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Real-time measuring method for longitudinal attachment characteristic of tyre and pavement and measuring vehicle therefor

A real-time measurement and test vehicle technology, applied in the field of test vehicles, to achieve the effects of low test cost, strong real-time performance and wide test range

Inactive Publication Date: 2008-11-26
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This measurement method can only be limited to the determination of the adhesion characteristics between the tire and some typical road surfaces, and the accuracy and applicability of the test results also depend on the closeness of the simulated road surface constructed on the test bench to the actual road surface, or even Some road surfaces are difficult to accurately simulate in the laboratory, such as various sandy fields
Therefore, the existing method of measuring the variation characteristics of the adhesion coefficient between the tire and the road in the laboratory has strong limitations and deficiencies.

Method used

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  • Real-time measuring method for longitudinal attachment characteristic of tyre and pavement and measuring vehicle therefor
  • Real-time measuring method for longitudinal attachment characteristic of tyre and pavement and measuring vehicle therefor
  • Real-time measuring method for longitudinal attachment characteristic of tyre and pavement and measuring vehicle therefor

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Embodiment Construction

[0026] The present invention is described in further detail below with regard to the embodiment that accompanying drawing provides.

[0027] The real-time measurement method of tire and road surface longitudinal adhesion characteristic of the present invention is that the tire to be tested is installed on the wheel of the test vehicle that carries out road surface driving and carries out the mensuration under the actual road surface condition, installs a torque / torque on the drive wheel of test vehicle The speed sensor measures the driving torque and wheel speed on the wheel, according to the load N of the test wheel and the radius r of the wheel w , the adhesion coefficient between the wheel tire and the road surface can be calculated by the following formula (1); a speed sensor is installed on the driven wheel of the test vehicle to measure the wheel speed of the driven wheel, and the driven wheel rotation line The speed is regarded as the vehicle speed, and the slip rate of...

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Abstract

The related real-time test method for vertical adhesion feature between tyre and road comprises: arranging the testing tyre on a wheel of running test vehicle, detecting the drive torsion and wheel rate by sensor fixed on vehicle drive wheel, and obtaining the wheel rate omega of driven wheel by the sensor on driven wheel; according to the normal pressure N and wheel radius rw, calculating the adhesion factor mu and drive wheel trackslip rate lambda by formula (1) and (2). Wherein, it uses a data process SCM programmed as (1) and (2) to receive rate and torsion signal, calculate target value and send to note-book to record, store and display.

Description

technical field [0001] The invention relates to the measurement technology of the longitudinal adhesion characteristics of automobile tires and road surfaces, in particular to a real-time measurement method for the longitudinal adhesion characteristics of tires and road surfaces on an actual road surface and a test vehicle for implementing the measurement method. Background technique [0002] The variation characteristics of the longitudinal adhesion coefficient of automobile tires on different road surfaces is an important index to evaluate the performance of automobile tires, and it has an important impact on automobile performance. The change characteristics of the adhesion coefficient between the tire and different road surfaces is also an important original parameter in the simulation calculation of vehicle dynamics and braking performance, especially the slip rate corresponding to the maximum adhesion coefficient of the tire is an important parameter in the traction con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/02G01N19/00
Inventor 王庆年靳立强宋传学彭彦宏张侠赵硕
Owner JILIN UNIV
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