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Measuring device for rotary inertia of steering wheel and measuring method thereof

A technology of moment of inertia and measuring device, applied in the field of automobile manufacturing, can solve the problems of inconvenient use and maintenance, high cost, complex structure, etc., and achieve the effects of simple structure, low cost and simple measurement method

Active Publication Date: 2009-09-16
CHERY COMML VEHICLE ANHUI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned measuring devices have to measure the moment of inertia of objects of various shapes, so their structures are relatively complicated, the cost is high, and the use and maintenance are inconvenient.

Method used

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  • Measuring device for rotary inertia of steering wheel and measuring method thereof
  • Measuring device for rotary inertia of steering wheel and measuring method thereof
  • Measuring device for rotary inertia of steering wheel and measuring method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the steering wheel moment of inertia measuring device of the present embodiment includes a rigid base 1 formed by fixedly connecting mutually perpendicular horizontal brackets 11 and mounting brackets 12, and an end is rigidly fixed under the horizontal bracket 11 to be fixed to be tested. The steel pipe 2 of the steering wheel; the mounting bracket 12 is provided with a mounting hole 14 for fixing the base 1, and an oblique reinforcing rib 13 is arranged between the mounting bracket 12 and the horizontal support 11; the steel pipe 2 is near the horizontal support 11 Two right-angle strain gauges 3 opposite to each other are attached to the position (the other right-angle strain gauge is not shown in the figure), and each strain gauge in the right-angle strain gauge 3 forms an angle of 45 degrees with the axis of the steel pipe 2; The right-angle strain gauge 3 is connected to a data acquisition unit with a strain measurement module (the data ...

Embodiment 2

[0024] The present embodiment is the measuring method of the steering wheel moment of inertia measuring device of the above-mentioned embodiment, comprising the following steps:

[0025] A. Calibrate the torsional stiffness of the steel pipe: a. Install the calibration disk on the end of the steel pipe; b. Apply a pulse force in the tangential direction to the calibration disk, and use the data acquisition unit to collect the torsional strain signal of the steel pipe; c. Calculate the torsional stiffness of the steel pipe , the torsional stiffness k of the steel pipe is given by the formula f 1 = 1 2 π * ( k m 1 ) 0.5 obtained, where m 1 is the moment of inertia of the calibration disc, f 1 is the res...

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Abstract

The invention aims to provide a measuring device with simple structure, low cost and convenient use and maintenance for the rotary inertia of a steering wheel and a measuring method thereof. The measuring device comprises a rigid substrate; the substrate is rigidly fixed with a steel pipe of which the end part can fix the steering wheel to be measured; at least one piece of rectangular strain gauge is adhered to the steel pipe, and each piece of strain gauge of the rectangular strain gauge forms an angle of 45 degrees with an axis of the steel pipe; and the rectangular strain gauge is connected with a data acquisition unit with a strain measurement module. The measuring method of the measuring device comprises two steps of marking the torsional rigidity of the steel pipe and measuring the rotary inertia of the steering wheel to be measured. The measuring device has the advantages of simple structure, low cost and failure rate, and convenient use and maintenance; and the measuring method of the measuring device for measuring the rotary inertia of the steering wheel has the advantages of simplicity, convenient operation, and accurate measurement, can replace the prior relative and complicated measuring devices, and effectively improves the speed of measurement, research and development of products.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a measuring device and a measuring method for measuring the moment of inertia of a steering wheel of an automobile. Background technique [0002] The moment of inertia of the steering wheel is a very important parameter in the design of the automobile steering system. It has a great influence on the steering of the vehicle, especially the return performance and the NVH performance. Therefore, in the modeling and simulation of the steering system, the steering wheel's Moment of inertia is one of the essential parameters. In the research and development stage, R&D personnel need to measure the moment of inertia of one or more steering wheels multiple times to improve the performance of the steering wheel and the car. However, there is no special measurement device for the moment of inertia of the steering wheel in China. Some existing general-purpose A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/10
Inventor 张珣
Owner CHERY COMML VEHICLE ANHUI
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