This study describes a cooperative chassis control system that controls longitudinal motion in accordance with the yaw movement for electric vehicles. This system can be used to improve vehicle agility and stability using the integration of torque distribution unit and electronic stability control (ESC). Moreover, this system can assist drivers smoothly navigate through a curve before ESC intervention. The structure of the proposed control system is fundamentally a model following controller, thereby making the vehicle follow the desired instantaneous handling characteristics by regulating the feedforward of the cornering stiffness, state feedback of longitudinal acceleration, and front and rear drive ratios. Experiments are performed to demonstrate the effectiveness of the proposed control system. The maximum steering angle during cornering is confirmed to be significantly reduced with proper deceleration/acceleration control and adjustment of the drive torques of the front and rear axles. Moreover, trajectory tracking can be significantly improved. The proposed control strategy can be used to assist intelligent vehicles to plan a reasonable trajectory, thereby enabling these vehicles to safely and rapidly pass corners or avoid obstacles while ensuring safety.
Cooperative chassis control system of electric vehicles for agility and stability improvements
IET Intelligent Transport Systems ; 13 , 1 ; 134-140
2019-01-01
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
acceleration control , model following controller , longitudinal acceleration , front drive ratio , torque control , cooperative chassis control system , road safety , ESC intervention , collision avoidance , electric vehicles , vehicle dynamics , feedforward , road vehicles , vehicle stability improvement , torque distribution unit , intelligent vehicles , motion control , rear drive ratio , maximum steering angle , electronic stability control , longitudinal motion control , mechanical stability , cornering stiffness feedforward regulation , yaw movement , elastic constants , state feedback , vehicle agility improvement , drive torque adjustment , deceleration control
Cooperative chassis control system of electric vehicles for agility and stability improvements
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