基于振动工程相位检测的故障诊断方法研究

Research on Phase Analysis in Fault Diagnosis

对故障诊中涉及到的相位概念和相位分析的基本思想进行了阐述,指出全息谱相位分析的合理性及其适用场合;结合工程实践,对基于机壳振动信号的相位分析相关问题进行了研究,提出工程相位的概念,设计了光电传感器对其检测方法,并重点对转子质量不平衡故障的相位诊断原理进行了研究;将相位分析成功应用于全息谱技术无法应用的基于机壳振动信号的分析,具有一定的实用性和推广价值。

Application of phase analysis in fault diagnosis is researched, nalysis with holospectral and its suitable situation are pointed out. Through and the rationality of phase aproject practice, phase analysis based on vibration signal of machine shell has been studied, the concept of engineering-phase is defined. Its detection principle and methods based on photoelectric phase sensor is introduced, and the phase analysis principle of un-balance of rotor is described. Finally phase analysis is successfully applied to vibration signal of machine shell which the holospectral is not suitable for. The practice application shows it is utility and effective.