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Measurement method and device for vehicular reaction type brake tester

A technology of braking test and testing device, which is applied in the direction of vehicle testing, machine/structural component testing, measuring devices, etc. Inconsistent dynamic test results, cleverly conceived effects

Inactive Publication Date: 2006-11-22
黄耀民 +2
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] Furthermore, according to the regulations of GB7258-2004, the brake test bench needs to detect the process difference at the same time, that is, the maximum difference between the left and right wheels of the same axle in the rising of the braking force. If the process difference is too large, it will cause the vehicle to slip and spin when braking. Serious consequences
However, the current static calibration method cannot calibrate the process difference of the brake test rig

Method used

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  • Measurement method and device for vehicular reaction type brake tester
  • Measurement method and device for vehicular reaction type brake tester
  • Measurement method and device for vehicular reaction type brake tester

Examples

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Embodiment 1

[0025] Embodiment one: see attached figure 2 to attach Figure 4 As shown, a test device of a motor vehicle reaction brake test bench includes a computer and a calibration instrument, the computer and the calibration instrument are connected through a communication interface, and the calibration instrument is composed of a microprocessor and a microprocessor. The communication interface circuit connected to the input and output ports is composed of two curve fitting circuits, and each curve fitting circuit includes a digital / analog conversion circuit connected to the output port of the microprocessor, an amplitude adjustment circuit and an impedance matching circuit.

[0026] In this embodiment, the communication interface adopts a USB port.

[0027] Set the curve on the computer in advance, and store the curve in the external memory of the computer. When using it, start the computer program, select the curve, and display the corresponding curve. After confirmation, send the...

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Abstract

The disclosed testing method for vehicle reaction type brake bench comprises: fitting two braking force curves by computer, generating electric signal varied with time by means of DAC, adjusting the amplitude and impedance of signal to match with the signal from bench sensor; sending obtained two path signal to bench measuring system; comparing the result from former measuring system and known parameters to obtain the system error. This invention is efficient to both static and dynamic signal.

Description

technical field [0001] The invention relates to a testing method of a motor vehicle brake inspection device, in particular to a method for testing a motor vehicle reaction brake test bench. Background technique [0002] The detection of automobile braking performance, as one of the most important items in motor vehicle safety detection, has always been the focus of attention. At present, the drum reaction force automobile brake test bench is widely used in China, and computer control technology is generally used for the collection and processing of braking force data. For example, a common uniaxial reaction roller brake test bench consists of two sets of wheel braking force test units and a set of indicating control devices with the same structure. Each set of wheel braking force test unit is composed of a frame (some test benches integrate the left and right test units through the frame), driving device, roller group, lifting device, measuring devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/28B60T17/22G01M17/007
Inventor 黄耀民陈小平褚桂旸
Owner 黄耀民
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