【作者】 郭瑜； 董为民； 迟毅林； 郑华文；

【Author】 Guo Yv;Dong Weiming;Chi Yilin;Zheng Huaweng;

【机构】 昆明理工大学机电学院；

【摘要】 本文介绍了一种崭新的用于旋转机械特征分析的虚拟仪器。该仪器在功能上包括了先进的时频分析技术,并运用了时频分析技术中的瞬时频率理论,提出并实现了基于瞬时频率的阶比跟踪、阶比跟踪滤波、阶比分量提取和阶比分析等多项新技术,弥补了传统仪器在旋转机械非稳定信号分析上的不足。试验表明,该仪器能有效对旋转机械升降速阶段的非平稳信号进行特征提取和分析。更多还原

【Abstract】 A new virtual instrument for vibration characters analysis of rotating machinery based on time-frequency analysis is introduced in this paper.Some advanced non-stationary analysis techniques are adopted by it.For example,the time-frequency analysis and some special methods based on the instantaneous frequency estimation(IFE) such as the IFE based order tracking,the IFE and zero-phase distortion digital filtering based order filtering,the IFE based order component extraction etc.,which are researched and developed in the developing of this virtual instrument.Tests cited it worked effectively on doing characters extraction & analysis of non-stationary vibration of rotating machinery.更多还原