Multi-mode collision avoidance closed-loop control system
by Xuewu Ji; Cong Fei; Tao Xu; Xiangkun He
International Journal of Vehicle Design (IJVD), Vol. 83, No. 2/3/4, 2020

Abstract: Autonomous vehicles are a research area of active interest. Collision avoidance system (CAS) is one of the central concerns to provide security protection for autonomous vehicles. This paper proposes a multi-mode collision avoidance system (mCAS), which combines a trajectory prediction module, a risk assessment module and a motion planning module into the closed-loop system. At each step, the trajectory prediction module predicts the trajectories of the vehicle and surrounding vehicles. The risk assessment model calculates the collision probability and chooses reasonable control mode. Then the motion planning module designs the desired deceleration profile based on it. The car takes the first step of the planned deceleration and repeats this cycle, achieving closed-loop control. The mCAS is tested in a closed-loop simulation setup and the results show that the proposed mCAS is of good effectiveness and feasibility, which can significantly reduce collision probability as well as false alarms.

Online publication date: Mon, 17-May-2021

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