First the feathers of vehicle hydraulic shock absorber vibration and sound is synthesized detailedly, classified as abnormal sound of friction attack, abnormal sound of resonance, abnormal sound of flow cutting and abnormal sound of gas.

• 首先对车辆液力减振器的振动噪声的特点进行了较为详细的分类和归纳总结，减振器异响分为：摩擦撞击异响、共振异响、截流异响和气体异响。