活塞式空气压缩机的主要功能由往复运动完成,振动是其主要故障标志之一。针对往复式空气压缩机各部件运动引起的复合振动激励信号,对各部件建立振动信号模型并提取冲击响应信号特征,在时域与频域里进行综合分析,提取各故障特征参数和判据从而诊断压缩机常见故障。 Piston air compressor’s main function is completed by the reciprocating motion, vibration is one of the main signs of failure. Aiming at the complex vibration excitation signals caused by the movement of the reciprocating air compressor components, the vibration signal model is established for each component and the characteristics of the impact response signal are extracted. The comprehensive analysis is carried out in time domain and frequency domain to extract the characteristic parameters and criteria of each fault Diagnosis compressor common fault.