车辆液力减振器异常噪声鉴别方法

Abnormal Noise Test Method of Vehicle Hydraulic Shock Absorber

对车辆液力双筒减振器的工作原理和异常噪声检测方法进行了分析,在大量试验数据和信号特征分析的基础上,提出了液力双筒减振器异常噪声的时域波形衰减量鉴别方法,经对大量的车辆液力双筒后减振器异常噪声的实际验证,鉴别成功率达到98. 5%以上,能够满足一般工厂企业产品质量控制方面的检测要求。还对减振器异常噪声产生的原因进行了理论和仿真分析,对时域波形衰减量鉴别方法进行了较深入的理论解释,得出了有实价值的结论。

The work principle and abnormal noise test method of hind vehicle hydraulic shock absorber are analyzed, Based on experiment data and signal character analyse ,a test method is found to distinguish the abnormal noise of rear hydraulic shock absorber. Practical validates that the reliability rate of this test method can be over 98 percents, and it can be satisfied with the request of the factory. At last, the reason of abnormal noise is analyzed and simulated, the reason of different signal attenuation is explained, and the research conclusion is educed.