Design and Simulation Analysis of an Energy Regenerative Electromagnetic Shock Absorber for Vehicles

ABSTRACT An energy-regenerative shock absorber with damping adjustment function based on the electromagnetic induction principle is proposed for the problem of energy dissipation in the vibration of vehicle suspension systems. The structure of the shock absorber, the control system and the electrical system are designed, and the dynamic model of the suspension system with the energyregenerative electromagnetic shock absorber is built. The vibration response of the vehicle body, the frequency characteristic of the suspension system, and the energy-regenerative power of the electromagnetic shock absorber are analyzed. The results show that this electromagnetic shock absorber has good energy-regenerative effect on roads of different levels. Compared with the original hydraulic telescopic shock absorber, the vibration displacement, speed and acceleration of the vehicle body can be lowered significantly when the electromagnetic shock absorber is used with appropriate damping. The electromagnetic shock absorber has a compact structure, adjustable damping and energy-regenerative function, which can be used as a design reference for the electrification of the suspension systems in new energy vehicles in the future.