Vehicle generator transmission shaft broken shaft fault detection method and device

Abstract

The invention provides a vehicle generator transmission shaft broken shaft fault detection method and device. The method comprises the following steps: detecting an engine crankshaft rotating speed signal and a generator rotor rotating speed signal in real time, and receiving the engine crankshaft rotating speed signal and the generator rotor rotating speed signal; performing first-order filtering denoising on the received engine crankshaft rotating speed signal and the generator rotor rotating speed signal, making a difference between the filtered engine crankshaft rotating speed signal and the filtered generator rotor rotating speed signal, and taking an absolute value of the difference value to obtain a speed difference absolute value; and if the speed difference absolute value exceeds a preset threshold value, determining that the generator transmission shaft is broken. According to the method, the transmission shaft can be maintained in time after being broken, the engine is stopped or the torque of the engine is limited, and major traffic accidents are effectively avoided.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of vehicle generator fault detection, and in particular to a method and equipment for detecting a broken shaft fault of a drive shaft of a vehicle generator. Background technique [0002] In order to meet the high-power electricity demand of the vehicle equipment, a high-power generator is installed at the flywheel end of the engine, and the generator rotor is rigidly connected with the engine crankshaft through the transmission shaft. Due to the long-term alternating bending stress and torsional stress during the operation of the generator, broken shaft faults may occur. At present, there is no effective detection method for the broken shaft of the transmission shaft, and the broken shaft will cause insufficient power supply for the equipment on the vehicle, and in severe cases may cause the vehicle to lose control and cause traffic accidents. Therefore, to develop a method and eq...

AI Technical Summary

Problems solved by technology

At present, there is no effective detection method for the broken shaft of the transmission shaft, and the broken shaft will cause insufficient power supply for the equipment on the vehicle, and in severe cases may cause the vehicle to lose control and cause traffic accidents

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