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Trace prediction control method for autonomously driven vehicle based on traffic signal lamp

A technology of traffic lights and autonomous driving, applied in the field of automobiles, which can solve the problems of engine and brake system wear, increased vehicle fuel consumption, red traffic lights, etc., to achieve the effect of reducing the number of stops, improving fuel economy, and improving passing capacity

Active Publication Date: 2015-11-11
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the management of advanced intelligent traffic systems is very expensive in practice; turn red
This lack of future knowledge of traffic light changes over time results in increased vehicle fuel consumption, travel time, and wear on the engine and braking system

Method used

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  • Trace prediction control method for autonomously driven vehicle based on traffic signal lamp
  • Trace prediction control method for autonomously driven vehicle based on traffic signal lamp
  • Trace prediction control method for autonomously driven vehicle based on traffic signal lamp

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Experimental program
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Embodiment Construction

[0037] The steps of the present invention are:

[0038] (1) Information collection: the self-driving vehicle collects the speed information of the current vehicle and the vehicle in front; collects the road conditions within the predicted distance, including detecting the intersection of the road ahead, the position of the traffic light ahead and the speed limit of the road traffic; obtains the status of the traffic signal light at the intersection and the passage The time is used for subsequent optimization solution;

[0039] (2) Vehicle dynamics modeling: based on the collected speed information of the current vehicle Based on the vehicle driving force and braking force is the control variable, the vehicle speed and displacement As a state variable, the dynamic equation of the vehicle can be obtained according to the longitudinal dynamics of the vehicle:

[0040] (1)

[0041] in, is the vehicle weight, The resistance of the vehicle running process, including...

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PUM

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Abstract

A trace prediction control method for an autonomously driven vehicle based on a traffic signal lamp belongs to the technical field of an automobile. The invention aims to provide the trace prediction control method for the autonomously driven vehicle based on the traffic signal lamp, wherein trace prediction control is performed on the autonomously driven vehicle in real time based on information of the traffic signal lamp, thereby maximally reducing the number of stoppage times and realizing energy saving and emission reduction effects. The trace prediction control method comprises the steps of acquiring information, performing dynamic modeling on an automobile, and performing online optimization on a trace planning control problem of the autonomously driven vehicle. The autonomously driven vehicle according to the invention can optimize a speed trace in a prediction distance according to the information of the traffic signal lamp, so that the vehicle smoothly passes through an intersection and furthermore the number of stoppage times of the vehicle is reduced.

Description

technical field [0001] The invention belongs to the technical field of automobiles. Background technique [0002] Due to the rapid increase in car ownership, road traffic problems are becoming more and more serious, and the traffic environment is gradually deteriorating. Traffic congestion not only makes exhaust emissions become an important factor affecting urban air quality, but also causes waste of time and resources. In order to alleviate the pressure of urban road traffic, cope with increasingly stringent emission standards, and improve the fuel economy of automobiles, some automobile companies at home and abroad have successively developed engine quick start / stop systems. However, in urban traffic with frequent starts and stops, although the application of engine start-stop technology not only brings obvious fuel-saving effects, but also plays a very positive role in reducing exhaust emissions, it will inevitably cause damage to the engine, and the automatic The maint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/105B60W30/18
CPCB60W30/18072B60W40/105B60W2720/10
Inventor 陈虹李超郭露露刘奇芳卢晓晖
Owner JILIN UNIV
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