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Adaptive ILC (iterative learning control) based coordinated control method for urban main roads

A technology of iterative learning control and self-adaptive iteration, applied in traffic control systems, traffic control systems of road vehicles, instruments, etc., can solve the problems of not effectively utilizing the daily repetition characteristics of traffic demand changes and increasing calculations, and reduce real-time The amount of calculation, the effect is excellent, and the effect of improving traffic efficiency

Active Publication Date: 2018-09-14
ZHEJIANG UNIV OF TECH
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Problems solved by technology

However, these research results did not effectively use the daily repetition characteristics of traffic demand changes, and with the expansion of the road network scale, the calculation amount increased rapidly

Method used

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  • Adaptive ILC (iterative learning control) based coordinated control method for urban main roads
  • Adaptive ILC (iterative learning control) based coordinated control method for urban main roads
  • Adaptive ILC (iterative learning control) based coordinated control method for urban main roads

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Embodiment Construction

[0028] The present invention will be further described below by means of the accompanying drawings and examples.

[0029] Such as figure 1 An urban road traffic area that uses the method of the present invention to include several consecutive adjacent intersections as shown, there are 3 intersections, expressed as {1,2,3} with a sequence of natural numbers, wherein the east-west road is the main road, and the north-south The road is a secondary trunk road or a branch road, and the east-west flow is generally significantly greater than the north-south flow. Define from west to east as the uplink direction of the arterial road, and from east to west as the downlink direction. The phases of traffic flow at each intersection are divided as follows: phase 1 is east-west going straight and turning right; phase 2 is east-west turning left and right; phase 3 is north-south going straight and right turning; phase 4 is north-south turning left and right.

[0030] A kind of method base...

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Abstract

An adaptive ILC (iterative learning control) based coordinated control method for urban main roads comprises: a. determining a key intersection: for the controlled main roads, the intersection with the largest traffic demand is determined as the key intersection; b, initializing the common signal period, green time ratio and phase difference; c, optimizing the green time ratio at key intersections; d, optimizing the green time ratio at non-critical intersections; e, performing circulation, and repeating steps c and d every 3-5 signal cycles. According to the control method, the intersections are taken as a control object and are coordinated in pairs by flow correlation between the upstream and downstream intersections, green time of each phase of a traffic light is calculated with an ILC method according to real-time vehicle flow conditions, and finally, closed-loop controller parameters are set in real time by an unfalsified strategy. The real-time calculation amount of main road control is reduced, the traffic efficiency of the main roads is improved, the effect is better than that with the traditional timing control scheme, and the effective method is provided for coordinated control of the urban main roads.

Description

technical field [0001] The invention relates to the technical field of traffic signal control, in particular to a coordinated control method for urban main roads based on adaptive iterative learning control. Background technique [0002] With the development of our country's social economy and the improvement of people's living standards, more and more cars have entered ordinary families, and problems such as traffic accidents, traffic congestion, environmental pollution and energy consumption have become increasingly serious. Travel time, travel safety, environmental quality and The quality of life is restricted by traffic conditions. [0003] Urban road traffic signal control is an extremely important aspect in modern urban traffic management, and its management and control level will directly affect the effect of urban road traffic operation. In the urban road network, the main road bears a huge traffic load. Therefore, to achieve good traffic signal control on the urban...

Claims

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Application Information

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IPC IPC(8): G08G1/081
CPCG08G1/081
Inventor 沈国江陈文峰杨曦刘志朱李楠刘端阳阮中远
Owner ZHEJIANG UNIV OF TECH
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