论文部分内容阅读
鉴于列车轮对故障特征信息往往被淹没在背景噪声里,而一般频谱分析方法常因负载变化、转速波动而造成谱值模糊不准的缺点,提出了一种列车轮对故障在线诊断的特征谱分析方法,并根据列车轮对故障诊断的实际需要,研制了故障在线诊断特征谱分析系统.阐述了该方法的原理、信号采样、信号处理以及特征谱泄漏抑制等问题.实际运用结果表明该方法比普通的频谱分析技术更为准确地描述了故障信号的特征,是一种可靠而有效的故障诊断方法.图5,参8.
In view of the fact that the characteristic information of train wheel pair fault is often submerged in the background noise, and the general spectrum analysis method often has the disadvantage of fuzzy spectrum value caused by load variation and speed fluctuation, a characteristic spectrum of on-line diagnosis of train wheel failure The paper analyzes the method of fault diagnosis based on train wheels and develops a fault diagnosis system based on fault diagnosis.The principle of this method, signal sampling, signal processing and feature spectrum leakage suppression are discussed.The practical application shows that this method It is a reliable and effective fault diagnosis method to describe the characteristics of the fault signal more accurately than the common spectrum analysis technique.