Booming Noise Analysis and Control Strategy Optimization of an Electric Vehicle in Creep Condition
As the electric drive transmission system is rigidly connected,it shows a state of weak damping,which will make the transmission system booming of the pure electric vehicle (EV) under certain operating conditions.In this paper,the creep rumble issue of a pure EV was studied.The analysis and troubleshooting processes were systematically elaborated.It was found that the excessive torque fluctuation due to the torque fluctuation suppression instability is the cause of creep booming.On this basis,the potential mechanism of motor torque fluctuation suppression instability was analyzed and an im-proved active damping control strategy was proposed.In combination with the improved active damping control logic,the in-stability of motor torque fluctuation suppression is effectively controlled by limiting the upper limit of the active damping without modifying transmission structure.The actual effects of the new active damping control method for the rumble issues was also validated through real vehicles tests.This study provides a reference for resolving such issues.
vibration and waveelectric vehicle (EV)transmission systemactive damping controltorque fluctuationtorque controlbooming
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维普
