Check patentability & draft patents in minutes with Patsnap Eureka AI!

Drive-by-wire redundancy brake control system for heavy-duty vehicle and fault-tolerant control method thereof

A brake control and redundant control technology, applied in the direction of brakes, brake-by-wire brakes, vehicle components, etc., can solve the problem of long response time of the brake control system, failure to meet the development needs of intelligent and unmanned vehicles, and difficult space layout and other issues to achieve the effect of improving system reliability, satisfying high reliability, and realizing fault-tolerant control

Active Publication Date: 2021-10-29
CHINA NORTH VEHICLE RES INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This control method has caused problems such as long response time of the brake control system and difficult space layout, and cannot meet the development needs of intelligent and unmanned vehicles in the future.

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
  • Drive-by-wire redundancy brake control system for heavy-duty vehicle and fault-tolerant control method thereof
  • Drive-by-wire redundancy brake control system for heavy-duty vehicle and fault-tolerant control method thereof
  • Drive-by-wire redundancy brake control system for heavy-duty vehicle and fault-tolerant control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a heavy-duty vehicle brake-by-wire redundant brake control system, which enables the system to have a fault-tolerant control function while satisfying the brake-by-wire control function, and can ensure that the vehicle brakes when a branch fails. The normal operation of the control system improves the reliability of the braking control system of heavy-duty vehicles.

[0039] The brake control system includes: an oil supply subsystem, a control valve group and an executive component connected in sequence through a hydraulic oil circuit; wherein, the output oil port of the oil supply subsystem is connected with the input oil port of the control valve group, and the control valve group The output oil port is connected with the input oil port of the actuator;

[0040] In this example, if figure 1 As shown, the oil supply subsystem consists of two oil supply modules, each oil supply module includes: brake oil pump 1, accumulator 4 and overflow valve...

Embodiment 2

[0045] Different from Example 1, in this example, if figure 2 As shown, the oil supply subsystem is composed of an oil supply module, which simultaneously supplies oil to the two control modules and the two controlled brake cylinders 3;

[0046] When the control system works normally, neither the normally open electromagnetic switch valve 6 nor the normally closed electromagnetic switch valve 7 is energized, and the pressure of the two brake cylinders 3 is directly controlled by the two-way proportional solenoid valve 2; When the pressure is abnormal, the normally closed electromagnetic switch valve 7 of this branch is energized and disconnected, and the normally open electromagnetic switch valve 6 is energized and closed, and the branch with normal pressure in the control system (the pressure is normal within the set threshold) Two brake oil cylinders 3 supply oil.

Embodiment 3

[0048] Different from Embodiment 2, in this embodiment, such as image 3 As shown, the outlets of the two proportional solenoid valves 2 in the control valve group are respectively connected to the input port of the hydraulic control logic valve 8 through the hydraulic oil circuit (that is, the hydraulic control logic valve 8 replaces the normally open electromagnetic switch valve 6 and the normally closed electromagnetic valve The switch valve 7 and the sensitive chambers at both ends of the hydraulic control logic valve 8 are respectively connected to the two input oil ports. The spool of the hydraulic control logic valve 8 can move to the lower pressure side according to the hydraulic pressure, and the lower pressure side The input oil port is disconnected from the output oil port, and the input oil port on the side with higher pressure is connected to the output oil port); the output oil port of the hydraulic control logic valve 8 is respectively connected to the two brake ...

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 drive-by-wire redundancy brake control system for a heavy-duty vehicle. The drive-by-wire redundancy brake control system comprises an oil supply subsystem, a control valve set and an execution assembly which are sequentially connected through a hydraulic oil way. the control valve set comprises more than two proportional electromagnetic valves and a redundancy control assembly; the execution assembly comprises more than two brake oil cylinders; an output oil port of the oil supply subsystem is simultaneously connected with more than two proportional electromagnetic valves, and the more than two proportional electromagnetic valves are respectively connected with more than two brake oil cylinders through the redundancy control assembly; the redundancy control assembly enables more than one path to be arranged between the oil supply subsystem and the execution assembly in an electric control or hydraulic control mode. According to the fault-tolerant control method, system redundancy and fault-tolerant control can be achieved in an electric control or hydraulic control mode, and the braking function of the vehicle is guaranteed.

Description

technical field [0001] The invention relates to the technical field of vehicle braking manipulation and control, in particular to a heavy-duty vehicle-by-wire redundant braking manipulation system and a fault-tolerant control method thereof. Background technique [0002] At present, the brake control system of most heavy-duty vehicles still adopts the form of mechanical-hydraulic control, and the output oil pressure of the hydraulic valve is controlled mechanically through the pedal to realize the control of the vehicle braking force. This control method causes problems such as long response time of the brake control system and difficult space layout, and cannot meet the development needs of intelligent and unmanned vehicles in the future. The electro-hydraulic brake control system can satisfy the control-by-wire control of the vehicle, but on the basis of realizing the control-by-wire brake control, how to ensure that the vehicle still has an effective brake control functio...

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 Applications(China)
IPC IPC(8): B60T13/66B60T13/68
CPCB60T13/662B60T13/686B60T2270/82
Inventor 简洪超顾宏弢毛福合潘嘉明罗小梅
Owner CHINA NORTH VEHICLE RES INST
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com