Vehicle adaptive cruise control method, device and system and automobile

A technology of adaptive cruise and control methods, applied in the field of systems and automobiles, devices, and vehicle adaptive cruise control methods, can solve problems such as small following time distance, prevent collision, ensure driving safety, and solve overshoot and response delay. effect of the problem

Inactive Publication Date: 2019-06-11
CHONGQING CHANGAN AUTOMOBILE CO LTD
View PDF9 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a vehicle adaptive cruise control, device, system and automobile to solve the proble

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
  • Vehicle adaptive cruise control method, device and system and automobile
  • Vehicle adaptive cruise control method, device and system and automobile
  • Vehicle adaptive cruise control method, device and system and automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] refer to figure 1 , the present invention provides a vehicle adaptive cruise control method, comprising:

[0045] Step 101, obtain the actual vehicle speed and actual acceleration of the vehicle, the actual vehicle speed of the target vehicle located in front of the vehicle, the actual following distance between the vehicle and the target vehicle and the expected following time input by the user, as well as the actual vehicle speed and the actual acceleration of the vehicle. acceleration.

[0046] Wherein, the target vehicle in front of the vehicle refers to the preceding vehicle in the same lane as the own vehicle and in front of the vehicle. The actual following distance between the vehicle and the target vehicle is sensed by a distance sensing device (such as a sensor), and the actual speed of the target vehicle is collected by the millimeter wave radar 1 installed on the vehicle.

[0047] The acquisition of the expected following time distance input by the user is...

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 vehicle adaptive cruise control method, device and system and an automobile in order to solve a problem of too small vehicle following time headway caused by acceleration control overshoot and response delay during vehicle following. The vehicle adaptive cruise control method comprises the steps of obtaining an actual vehicle speed and an actual accelerated speed, an actual vehicle speed of a target vehicle in front of a vehicle, an actual vehicle following distance between the vehicle and the target vehicle and an expected vehicle following time headway input by a user; determining a target accelerated speed of the vehicle according to the actual vehicle speed of the vehicle, the actual vehicle following distance, the actual vehicle speed of the target vehicle and the expected vehicle following time headway input by the user; determining whether the vehicle is in a starting crawling vehicle following condition or not according to the actual accelerated speedand the target accelerated speed; if the vehicle is in the starting crawling vehicle following condition, calculating an accelerated speed reducing amount according to the actual accelerated speed and the target accelerated speed; and controlling a brake system of the vehicle to perform braking moment control according to the accelerated speed reducing amount.

Description

technical field [0001] The invention relates to the field of automobile electrical appliances, specifically a vehicle adaptive cruise control method, device, system and automobile. Background technique [0002] When the vehicle follows the vehicle with Adaptive Cruise Control (ACC) in the stop-and-go traffic condition, if the vehicle in front starts to crawl with a small acceleration, in order to ensure the timeliness of following the vehicle, the vehicle also needs to quickly follow the vehicle in front to start and crawl , but it is necessary to quickly and accurately control the actual acceleration of the vehicle to enter a reasonable error area near the target acceleration value, so as to avoid the following distance from the vehicle in front being too large or too small. Existing ACC control strategies control the acceleration value of the vehicle by separately controlling the net output torque of the engine during start creep acceleration. However, since the engine and...

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): B60W30/16B60W10/06B60W10/18
Inventor 何博漆正刚
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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