A way to detect the quality of main retarder in automobile drive shaft with vibration analysing

As a part of comprehensive estimate method, this article describes a new way to evaluate the quality of the main retarder in automobile´s drive shaft. The proposed system uses vibration signal analysis instead of the noise signal analysis with the main retarder. It performs the wavelet transform with the collected vibration signal of the drive shaft shell and analyses it by using the tool of MATLAB. A simulated signal is taken into the system and analysed using the method aforementioned as an example. According to the analysing results, the conclusions for evaluating the quality of main retarder can be drawn more rapidly and rationally.