Research on Coordinated Control of Semi-active Suspension of Intelligent Chassis and Ground Tangential Force

doi:10.3901/JME.2025.14.233

Abstract

Abstract: To improve the ride comfort of intelligent electric vehicles and address the increasing incidence of passenger motion sickness, a chassis coordination control algorithm combined with longitudinal wheel force control was proposed. The algorithm utilized the force characteristics of the suspension mechanism to achieve better chassis control effect. It can change the vertical force effect on the vehicle body generated by the ground tangential force of the wheels when the semi-active suspension cannot generate the required force. Took the distributed drive electric vehicle as the research object, the semi-active suspension dynamic model and the motion sickness analysis model are established, and the action mechanism of the ground tangential force change on the vertical motion of the vehicle is studied. Based on this, a coordinated control algorithm of semi-active suspension and tangential force of ground for distributed drive vehicle is proposed. The simulation results show that compared with the semi-active suspension using the skyhook control strategy, the proposed algorithm can effectively reduce the vertical vibration acceleration level of the body and the incidence of motion sickness, and improve the driving and riding comfort of the intelligent chassis vehicle.

Key words: intelligent chassis, semi-active suspension, motion sickness, ground tangential force control, skyhook control

CLC Number:

U463

CHEN Xiaokai, WANG Hongye, LIU Hongyu, LIU Xiang. Research on Coordinated Control of Semi-active Suspension of Intelligent Chassis and Ground Tangential Force[J]. Journal of Mechanical Engineering, 2025, 61(14): 233-242.

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