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Dynamic calibration method of portable brake tester

A dynamic calibration and tester technology, which is applied in vehicle testing, machine/structural component testing, instruments, etc., can solve problems such as difficult dynamic calibration

Inactive Publication Date: 2009-02-25
广州市计量检测技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, domestic metrology and testing institutions only perform static calibration on the portable brake performance tester at this stage, and it is difficult to carry out dynamic calibration

Method used

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  • Dynamic calibration method of portable brake tester
  • Dynamic calibration method of portable brake tester
  • Dynamic calibration method of portable brake tester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Such as figure 1 As shown in Fig. 4, a kind of dynamic calibration method of portable brake tester, this method comprises the steps:

[0031] a, the acceleration sensor 15 of the brake tester 13 to be calibrated is installed on the turning platform 6;

[0032] b, the single-chip microcomputer 12 in the control processing module controls the driving mechanism through the motor driver 10, and the rotating shaft 5 is driven to rotate by the driving mechanism;

[0033] c, the angle sensor 9 transmits the angle signal of the rotating shaft 5 measured at different times to the PC 11, and the brake tester 13 transmits the acceleration signal measured at different times to the PC 11;

[0034] d. The PC 11 calculates the actual deceleration-time curve according to the input angle signal, and the PC 11 calculates the actual deceleration-time curve of the brake tester according to the input acceleration signal, and calculates the actual deceleration-time curve. The time curve is...

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Abstract

The invention discloses a dynamic calibration method for a portable braking tester and comprises the following steps: a. an acceleration sensor of the braking tester to be calibrated is mounted on a fixed mechanism of the acceleration sensor; b. a control processing module controls a driving mechanism, and a rotating shaft is driven by the driving mechanism to rotate; c. an angle sensor transmits angle signals of the rotating shaft tested at different times to the control processing module, and the braking tester transmits acceleration signals tested at different times to the control processing module; d. the control processing module calculates an actual deceleration-time curve according to the input angle signals and an actual measurement deceleration-time curve of the braking tester according to the input acceleration signals, and by comparing the two curves, calculates the MFDD indication error. The method has the advantages of exact and reliable calibration result, high calibration efficiency, high operability and repeatability, can guarantee the personal and property safety, and greatly reduces the cost of dynamic calibration.

Description

technical field [0001] The invention relates to a dynamic calibration method of a portable brake tester. Background technique [0002] The dynamic calibration of the portable brake performance tester can theoretically be carried out according to Article 7.2 of JJF1168-2007 "Calibration Specifications for Portable Brake Performance Testers", that is, select a test vehicle with stable performance, and adjust the speed of the vehicle according to the requirements of the relevant instructions. Take into account the school's portable brake performance tester and install it on the test vehicle, and connect it to the pedal switch. [0003] The test site and method shall be in accordance with the corresponding provisions of GB7258-2004 "Technical Conditions for Motor Vehicle Operation Safety". [0004] When the vehicle speed is about 30km / h and 50km / h, perform the braking test, repeat the measurement 3 times, and calculate the indication error of the fully emitted average decelerat...

Claims

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Application Information

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IPC IPC(8): G01M17/007
Inventor 李想堂周伦彬
Owner 广州市计量检测技术研究院
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