Take a typical pure electric vehicle as object, analyzes its transient surge problem and control methods. Firstly, according to the constant mesh characteristics of the drive system, whole vehicle model was established considering motor rotor- gear transmission system, mechanism of surge phenomenon and transfer path analysis was derived. Then, from the perspective of the power transmission system, feed forward- feedback active control simulation based on the simplified model and parts of experiment were conducted. On this basis, optimization of the power train mount system was carried out from the facet of passive control. Finally, the simulation effect of the active- passive integrated control was validated based on whole vehicle platform. Results show that the whole vehicle model is suitable for the simulation and control of the electric vehicle’s surge problem; the active and passive combined control method can improve body surge situation, reduce the dynamic reaction force of mounting point and improve the ride comfort of vehicle.
Key words
electric vehicle /
transient vibration /
torsion vibration /
mounting system /
optimization
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