故障特征频率周围的边带及其谐波是机械故障的重要特征与诊断依据,因此可以利用其对低转速、大扭矩齿轮箱内的轴承磨损进行分析诊断。事实证明,机械振动故障特征频率周边的边频带及其谐波能够有效地反映机械故障产生的原因,因而利用它进行轴承故障诊断往往可以取得良好的效果。 Sidebands and their harmonics around the fault characteristic frequency are important features and diagnosis basis of mechanical faults, so they can be used to analyze and diagnose bearing wear in gearboxes with low speed and high torque. It has been proved that the sidebands and their harmonics around the characteristic frequency of the mechanical vibration fault can effectively reflect the causes of the mechanical fault. Therefore, bearing fault diagnosis can often achieve good results.