Measurement method and device for vehicular reaction type brake tester

A braking test and testing device technology, applied in vehicle testing, machine/structural component testing, measuring devices, etc., can solve problems such as vehicle sideslip, inability to calibrate the brake test bench, spinning, etc. Change the effect of inconsistent vehicle braking force test results

Inactive Publication Date: 2008-06-18
黄耀民 +2
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  • Abstract
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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

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Embodiment 1

[0025] Embodiment one: see attached figure 2 As shown in accompanying drawing 4, a kind of test device of motor vehicle reaction braking test bench comprises computer and calibration instrument, is connected by communication interface between described computer and calibration instrument, and described calibration instrument is composed of microprocessor, and calibration instrument. The input and output ports of the microprocessor are connected to a communication interface circuit and 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 correspondin...

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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 device, etc. The braking for...

Claims

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Application Information

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