An Integrated Vibration Elimination System with Mechanical-Electrical-Magnetic Coupling Effects for In-Wheel-Motor-Driven Electric Vehicles

This study aims to improve the vehicle vertical dynamics performance in sprung and unsprung state for in-wheel-motor-driven electric vehicles (IWMD EVs) while considering unbalanced magnetic force effects. An integrated vibration elimination system (IVES) is developed, containing a dynamic vibration-absorbing structure between IWM suspension. It also includes an active suspension based on delay-dependent H∞ controller. Further, novel frequency-compatible tire (FCT) model constructed IVES accuracy. The mechanical-electrical-magnetic coupling effects of IWMD EVs are theoretically analyzed. A virtual prototype created by combining CATIA, ADAMS, MatLab/Simulink, resulting high-fidelity multi-body model, validating accuracy practicability. Simulations considered three different types time delay considerations were performed. Analyses frequency domains simulation results have shown that root mean square mass acceleration eccentricity significantly reduced via IVES, indicating improvement ride comfort suppression.