A method for improving reliability of epb based on piezoelectric ceramic sensor

A technology of piezoelectric ceramics and sensors, applied in the field of improving the reliability of EPB based on piezoelectric ceramic sensors, can solve the problem that the driver does not understand the braking effect, etc., and achieve the effect of small axial size, sensitive response and easy assembly

Active Publication Date: 2017-01-25
TIANJIN TRINOVA AUTOMOTIVE TECH CO LTD
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] But above-mentioned these devices or method all can not fundamentally solve the problem that the driver does not understand the braking effect after the parking brake that exists in the prior art

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
  • A method for improving reliability of epb based on piezoelectric ceramic sensor
  • A method for improving reliability of epb based on piezoelectric ceramic sensor
  • A method for improving reliability of epb based on piezoelectric ceramic sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] In the present invention, the lead screw transmission mechanism in the caliper type electronic parking brake of the prior art is changed, a piezoelectric ceramic sensor 20 is added therein, and the piezoelectric ceramic sensor 20 is guaranteed to have the axial direction required for piezoelectric conversion. Displacement, while ensuring that it and the wires are not in contact with the oil in the cavity, realize the conversion between mechanical energy and electrical energy, convert the pressure into an electrical signal, and convert the slope information obtained by the slope sensor into a voltage through the controller 8, and convert the This is used as a voltage reference value, compared with the electrical signal obtained by the piezoelectric ceramic sensor 20, to judge the braking effect when parking, if there is an abnormal braki...

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 method for improving reliability of an EPB (electrical park brake) based on a piezoelectric ceramic sensor. The method specifically comprises the following steps: 1 starting an electronic parking brake button by a driver, carrying out self-inspection by a controller, and carrying out initialized setting by a system; 2 obtaining a voltage value u1 increased on the basis of an initial voltage value after the voltage which is output is processed by a piezoelectric ceramic sensor through the controller, comparing the increased voltage value u1 with a reference voltage value uref1, and controlling the process when the increased voltage value u1 is smaller than the reference voltage value uref1; 3 controlling the process when the increased voltage value u1 is greater than or equal to the reference voltage value uref1. According to the method, the cost of the electrical park brake is not significantly increased. The piezoelectric ceramic adopted by the scheme is easy to get, and low in price, but the use reliability of the electrical park brake is greatly improved, so that the piezoelectric ceramic sensor is easy to assemble, small in axial size and sensitive in reaction.

Description

technical field [0001] The invention belongs to the technical field of vehicle dynamics control, and relates to a method for improving the reliability of an EPB based on a piezoelectric ceramic sensor. Background technique [0002] Usually, the parking brake is used to stabilize the vehicle after the vehicle has stopped, so as to avoid accidents caused by rolling when the vehicle is parked on a slope. [0003] The parking brake is mainly composed of a brake lever, a pull wire, a brake mechanism and a return spring. Long-term use will cause deformation of the return spring and elongation of the pull wire, and frequent operation of the pull rod will make the driver feel uncomfortable. Vehicle assembly and simplification of the parking brake system, and the development of an integrated caliper-type electronic parking brake (EPB, Electrical Parking Brake). In the current electronic parking brake system, most of the integrated caliper electronic parking brakes are used. The brak...

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
CPCB60T13/74B60T17/22
Inventor 李亮苗晓路高祥李晨风赵洵冉旭刘力福
Owner TIANJIN TRINOVA AUTOMOTIVE TECH 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