Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Suspension automatic control method and system for vehicle collision avoidance

An automatic control system and vehicle technology, applied in suspension, elastic suspension, vehicle components, etc., can solve the problems of axle load transfer, affecting braking comfort, long braking distance, etc., to reduce braking distance, improve The degree of axle load transfer and the effect of improving comfort

Active Publication Date: 2020-06-30
摩登汽车有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This utility model patent adjusts the height of the suspension system through the collision warning signal sent by the collision warning system to avoid personal injury, but its braking distance is long, and the phenomenon of axle load transfer and vehicle nodding may occur during braking. Comfort when braking

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
  • Suspension automatic control method and system for vehicle collision avoidance
  • Suspension automatic control method and system for vehicle collision avoidance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]When the vehicle is driving on the expressway at a speed of 80km / h, the distance between the vehicle and the vehicle in front is kept above 50m, and the speed is >45km / h, the sensing module 1, active braking module 2 and active suspension module 3 are in standby state , the perception module 1 monitors the state of obstacles in front of the vehicle, and at this time, the pre-collision time (TTC) between the vehicle and the obstacles in front is more than 3s. In this embodiment, the first warning preset threshold of the vehicle is 1.1s, the second warning preset threshold is 0.7s, the suspension travel preset value is 8mm, the front suspension compression damping force preset value is 3200N, and the rear suspension stroke preset value is 3200N. The preset value of suspension tensile damping force is 280N.

[0045] When the front vehicle encounters traffic jams and other situations and performs emergency braking, the distance between the vehicle and the vehicle in front is...

Embodiment 2

[0048] When the vehicle is driving on the expressway at a speed of 100km / h, the distance between the vehicle and the vehicle in front is kept above 80m, and the vehicle speed is >45 km / h, the sensing module 1, active braking module 2 and active suspension module 3 are in the standby state respectively , the perception module 1 monitors the state of obstacles in front of the vehicle, and at this time, the pre-collision time (TTC) between the vehicle and the obstacles in front is more than 3s. In this embodiment, the first warning preset threshold of the vehicle is 1.0s, the second warning preset threshold is 0.6s, the suspension travel preset value is 5mm, the front suspension compression damping force preset value is 3000N, and the rear suspension stroke preset value is 3000N. The preset value of suspension tensile damping force is 260N.

[0049] When the vehicle in front performs emergency braking, the vehicle speed will be reduced to 70km / h, the distance between the vehicle ...

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 discloses a suspension automatic control method and system used for vehicle collision avoidance. The method comprises the steps that firstly, a system is standby; secondly, a sensing module (1) monitors the obstacles in front of a vehicle; thirdly, when a TTC meets the first early warning preset threshold value, the fourth step is executed, otherwise, monitoring continues; fourthly,an active suspension module (3) adjusts the suspension stroke and the front and back suspension damping force; fifthly, when the TTC meets the second early warning preset threshold value, the sixth step is executed, otherwise, the seventh step is executed; sixthly, an active brake module (2) actively pressurizes and brakes until the TTC is increased to the outside of the second early warning preset threshold value range or braking is carried out, and the eighth step is executed; seventhly, the active suspension module recovers to the state before receiving a collision early warning signal; andeighthly, the system becomes silent, and the first step is executed. During collision early warning, the suspension damping force and the stroke are automatically adjusted to the optimal brake response state, the posture in vehicle brake is kept, the brake distance is reduced, the collision is prevented, and the brake comfort is improved.

Description

technical field [0001] The invention relates to a vehicle control system and method, in particular to a suspension automatic control method and system for vehicle collision avoidance. Background technique [0002] With the rapid development of vehicle automation technology, users have higher and higher requirements for vehicle driving safety, and automatic emergency braking systems (hereinafter referred to as AEB systems) have been widely used in existing vehicles. At present, the AEB system in the prior art only controls the braking system for emergency braking. During emergency braking, in order to consider the driving experience of the vehicle's comprehensive comfort, the suspension system and vehicle attitude of the vehicle cannot be adjusted to the best state, resulting in The overall braking distance of the vehicle is longer, which is not conducive to the safe driving of the vehicle. [0003] Chinese utility model patent ZL 201420006873.9 discloses an adaptive crash h...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B60T7/12B60G17/018B60G17/0195B60G17/016
CPCB60G17/016B60G17/018B60G17/0195B60G2400/204B60G2400/823B60G2600/182B60T7/22
Inventor 张博吴峰杰
Owner 摩登汽车有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com