Abstract
In order to fully explore the potential of distributed drive electric vehicle, an integrated coordination control method consists of model predictive control (MPC) and speed tracking control for trajectory tracking is proposed in this paper. Firstly, the vehicle dynamics model including the slip ratio of each wheel is established. Then, a multi-objective function of the MPC controller is established based on the principle of minimum tracking error, control vector, and control increment. And the optimal control sequences are obtained by optimizing the solution and correcting the feedback of the MPC, which satisfy both the actual kinematic constraints and the actuator performance constraints. The steering angle signal is sent to the steering motor directly, and the torque signal of each wheel which is obtained by superimposing the torque value output by the MPC controller and speed tracking controller is sent to the driving motor simultaneously. Finally, the proposed method is validated by using MATLAB/Simulink-Carsim co-simulation on different roads with conventional and severe pavement conditions. The simulation results show that the designed integrated coordination controller has obvious advantages in terms of tracking accuracy and body attitude stability during the course of lane change.
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This research was funded by the Major Research and Development Project of Guangdong Science and Technology Department, grant number 2016B010132001.
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Li, H., Luo, Y. Integrated Coordination Control for Distributed Drive Electric Vehicle Trajectory Tracking. Int.J Automot. Technol. 21, 1047–1060 (2020). https://doi.org/10.1007/s12239-020-0099-3
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DOI: https://doi.org/10.1007/s12239-020-0099-3