Feedback control design method for reducing traffic congestion

A technology of feedback control and design method, applied in the field of automation, can solve problems such as traffic congestion, improper design, and too many intersections on arterial roads and arterial roads

Active Publication Date: 2018-08-21
广州海协知识产权服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest disadvantage of cars is that they take up road space, coupled with insufficient road capacity, improper design, and too many interchanges, resulting in frequent traffic congestion in urban areas
[0004] With the introduction of intelligent transportation system, that is, the use of advanced electronic information, communication, automa

Method used

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  • Feedback control design method for reducing traffic congestion
  • Feedback control design method for reducing traffic congestion
  • Feedback control design method for reducing traffic congestion

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Experimental program
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Embodiment Construction

[0102] Step 1, establish the state space model of urban road intersection, the concrete method is:

[0103] First, collect vehicle data at an intersection that is prone to congestion, and use the data to establish a state-space model of the number of road cars, in the following form:

[0104] x(k+1)=A(k)x(k)+B(k)u(k),

[0105] Among them, x(k)=[x 1 (k),x 2 (k),...,x n (k)] T Indicates the number of vehicles on a certain road collected by the road sensor at time k, n indicates the number of roads considered, u(k)∈R r is the vehicle entering the intersection at time k or input vehicle, r is the number of intersections considered, R r is an r-dimensional real number column vector, and A(k), B(k) represent constant matrices of appropriate dimensions collected by sensors at time k. Considering the positive definiteness of the number of road traffic vehicles, that is, x(k), u(k) is always non-negative, here it is assumed that the constructed road traffic control system is a po...

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Abstract

The invention discloses a feedback control design method for reducing traffic congestion. The method comprises the following steps: 1, a state space model of an urban road intersection is built; 2, matrixes A(k) and B(k) are designed; 3, as the number x(k) of vehicles at the intersection and the incoming vehicle u(k) are constrained, constrained conditions for meeting the road vehicle number and the incoming vehicles are designed; 4, the minimum performance index for model prediction control is designed; and a model prediction control state feedback control law for road traffic vehicle information is designed. Through means such as road data acquisition, model building, constraint control and performance analysis, the congestion problem caused by heavy traffic in a primary road can be relieved, and on the premise of ensuring steady and safe running of vehicles at the urban road intersection, the control effects are good.

Description

Technical field: [0001] The invention belongs to the technical field of automation, and proposes a state feedback control design method for reducing the phenomenon of urban intersection road traffic congestion. Through model predictive control, constraint control, performance optimization analysis, control law design and other technologies, it can effectively control the number of vehicles at intersections prone to congestion, reduce road congestion, and can be used in the road transportation industry. Background technique: [0002] Traffic congestion has become a worldwide problem and has attracted much attention, and many countries are troubled by this problem to varying degrees. Traffic congestion will increase traffic delays, reduce driving speed, and even lead to urban traffic paralysis. During the congestion period, the fuel consumption and exhaust emissions of vehicles will be increased, which will aggravate the energy shortage crisis and environmental degradation. ...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 李士成张俊锋陈云李苗
Owner 广州海协知识产权服务有限公司
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