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

Electronic parking brake method and device

An electronic parking brake, electronic technology, applied in the direction of brake transmission, brakes, vehicle parts, etc., can solve the problem of unstable parking brake function, and achieve the effect of reliable electronic parking brake

Active Publication Date: 2020-05-12
TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing brake control methods are fully applicable to parking brake systems with self-locking mechanisms, but for mechanisms that cannot be self-locking (such as the above-mentioned electromechanical brakes), after the motor reaches the target position and the power is turned off, the thrust of the transmission mechanism is far away. If it is less than the reaction force at the caliper end, the actuator will reverse, the clamping force will be reduced to zero, the parking brake function will be unstable, and there will be safety hazards

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
  • Electronic parking brake method and device
  • Electronic parking brake method and device
  • Electronic parking brake method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An embodiment of the present invention provides an electronic parking brake method, which is applied to an electromechanical brake (the brake is a brake actuator whose screw nut transmission mechanism cannot realize mechanism self-locking), and the method can be executed by a vehicle-mounted processor ,Such as figure 1 As shown, the method includes the following steps:

[0036] S101: receiving a parking brake activation instruction.

[0037] The electromechanical brake starts to activate the electronic parking brake when it receives a command to activate the parking brake. Electronic parking brake process, such as figure 2 As shown, according to the changing process of the clamping force, it is mainly divided into three stages: the idle stroke stage, the clamping force rising stage, and the clamping force maintaining stage.

[0038] The parking brake instruction is initiated by the user according to the braking demand. For example, after the user stops the vehicle, ...

Embodiment 2

[0087] An embodiment of the present invention provides an electronic parking brake device, which is used to implement the method shown in Embodiment 1, and the device can be executed by an on-board processor, such as Figure 8 As shown, the device includes:

[0088] The receiving module 41 is configured to receive an instruction to start the parking brake, and send the instruction to start the parking brake to the first judging module. The parking brake instruction is started by the user according to the braking demand.

[0089] The first judging module 42 is used to control the forward rotation of the motor, judge whether the brake caliper has reached the contact surface of the brake disc according to the first current value of the motor, and when the first current value has not reached the contact surface of the brake disc, The current value of the working current of the motor. When receiving the command to start the parking brake, the motor speed is controlled to reach the...

Embodiment 3

[0096] An electronic device provided by an embodiment of the present invention, such as Figure 9 As shown, the electronic device includes a processor 51 and a memory 52, the memory stores a computer program that can run on the processor, and when the processor executes the computer program, the method provided by the first embodiment above is implemented. step.

[0097] see Figure 9 , the electronic device further includes: a bus 54 and a communication interface 53 , the processor 51 , the communication interface 53 and the memory 52 are connected through the bus 54 . The processor 51 is used to execute executable modules, such as computer programs, stored in the memory 52 .

[0098] Wherein, the memory 52 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network ...

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 provides an electronic parking braking method and device, and relates to the technical field of vehicle braking. The method includes the steps that when a start parking braking command is received, a motor is controlled to rotate positively, whether brake calipers reach the contact surface of a brake disc or not is judged according to the first current value of the motor, and the first current value is the current value of the working current of the motor when the brake calipers do not reach the contact surface of the brake disc; when the brake calipers reach the contact surfaceof the brake disc, whether the brake calipers are tightly clamped or not is judged according to the second current value and the rotating speed value of the motor, and the second current value is thecurrent value of the working current of the motor when the brake calipers reach the contact surface of the brake disc; and when the brake calipers are tightly clamped, motor locking action is carriedout. According to the electronic parking braking method and device, reliability of electronic parking braking can be improved.

Description

technical field [0001] The invention relates to the technical field of automobile braking, in particular to an electronic parking braking method and device. Background technique [0002] The electromechanical brake uses electric energy as the energy source, transmits electric energy through wires, and transmits action signals through signal lines, which can efficiently and accurately control the completion of the braking action, which greatly improves the safety of the automotive braking system. Its structure is simple and space-saving Occupies a small, to better meet the needs of hybrid vehicles, electric vehicles. There is no hydraulic pipeline and brake fluid in the car braking system, and the energy is transmitted by wires, and the signal is transmitted by data lines, with few mechanical connections. It belongs to a type of Brake-By-Wire system. [0003] Existing brake control methods are fully applicable to parking brake systems with self-locking mechanisms, but for me...

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): B60T13/74
CPCB60T13/741B60T13/746
Inventor 颜丙杰李亮栾学功汪冬亮
Owner TSINGHUA UNIV
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