Modeling And Simulation Of Vehicle Platoon Following Behavior Under The Condition Of V2V

In recent years,the vehicle networking technology has developed rapidly.The V2V(vehicle-to-vehicle)car and car interconnection technology is a very important technology and its has important promotion value.A large number of literature studies have shown that V2 V technology allows vehicle and vehicle to “talk” with each other to share vehicle position and motion status information,expanding driver's “line-of-sight” range,and V2 V technology has great advantages in preventing collisions,improving road access efficiency,and reducing emissions.However,there are few studies about the V2 V on the influence of car-following model's stability,and the current car-following model that accurately characterizing the follow-up characteristics between vehicles rarely considers V2 V vehicle and vehicle communication.Aiming at the above problems,the paper establishes two kinds of vehicle platoon following models under the condition of V2 V based on the Newell model and FVD model respectively,a software simulation platform based on Matlab is established,and the theoretical and numerical analysis of the mechanism of V2 V technology to improve the safety and stability of traffic flow is carried out.First,this paper analyzed traditional car-following model,introduces parameter alpha to represent the driver's early response under the influence of V2 V communication equipment based on the Newell car-following model and FVD car-following model,and the V2 V car-following models with improved Newell model and FVD model were established respectively.And analyzed the driver's different degree of adaptability to V2 V vehicle equipment.Second,the linear stability of the two kinds of V2 V car-following models proposed in this paper is analyzed.Matlab is used to calculate the neutral stability of the two kinds of models under different parameter alpha.Comparing the neutral stability conditions of the two kinds of V2 V models with the traditional models,the advantages of the two kinds of V2 V models are verified.In addition,the drawing of hysteresis loop curves under different parameter alpha of the two kinds of V2 V models was completed,which verified theconsistency between the results of hysteresis loopback and neutral stable conditions.At the same time,the sensitivity analysis of the parameters of the V2 V car-following model with improved FVD model was also completed.Through the simulation,it was found that the parameter alpha and T under different conditions,the traffic flow sensitivity curve can intuitively reflect the impact of small disturbances on the V2 V model.And analyzed the nonlinear density wave that appears when the linear stability condition is not satisfied.It was found that after V2 V technology was introduced,the traffic flow was able to be free from interference and maintain a certain degree of stability under small disturbance conditions,especially under the condition of traffic congestion.At the same time,through the study found that the V2 V car-following model can reflect the change of traffic flow before and after the introduction of V2 V technology after this article introduces the representation of the driver's early response.Finally,based on the Matlab simulation platform built,a series of numerical simulations of the V2 V car-following model were completed,including the platoon's acceleration start,deceleration braking and the impact of accidental disturbance process on the traffic car-following system,the comparison with the FVD model was completed under these three conditions.The research results of this paper indicate that vehicle can obtain the traffic flow status in real time and change the vehicle's own operation in a targeted manner through V2 V technology,which can obviously improve the safety and stability of traffic flow.