用振动和噪声信号诊断汽车变速箱齿轮故障的研究

在深入阐明应用振动与噪声信号诊断齿轮故障机理的基础上，通过对测取的齿轮正常和故障运行状态下的振动与噪声信号进行分析处理，研究了几何误差显著差异和具有典型故障的齿轮系统的振动与噪声信号的频域图象特征及其识别技术，并作了特征参数的提取同时，对分别应用振动和噪声信号诊断齿轮故障的等效性作了对比分析

Research on Diagnosing Gear Failure of Automobile Transmission-case by the Vibration and Noise Signals

The paper states in details the principle and applied theory of diagnosing gear failure by vibration and noise signls at first,then analyzes picture characteristics and diagnostic technique of the vibration and noise signls of gear systems which have different geometric errors or typical faults in the frequency field by picking-up the signals when while the gear system is running,and searches out the characteristic parameter Simultaneously ,the paper studies the equivalence by the vibration and noise and the noise one for the gear failure diagnosis respective