Wheel force transfer function testing method and device in free state

A transfer function and testing device technology, applied in the field of wheel force transfer function testing in a free state, can solve the problem that a force trigger device cannot directly excite the position of the wheel near the wheel center, and cannot directly obtain the vibration value of the wheel near the wheel center, etc. Achieve the effect of reducing test difficulty, reducing impact, and ensuring consistency

Active Publication Date: 2016-04-20
CHINA AUTOMOTIVE TECH & RES CENT
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] There are two problems in the existing process of testing the force transfer function of the wheel: one is that the vibration value at the position near the center of the wheel cannot be directly obtained, and the other is that the force trigger device cannot directly excite the vibration at the position near the center of the wheel.

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  • Wheel force transfer function testing method and device in free state
  • Wheel force transfer function testing method and device in free state
  • Wheel force transfer function testing method and device in free state

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Embodiment Construction

[0038] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a wheel force transfer function testing method and device in a free state. The testing method comprises the following steps that the position of a wheel is determined; the wheel force transfer function testing device is installed on a wheel hub of the wheel; a wheel center accelerometer and a tire top accelerometer are arranged; a testing system is connected; transfer functions of wheel center accelerometer signals to force triggering device excitation signals and transfer functions of tire top accelerometer signals to the force triggering device excitation signals are calculated; a wheel force transfer function is obtained through calculation. The force transfer function testing device which is connected with the wheel is designed and mainly solves two key problems in a wheel vibration isolation test, on one hand, exciting force response in three directions at the wheel center of the wheel can be obtained in one time, and on the other hand, the purpose that the tire leather vibration response is obtained by exciting the wheel center of the wheel is achieved as far as possible, and the actual stress mode of the wheel is simulated more truly. Therefore, the whole test is more convenient and closer to the actual condition.

Description

technical field [0001] The invention belongs to the technical field of automobile NVH tests, and in particular relates to a test method and device for a wheel force transfer function in a free state. Background technique [0002] With the increase of my country's automobile production and car ownership, my country's automobile regulations have put forward stricter requirements for automobile safety performance. At the same time, customers are paying more and more attention to the quality of automobiles. NVH (N-noise, V-vibration, H-Harshness ) Noise and vibration comfort has gradually become the most important indicator to determine the quality of the car. In order to accurately define and describe the vehicle NVH performance, the vehicle NVH test technology came into being. [0003] The main function of the wheel system is to transmit the force acting between the road surface and the suspension, and to alleviate the impact vibration caused by the unevenness of the road surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/013
CPCG01M17/013
Inventor 刘海王海洋李洪亮顾灿松石岩高继东
Owner CHINA AUTOMOTIVE TECH & RES CENT
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