基于LabVIEW的旋转机械计算阶次跟踪系统开发

摘要

转子系统的升降速过程包含了丰富的状态信息,一些在平稳运行时不易反映的故障征兆可能会充分地表现出来.因此,旋转机械的升降速过程中的振动信息对于旋转机械的状态监测及故障诊断具有独特的价值.转子系统的升降速过程是一种非平稳过程,其振动信号在时域和频域变化非常复杂,不满足傅里叶变换对信号的平稳性要求.基于傅里叶的传统谱分析方法无法有效地提取和分析该阶段的信息,而计算阶次跟踪技术的出现很好地解决了这一问题,基于LabVIEW开发了一套全新的旋转机械计算阶次跟踪系统.%Vibration signals can reflect the operational status of the rotor system,therefore analyzing and monitoring vibration signals of the rotor system is an effective method for rotor system's condition monitoring.The up and down process of the rotor system is a non-stationary process.The traditional FFT spectra analysis method can not be used to effectively extract and analyze the information of this stage,but the computed order tracking technique can be used to better solve this problem.Therefore,based on the study of condition monitoring methods for rotor system,a virtual instrument is designed for rotor system's on-line condition monitoring and off-line analysis.