基于LabVIEW的叶尖定时采集系统的信号处理方法研究

摘要

旋转叶片振动的非接触测量是叶片振动测量技术中的一种.研究了基于LabVIEW的叶尖定时采集分析系统的信号处理方法,并进行了改进,使得系统计算出的叶片振动位移更加精确,同时能够快速地处理采集卡所采集到的数据,在实验室将该方法应用于叶片转子试验台,得到叶片振动位移数据进行参数识别,证明改进后的信号处理方法具有更好的可靠性.%Non-contact blade vibration measurement is a method for detecting blade vibration. The paper researches on the method of signal processing in the blade tip timing system based on LabVIEW and modifies this system, so as to make the blade vibration data calculated in this system more accurate and to be enabled to repidly process the collected data. This method is applied to the blade vibration test rig in the laboratory to obtain the blad vibration data and the parameter identification is used to prove the reliability of the new method.