A Design Method of Mobile Following Model Based on Acceleration Information
A mobile following model and design method technology, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problems of not considering the situation of changing lanes of driving vehicles, unable to simulate irrational driving behavior, and complex traffic micro-factors, etc. The effect of improving patency, reducing traffic congestion, and increasing average speed
Active Publication Date: 2017-09-22
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0004] (2) The scale of the network is huge, and the microscopic factors of traffic are complex
[0006] (4) The movement of the node is restricted by the road and can only move on the road
[0012] The design of the IDM mobile following model only considers the single-track situation, and does not consider the lane change of the driving vehicle. This model reflects a mobile following model in an absolutely ideal situation, and cannot simulate irrational driving behavior in the actual driving process. This is where the downside of the following model lies
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[0044] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0045] refer to figure 1 , a method for designing a mobile-following model based on acceleration information, comprising the following steps:
[0046] Step 1. Preset the reasonable boundary conditions of the current vehicle's driving speed;
[0047] Step 2. If the current vehicle speed v f greater than the front vehicle speed v l , then execute step 3; if v f less than or equal to v l , then go to step 4;
[0048] Step 3. According to the reasonable boundary conditions in step 1, the expected distance between the current vehicle and the vehicle in front, the effective length of the vehicle body, the expected relaxation time, the speed of the vehicle in front, and the maximum acceleration during deceleration, calculate the driving speed of the current vehicle as deceleration Reasonable boundary conditions at the time, so as to obtain the maximu...
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The invention discloses a design method of a moving following model based on acceleration information, which can better simulate the following situation of vehicle moving in an actual traffic scene. The present invention first proposes an acceleration-deceleration conversion mechanism, which adopts different movement following models according to different driving states (acceleration or deceleration) of the vehicle in front. On this basis, the present invention further designs two following models: an acceleration following model and a deceleration following model. The vehicle in front adopts the acceleration following model when it is accelerating, otherwise it adopts the deceleration following model. Compared with the existing following model, the following model design method of the present invention solves the phenomenon of speed jump when the vehicle is running during the simulation process, so that the acceleration and deceleration of the vehicle can be carried out smoothly, and the simulation cost can be effectively reduced. The situation of traffic congestion in the transportation network improves the smoothness of the road.
Description
technical field [0001] The invention relates to the technical field of simulating vehicle following models in Vehicular Ad-hoc Networks (VANETs), in particular to a design method for moving following models based on acceleration information. Background technique [0002] VANETs is a special mobile ad hoc network, which is of great significance to the research and development of intelligent transportation. In the actual VANETs network, it has the following salient features: [0003] (1) The high-speed movement of nodes changes, and the movement behavior of nodes is affected by obstacles such as road facilities, pedestrians, and vehicles in the actual traffic environment; [0004] (2) The scale of the network is huge, and the microcosmic factors of traffic are complex. [0005] (3) The density of nodes between road sections in the network is different. In the actual scene, the node density on the road section in the urban environment is relatively high, while the nodes on t...
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IPC IPC(8): G06F17/50
Inventor 刘峰王云谦
Owner NANJING UNIV OF POSTS & TELECOMM