論述了一種高精度旋轉葉片振動參數葉尖定時檢測方法。設計一套葉尖定時傳感系統; 利用葉尖經過非接觸測頭的時間進行測量, 與傳統接觸測量方法相比, 具有實時性強、精度高、適用于高轉速等優點。通過多個葉尖定時傳感器實現對葉片振動的實時、全面監測; 利用葉根同步傳感器減小了由于轉速不穩定造成誤差的影響。論述了系統原理和葉尖定時信號的處理方法, 并做出了討論。
關鍵詞　振動測量　非接觸測量　葉尖定時　傳感器　信號處理
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