齿轮箱是机械设备中一种必不可少的通用零部件,也是故障多发部件,而齿轮失效又是诱发其故障的重要因素。因此发展新型齿轮箱故障诊断技术具有重要意义。搭建了基于Polytec激光测振仪的光学测量系统,拾取齿轮箱振动信号,采用第二代小波提取故障特征,达到了故障诊断的目的,可用于齿轮箱故障预知和智能维修。 Gear box is a mechanical and mechanical equipment essential common parts, but also failure of multiple parts, and gear failure is an important factor inducing its failure. Therefore, the development of new gearbox fault diagnosis technology is of great significance. The optical measurement system based on Polytec laser vibrometer was built. The vibration signals of the gearbox were picked up and the fault features were extracted by the second generation of wavelet to achieve the purpose of fault diagnosis, which could be used to predict gearbox failures and intelligent maintenance.