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Hierarchical Vehicle Active Collision Avoidance Based on Potential Field Method
Technical Paper
2021-01-7038
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, a closed loop path planning and tracking control approach of collision avoidance for autonomous vehicle is proposed. The two-level model predictive control (MPC) is proposed for the path planning and tracking. The upper-level MPC is designed based on the simple vehicle kinematic model to calculate the collision-free trajectory and the potential field method is adopted to evaluate the collision risk and generate the cost function of the optimization problem. The lower-level MPC is the trajectory-tracking controller based on the vehicle dynamics model that calculates the desired control inputs. Finally the control inputs are distributed to steering wheel angle and motor torque via optimal control vectoring algorithm. Test cases are established on the Simulink/CarSim platform to evaluate the performance of the controller. The simulation results demonstrate that the proposed control has satisfactory path tracking performance and could avoid the potential collisions effectively during the high way driving.
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Citation
Zeng, J., Ren, Y., and Zheng, L., "Hierarchical Vehicle Active Collision Avoidance Based on Potential Field Method," SAE Technical Paper 2021-01-7038, 2021, https://doi.org/10.4271/2021-01-7038.Also In
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