnosis method to combine the wavelet analysis with the expression of fuzzy production rule was investigated.After the analysis of relationship between the brake of diesel locomotive＇s varying rate of internal pipeline pressure and its fault cause,a method was presented to combine the wavelets multiscale edge detection for extracting the symptom of the failures with the expression of multiple symptom fuzzy diagnosis knowledge.The diagnosis methods for air brake of diesel locomotive were tested.The experimental results show that the diagnosis system can improve the real-time and veracity of the diagnosis for air brake of diesel locomotive effectively.
出处
《机电工程》
CAS
2011年第3期301-304,共4页
Journal of Mechanical & Electrical Engineering
基金
浙江省自然科学基金资助项目(未提供)
关键词
制动机
压力变化速率
小波变换
加权模糊产生式规则
brake
varying rate of pressure
wavelet transform
weighted fuzzy production rules
