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Method for building signal control model for urban traffic network crossroad

A technology for intersection and signal control, which is applied in traffic control systems, control traffic signals, traffic control systems for road vehicles, etc., can solve problems such as complex signal control at intersections, and achieve the effect of simplification of signal control

Inactive Publication Date: 2010-09-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the complex deficiency of the existing urban traffic network intersection signal control, the present invention provides a method for establishing an urban traffic network intersection signal control model

Method used

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  • Method for building signal control model for urban traffic network crossroad
  • Method for building signal control model for urban traffic network crossroad
  • Method for building signal control model for urban traffic network crossroad

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Embodiment Construction

[0031] With reference to the accompanying drawings, the present invention takes Dongguan Institute of Technology No. 3 intersection as an example, and describes in detail the method for setting up the urban traffic network intersection signal control model, and the concrete steps are as follows:

[0032] In the first step, the sampling period is set to 1 second, and the discrete state equation of the intersection at time (k+1) is:

[0033] x(k+1,3,1)=x(k,3,1)-g(k,3,1)*sign[t(3,1)-Ta]+g(k-56,2,1 )*sign[t(2,1)-Ta]*p(k-56,2,1)+g(k-56,2,11)*sign[t(2,11)-Ta]*p( k-56, 2, 1)

[0034] x(k+1,3,2)=x(k,3,2)-g(k,3,2)*sign[t(3,2)-Ta]+g(k-56,2,1 )*sign[t(2,1)-Ta]*p(k-56,2,2)+g(k-56,2,11)*sign[t(2,11)-Ta]*p( k-56, 2, 2)

[0035]x(k+1,3,3)=x(k,3,3)-g(k,3,3)*sign[t(3,3)-Ta]+g(k-56,2,1 )*sign[t(2,1)-Ta]*p(k-56,2,3)+g(k-56,2,11)*sign[t(2,11)-Ta]*p( k-56, 2, 3)

[0036] x(k+1,3,4)=x(k,3,4)-g(k,3,4)*sign[t(3,4)-Ta]+g(k-77,4,4 )*sign[t(4,4)-Ta]*p(k-77,4,4)+g(k-77,4,8)*sign[t(4,8)-Ta]*p( k-...

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Abstract

The invention discloses a method for building a signal control model for an urban traffic network crossroad for solving the technical problem that the existing urban traffic network crossroad is complex in signal control. The technical proposal is that the signal control model of the urban traffic network crossroad is built through the relationship between discrete state equations of the crossroad and adjacent crossroads according to requirements of the traffic signal control so that correlation and restrictive relation of the whole urban traffic network model are fully embodied. The model is built according to the requirements of the signal control by using the method of the invention, traffic signal timing is carried out on a single crossroad or unified optimizing timing is carried out on the whole traffic network signal lamps according to optimization indexes so as to dynamically analyze the urban traffic network, thereby simplifying the problem of the urban traffic network crossroad signal control.

Description

technical field [0001] The invention relates to a method for establishing a signal control model, in particular to a method for establishing a signal control model for an urban traffic network intersection. Background technique [0002] As an important technical means of urban traffic management, signal control is also the only direct and active control method of urban traffic flow. It is one of the key technologies to improve the urban traffic environment and solve the problem of urban traffic congestion. For traffic signal optimization control technology, domestic and foreign scholars have carried out a lot of theoretical research and exploration from two aspects of model and algorithm by using related theories and methods. Foreign scholars first started research work in this area in the 1960s. Among them, Webster and Miller respectively established a signal timing model and its calculation method aiming at the minimum average vehicle delay for fixed-period signal control...

Claims

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Application Information

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IPC IPC(8): G08G1/07G08G1/08G08G1/081
Inventor 史忠科
Owner NORTHWESTERN POLYTECHNICAL UNIV
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