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

Intersection supply and demand coordinated optimization control method

A technology of collaborative control and control method, which is applied in the direction of traffic signal control, traffic flow detection, instrumentation, etc., and can solve problems such as failure to meet control requirements and consideration of the capacity of downstream exits at intersections, etc.

Inactive Publication Date: 2019-06-25
JILIN UNIV
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problem that the existing signal control system lacks the consideration of the capacity of the downstream exit of the intersection and cannot meet the control requirements under the full state of the traffic flow at the intersection, and proposes an intersection supply-demand coordination Optimal control method

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
  • Intersection supply and demand coordinated optimization control method
  • Intersection supply and demand coordinated optimization control method
  • Intersection supply and demand coordinated optimization control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0166] refer to Figure 5-a , Figure 5-b , Figure 6-a , Figure 6-b , Figure 6-c and Figure 6-d , in order to verify the effectiveness of the algorithm proposed in the present invention, with Figure 5-a Taking the four-way intersection shown in , as an example, the simulation experiment was carried out under the conditions of unsaturated, saturated, and oversaturated intersections. The simulation time is 1800s. During the experiment, the phase sequence of the intersection is as follows: Figure 6-a , Figure 6-b , Figure 6-c and Figure 6-d As shown, the label of the traffic flow is the same as Figure 5-a consistent.

[0167] The swarm intelligence algorithm adopted in this embodiment is the krill algorithm, the signal control scheme is regarded as an individual krill, and the variation of the signal scheme is regarded as the movement of krill. The search space of the krill algorithm (signal control scheme) should be determined by step 2 That is, the time-vary...

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 an intersection supply and demand coordinated optimization control method, so as to overcome the problem that consideration for the capacity of an intersection downstream exitlane is lacked currently, and the control requirements under an intersection traffic flow full state can not be met. The method comprises steps: 1) a traffic supply and demand time-varying coordinatedcontrol framework is built: (1) a traffic supply and demand time-varying model is built and (2) the supply and demand coordinated control problem is described; 2) specification of a supply and demandtime-varying coordinated control problem is carried out; and 3) optical solution of the supply and demand time-varying coordinated control problem is carried out: (1) a fitness function is built; and(2) cluster intelligence-based supply and demand coordinated control problem solution is carried out: a signal control scheme is initialized; fitness evaluation of the signal control scheme is carried out; variation of the signal control scheme is calculated; the signal control scheme is updated; iterative optimization calculation is carried out: the fitness evaluation of the signal control scheme is returned, fitness evaluation of the signal control scheme is carried out, and iterative calculation is carried out until the fitness function converges or reaches the maximum number of iterations; and a final signal control scheme is determined based on the maximum fitness value.

Description

technical field [0001] The present invention relates to a kind of control method in the research field of intelligent traffic, traffic signal control, more precisely, the present invention relates to a kind of intersection supply and demand cooperative optimization control method. Background technique [0002] Traffic signal control is an important means to improve the efficiency of intersection operation and relieve traffic congestion. At present, although TRANSYT, SCATS, SCOOT, OPAC, RHODES and other control systems have improved the traffic efficiency of the road network, when the intersection is saturated or oversaturated, it is easy to cause vehicle queuing to overflow, resulting in deadlock at the intersection or even large-scale traffic accidents. traffic congestion. The fundamental reason is that the existing research is mainly based on the optimal control method based on traffic demand, and lacks the consideration of the capacity of the downstream exit, that is, th...

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
IPC IPC(8): G08G1/01G08G1/07G08G1/08G06Q10/06G06Q50/26
Inventor 李志慧曹倩曲昭伟宋现敏陈永恒陶鹏飞魏巍马永建李海涛钟涛卓瑞高少杰田婧吴丛
Owner JILIN UNIV
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