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A simulation and test method for the function mode of electronic parking system

A system function, electronic parking technology, applied in general control systems, control/regulation systems, simulators, etc., can solve the problems of long modification duration and unqualified quality, and achieve short duration, convenient operation, and extended The effect of the test cycle

Active Publication Date: 2021-11-19
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems in this development method are: 1. The EPB switch sample itself has defects such as unqualified quality. If the EPB switch sample is connected to the ESC, once the control effect is not ideal, it cannot be judged that it is because the control program itself is not ideal. 2. If the EPB control effect is unsatisfactory, the EPB system needs to be stopped, and the control program must be manually modified and the EPB control program manually written into the ESC control circuit. The entire modification lasts for a long time. long

Method used

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  • A simulation and test method for the function mode of electronic parking system
  • A simulation and test method for the function mode of electronic parking system
  • A simulation and test method for the function mode of electronic parking system

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Embodiment Construction

[0087] The present invention provides a kind of simulation and testing method of electronic parking system functional mode, this method is based on rapid prototyping system and simulink control model realization, specifically comprises the following contents:

[0088] 1. Define the EPB function modes that need to be simulated, which are divided into 9 types:

[0089] 1. After lifting the EPB switch, the EPB performs clamping, and the EPB motor rotates forward. Release the EPB switch, EPB still performs clamping. When the motor loop current is greater than the forward current threshold, the motor stops rotating.

[0090] 2. After pressing the EPB switch, the EPB releases and the EPB motor reverses. Release the EPB switch, and the EPB still executes the release. When the motor loop current is greater than the reverse current threshold, the motor stops rotating.

[0091] 3. When the EPB performs clamping, if the clamping is not completed completely, press the EPB switch, and ...

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Abstract

The invention belongs to the technical field of electronic parking of passenger cars, and specifically relates to a simulation and testing method of a functional mode of an electronic parking system. This method uses a rapid prototyping system to replace the ECU, using a real EPB sample and a virtual electronic parking switch. The control method is as follows: the upper computer sends control signals (including EPB switch mode signals, etc.) The forward and reverse signals are sent to the driving end of the rapid prototyping system, and the driving end of the rapid prototyping system sends the EPB motor circuit current signal to the signal acquisition module, and the current digital signal is sent back to the mode control module by the signal acquisition module, forming a closed-loop control, driven by the rapid prototyping system The terminal drives the EPB to work to realize the emulation of the EPB function mode. The measurement of the EPB functional mode is realized by the clamp release time measurement module.

Description

technical field [0001] The invention belongs to the technical field of electronic parking for passenger cars, and specifically relates to a simulation and testing method for the functional mode of an electronic parking system. Background technique [0002] As the electronic parking system (hereinafter referred to as EPB) is more and more popular in passenger cars, in the early development of EPB, more and more attention is paid to the simulation and experiment of EPB function mode under different input states. [0003] At present, the usual development method is: connect EPB and electronic stability program (ESC unit) through hard wire, integrate EPB control software inside ESC, and hard wire connect EPB switch to ESC. The problems in this development method are: 1. The EPB switch sample itself has defects such as unqualified quality. If the EPB switch sample is connected to the ESC, once the control effect is not ideal, it cannot be judged that it is because the control pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 郭笑通李论
Owner CHINA FIRST AUTOMOBILE
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