Method for controlling vehicle follow gallop movement speed

A technology of speed control and vehicle following, which is applied in adaptive control, general control system, control/regulation system, etc., can solve the psychological and physiological problems that are difficult to match the maximum traffic volume and reflect the driver's perception, reaction, and judgment. Behavioral characteristics, oversimplification, etc.

Inactive Publication Date: 2008-09-17
SOUTHEAST UNIV
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses simple stimulus-response characteristics, which is too simple to reflect the driver's perception, reaction, judgment and other psychological and physiological behavior characteristics during dri

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
  • Method for controlling vehicle follow gallop movement speed
  • Method for controlling vehicle follow gallop movement speed
  • Method for controlling vehicle follow gallop movement speed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] The implementation of the vehicle following method is mainly by the following steps, its flow chart is shown in Figure 7 .

[0070] A speed control method for vehicle following motion:

[0071] Step 1. Use the ultrasonic rangefinder of the rear car to collect the relative distance d between the front and rear cars for 3 consecutive times i 、d i+1 and d i+2 , the time interval of the relative distance collection of the two front and rear vehicles is Δt, and the first input ds is obtained from the relative distance of the front and rear two vehicles and the speed of the rear vehicle when the relative distance is collected, and the relative distance of the two front and rear vehicles three times d i 、d i+1 and d i+2 , the speed of the front and rear cars and the time interval Δt of the relative distance collection of the front and back two cars to obtain the acceleration lva of the front car and as the second input quantity, the specific method is as follows:

[00...

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 relates to a speed control method for car-following motions, which is characterized in that the acceleration lva is acquired by means of three times of the relative distances between a front car and a following car, the speeds of both the front and following cars, and the time interval Delta t in which the relative distances between the two cars, and used as a second input variable. Ds and lva act as two input variables of a fuzzy controller, and the acceleration of the following car is used as the output variable fva of the fuzzy controller; ds, lva and fva are respectively divided into seven fuzzy word sets, namely, minus large, minus middle, minus small, zero, plus small, plus middle, and plus large, which are respectively represented as nb, nm, ns, ze, ps, pm, and pb; the membership functions of the seven fuzzy word sets adopt the common triangle functions. The fuzzy inference rules of fuzzy controller adopt the 49 rules inducted in a rule table; the fuzzy set of the variable fva is calculated by use of the maximum-minimum approach; finally, the method of mass center is adopted to deblur the fuzzy sets of the output variable fva, thus obtaining the acceleration of the following car.

Description

technical field [0001] The invention relates to a vehicle following method based on fuzzy inference, which applies fuzzy logic to the control and decision-making of vehicle following. Background technique [0002] With the rapid development of road traffic, the study of driving behavior plays an increasingly important role in the improvement of traffic safety and behavioral ability. A correct understanding of how the driver manipulates the vehicle during driving is the basis for designing transportation devices and management solutions. The traditional car-following method is difficult to reflect the uncertainty and inconsistency of a series of psychological and physiological activities such as the driver's feeling, understanding, judgment, and decision. Many studies believe that there is a certain relationship between the stimulus of the leading vehicle and the response of the following vehicle in the process of vehicle following, that is, there is a certain causal relatio...

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): B60W30/16G05B13/02B60W30/165
Inventor 蒋珉柴干张雷韩艳娜
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap