关键词: 变速箱故障诊断, 振动传感器, 测点位置, 振动信号, 时频域特征值

Abstract: In the experiments of the transmission fault diagnosis, the vibration signals are obtained from two different measure locations by vibration sensor in the transmission body, and then the time-frequency domain eigenvalue is extracted from it to analyze and evaluate. Groups of samples collected at a fixed location are studied to reduce the measurement error. On this basis, multiple samples obtained on different locations are studied in detail. The results show that the fault characteristics contained in the vibration signals from different measure locations are different, so the best location can be chosen to better characterize various fault characteristics. It lays the foundation for fault diagnosis based on vibration signals and improves the accuracy of fault diagnosis.

Key words: transmission fault diagnosis, vibration sensor, measure locations, vibration signals, time-frequency domain eigenvalue