Analysis on coupled vibration characteristics of electric vehicle's in-wheel motor with random excitation
The vibration of the electric vehicle driven by the in-wheel motor is coupled with the electromagnetic force and the random excitation of the road surface.In this article,the in-wheel motor with the radial electromagnetic force is considered as the natural vibration system,in order to set up the quarter vibration model of the electric vehicle.In combination with the motor's working characteristics and with the random excitation of the road surface taken into account,the PSD analysis is used for theoret-ical analysis and simulation on the dynamic response of the suspension's spring dynamic deflection and spring load mass accelera-tion under different operating conditions.The results show that the dynamic response generated by the superposition of internal and external excitations will multiply,and resonance is most likely to occur near 1 and 8 Hz.
random excitationin-wheel motorcoupled vibrationradial electromagnetic force
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