Research On V2X-based Cooperative Optimization Control Method Of Vehicle Platoon And Intersection Signal

The rapid development and application of networked transportation and intelligent driving technology have brought new opportunities for improving driving safety,improving traffic congestion and environmental pollution,and also brought new challenges to traffic control theory and technology under new traffic patterns..V2X(Vehicle to Everything)communication technology is an important part of the future development of intelligent transportation systems,allowing vehicles to communicate with other vehicles,road users and road infrastructure.Traffic control on this basis has become a research hot spot in the field of traffic control in recent years.In this context,this paper is geared towards the actual problems and needs of future traffic control.Based on V2 X communication technology,with the goal of maximizing the efficiency of intersection traffic,the vehicle formation and intersection signal optimization control problems are studied.The main research work includes:1.Vehicle trajectory planning and formation control under fixed timing conditionsFirst,considering the different signal control states and vehicle queuing states of the intersection,combined with the queuing dynamic model of the intersection,with the goal of maximizing traffic efficiency,the decision-making process of vehicle acceleration,deceleration and uniform speed is given.Based on this,the design is designed.Vehicle trajectory planning model;further,a three-dimensional motion model of the vehicle is established,a comprehensive index is constructed with parameters such as vehicle spacing,speed difference,and acceleration difference,and the particle swarm optimization algorithm process is designed to solve the optimal control law of the formation vehicle;finally,the establishment MATLAB simulation model analyzes the performance and effectiveness of vehicle formation strategy.2.Vehicle platoon and intersection cooperative controlUnder the condition of fixed timing of intersections,considering the minimum and maximum speed limits of vehicles,there may be cases where some vehicles cannot pass through the intersection.To solve this problem,first,the process of judging whether the vehicle can pass the intersection is given,and the vehicle speed planning strategy is designed;further,under the condition of meeting the timing constraints of the intersection,the signal initiative when the phase green is extended and the phase red is shortened are designed respectively The control strategy maximizes the efficiency of intersection traffic;finally,the VISSIM simulation model of the intersection is established,and the effectiveness of the intersection's active control strategy and formation strategy is analyzed.