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Trajectory Planning and Tracking for Four-Wheel-Steering Autonomous Vehicle with V2V Communication
Technical Paper
2020-01-0114
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Lane-changing is a typical traffic scene effecting on road traffic with high request for reliability, robustness and driving comfort to improve the road safety and transportation efficiency. The development of connected autonomous vehicles with V2V communication provide more advanced control strategies to research of lane-changing. Meanwhile, four-wheel steering is an effective way to improve flexibility of vehicle. The front and rear wheels rotate in opposite direction to reduce the turning radius to improve the servo agility operation at the low speed while those rotate in same direction to reduce the probability of the slip accident to improve the stability at the high speed. Hence, this paper established Four-Wheel-Steering(4WS) vehicle dynamic model and quasi real lane-changing scenes to analyze the motion constraints of the vehicles. Then, the polynomial function was used for the lane-changing trajectory planning and the extended rectangular vehicle model was established to get vehicle collision avoidance condition. Vehicle comfort requirements and lane-changing efficiency were used as the optimization variables of optimization function and the control of trajectory tracking can be obtained by using model predictive control (MPC) method. A lane-changing model based on steering characteristics and safety distance with the system of V2V communication and collaboration strategy was established. The lane-changing trajectory was simulated by MATLAB and the results showed that the lane-changing trajectory can safely realize the lane-changing behavior of 4WS autonomous vehicles.
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Ma, F., Shen, Y., Nie, J., Li, X. et al., "Trajectory Planning and Tracking for Four-Wheel-Steering Autonomous Vehicle with V2V Communication," SAE Technical Paper 2020-01-0114, 2020, https://doi.org/10.4271/2020-01-0114.Data Sets - Support Documents
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