Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Stability modeling method of time-delayed car-following model considering the impact of next-neighboring vehicles on traffic flow

A traffic flow model and a technology that affects traffic. It is applied in the traffic control system of road vehicles, traffic control systems, and special data processing applications. problems, to achieve the effects of making up for adverse effects, enhancing stability, and improving stability

Inactive Publication Date: 2017-11-28
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above model points out that the reaction time lag has an important influence on the car-following behavior of the vehicle, such as: the reaction time lag may lead to system instability and bifurcation phenomenon, that is to say, the above-mentioned prior art only provides a model, through The above-mentioned technologies cannot know how to solve the problem of system instability and bifurcation phenomenon. Therefore, the above-mentioned technologies do not provide a suitable solution to correct the adverse effects caused by the response time delay, thus making the model have certain advantages in practical applications. limitations
In addition, even if the existing technologies mentioned in the background technology are combined with other existing technologies, no corresponding solution can be obtained to solve the problems of system instability and bifurcation phenomenon

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stability modeling method of time-delayed car-following model considering the impact of next-neighboring vehicles on traffic flow
  • Stability modeling method of time-delayed car-following model considering the impact of next-neighboring vehicles on traffic flow
  • Stability modeling method of time-delayed car-following model considering the impact of next-neighboring vehicles on traffic flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] see figure 1 Shown is a specific embodiment of a method for modeling the stability of a time-delay car-following model that considers the impact of the next adjacent vehicle on traffic flow described in this application. The method described in this embodiment includes the following steps:

[0049] Step 101, establishing a micro-traffic flow model DOVM with reaction time lag:

[0050]

[0051] where x n (t) is the position of the nth car at time t, is the speed of the nth car at time t, is the acceleration of the nth car at time t, Δx n (t)=x n+1 (t)-x n (t) represents the distance between two consecutive vehicles, a is the sensitivity coefficient, τ is the reaction time lag, including the driver's reaction time lag and mechanical time lag, V(Δx n (t),Δx n+1 (t)) is dependent on the distance between adjacent vehicles Δx n (t) and the head-to-head distance Δx of the next adjacent vehicle n+1 (t) optimized speed function;

[0052] Step 102. Considering the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a modeling method considering the influence of sub-adjacent vehicles to traffic flow time lag car-following model stability. The modeling method includes that a microscopic traffic flow model DOVM (as shown in the description) including reaction time lag is established; the influence of sub-adjacent vehicles to traffic flow is considered, and an optimal speed function V(Deltax<n>, Deltax<n>+1)=(1-p) U (Deltax<n>) + pU (Deltax<n>+1) is selected, the optimal speed function is obtained through measured data fitting, wherein 0<=p<1 / 2, and an influencing factor representing the sub-adjacent vehicles refers to U(Deltax<n>)=16.8[tanh0.0860(Deltax<n>-25)+0.913]; a new traffic flow model GDOVM is established and stability analysis is carried out, the optimal speed function is put into the microscopic traffic flow model DOVM including reaction time lag and the new traffic flow model GDOVM is obtained, and according to the critical stability conditions, the influence of the reaction time lag and the sub-adjacent vehicle influencing factors to the system stability area can be obtained.

Description

technical field [0001] The present application relates to the technical field of traffic flow control methods, in particular, to a stability modeling method of a time-delayed car-following model considering the impact of the next adjacent vehicle on traffic flow. Background technique [0002] Transportation is the lifeblood of the national economy. The modernization of the transportation system and the advancement of traffic management are one of the important symbols to measure the modernization of a country. With the development of the economy and the progress of science and technology, the rapid development of the transportation industry can not only promote the exchange of materials and people, shorten travel time, improve work efficiency, but also make important contributions to social and economic development. However, the rapid development of transportation has also brought many problems, such as: traffic congestion, traffic accidents, environmental pollution, etc., w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/00G06F17/50
CPCG06F30/20G06F30/367G08G1/00
Inventor 靳艳飞徐猛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com