旋转机械轴心轨迹识别方法综述

本文从旋转机械故障机理、轴心轨迹提纯、轴心轨迹特征提取与识别三个方面对旋转机械轴心轨迹的研究现状进行了论述,分析了目前应用较广的几种提纯和识别方法的原理以及特点。在此基础上,针对当前轴心轨迹识别方法研究在识别内容的完善性、识别方法的局限性和对未知故障的识别能力上存在的问题进行了分析。最后指出,旋转机械轴心轨迹识别方法在进动方向和稳定性方面应进一步研究,多种方法融合的识别研究是新的发展趋势,信号分析技术的发展也会为轴心轨迹识别提供可靠的技术支持。

Review of identification of shaft orbit for rotating machinery

A review on the research progress of shaft orbit in terms of failure mechanism, orbit purification, feature extraction and identification is presented. Considering different characteristics, widely employed identification methods and principles of shaft orbits have been introduced. Comparisons of identification methods, including completeness of contents, boundedness of identification methods and efficiency of unknown fault, have been performed. Further research of precession direction and stability of shaft orbit is necessary. Fusion of various methods is the new trend of development. The development of signal analysis techniques will also provide reliable technical support.