旋转叶片振动参数检测方法

论述了一种高精度旋转叶片振动参数叶尖定时检测方法。设计一套叶尖定时传感系统; 利用叶尖经过非接触测头的时间进行测量, 与传统接触测量方法相比, 具有实时性强、精度高、适用于高转速等优点。通过多个叶尖定时传感器实现对叶片振动的实时、全面监测; 利用叶根同步传感器减小了由于转速不稳定造成误差的影响。论述了系统原理和叶尖定时信号的处理方法, 并做出了讨论。
关键词　振动测量　非接触测量　叶尖定时　传感器　信号处理
Abstract　A h igh accuracymethod using t ip2t im ing fo r test ing vibrat ion parameters of ro to r blade is described1A t ip2t im ing senso r system is devised1The method uses the t ime at wh ich the blade t ip s pass the p robes to monito r the blade vibrat ion1Compared w ith the t radit ionalmeasuring methods, the new method has the advantages of re2 al2t ime, h igh p recision and suitable fo r h igh ro to r speed1The real2t ime and comp lete detect ion to the blades is re2 alized by means of several t ip2t im ing senso rs1The blade bo t tom senso rs are used fo r elim inat ing erro rs caused by the instability of ro to r velocity1The theo ry of the system and the p rocessing method of t ip2t im ing signals are de2 scribed, and the discussion is p resented1
Key words　V ibrat ion measurement　Non2contact ing measurement　T ip2t im ing　Senso r　Signal p rocessing