柴油机故障诊断中的模糊多元判别法

模糊多元判别法是把模糊数学理论与多元统计分析和模式识别理论结合起来的一种判别方法。它可以实现用非模糊多元数据识别模糊类群。这正是故障诊断技术所需要的，因为故障本身是模糊概念，而状态监测得到的数据如：振动幅值、频率、功率谱值等均是非模糊数据。本文介绍了模糊多元判别法的理论，并将其应用于北京型机车柴油机故障的诊断。

The Fuzzy Multivariate Discriminant Method on Fault Diagnosis of Diesel Engine

The fuzzy multivariate discriminant method is a discriminant method integrated the Fuzzy Mathematics and the multivariate analysis with the model recognition theory.By this means,we can use the non-fuzzy data to identify the fuzzy category,which is needed in fault diagnosis technologyneeds,because fault pattern is fuzzy conception,but not data such as amplitude and frequency of vibration.This paper discusses the theory of tt on the diesel engine of Beijing locomotive.