Control strategy for connected vehicle platoon at signalized intersections
To improve the safety and traffic efficiency of vehicle platoon at signalized intersections,a signalized intersection control strategy for connected vehicle platoon in V2X environment is proposed.A control zone is set up upstream of the signalized inter-section,with the aim of optimizing the speed of the vehicle platoon for the lead vehicle to queue and evacuate the signalized inter-section.Considering the effect of speed variation on the longitudinal safety distance of the vehicle platoon,a distributed model pre-dictive method is introduced.A speed tracking control model for the platoon vehicles is established under the fixed following head-way control strategy.Weighted quadratic performance functionals are used to transform the speed tracking control problem into a convex quadratic programming problem that can be easily solved online.PreScan/Simulink softwore simulations are conducted to compare the signalized intersection control strategy with the traditional car-following strategy,to verify the effectiveness of the speed tracking control model.The results show that the proposed control strategy can avoid collision conflicts between vehicles and reduce the travel time of the platoon vehicles at signalized intersections,while ensuring safety and improving traffic efficiency.
万方数据
维普
