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Teaching test table for indoor automobile vibration and noise test

A technology for noise testing and teaching testing, applied in wheel testing, vehicle testing, machine/structural component testing, etc. It can solve the problems of inability to provide teaching platforms for students and related practitioners, long cycle times for testers, and many resources used. , to achieve the effect of good demonstration and tutoring, low cost of demonstration and teaching, and convenient operation

Pending Publication Date: 2018-11-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since vehicle vibration and noise tests need to be carried out on real vehicles, the training of relevant testers requires a long cycle, high cost, and a lot of resources
At present, schools and other institutions cannot provide corresponding teaching platforms and teaching equipment for the majority of students and related practitioners

Method used

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  • Teaching test table for indoor automobile vibration and noise test
  • Teaching test table for indoor automobile vibration and noise test
  • Teaching test table for indoor automobile vibration and noise test

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Embodiment Construction

[0030] In order to enable researchers in the field to further understand the present invention and related technical contents, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 with figure 2 As shown, an indoor vehicle vibration and noise test teaching test bench includes: a base, two hub mechanisms, a control module, an acceleration sensor 8, a sound pressure sensor device and a rotational speed sensor device.

[0032] The base includes a mounting base plate 2, a number of shock-absorbing braces 1 evenly arranged on the bottom of the mounting base plate 2, and several vibration-damping feet 1 are arranged on the mounting base plate 2 for installing the hub mechanism, the sound pressure sensor device and the rotational speed. Long grooves for the sensor unit;

[0033] Two rotating hub mechanisms are arranged in parallel on the base to support the front and rear wheels of th...

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Abstract

The invention discloses a teaching test table for indoor automobile vibration and noise test. The teaching []test table comprises a base, two wheel hub mechanisms, a control module, an acceleration sensor, a sound pressure sensor device and a rotating speed sensor device, wherein the two wheel hub mechanisms are parallelly arranged on the base; the control module is connected with the two rotatinghub mechanisms through a circuit and is used for regulating the rotating speed and the rotating direction of the two rotating wheel hub mechanisms; the acceleration sensor is arranged on the top of an automobile model and is used for measuring the change dimension of the automobile body vibration acceleration along with the wheel rotating speed; the sound pressure sensor device and the rotating speed sensor device are arranged on the base and are respectively used for collecting sound pressure value around the automobile body and the rotating speed of wheels in the detection process in real time. The teaching test table can be used for testing the noise and the acceleration generated by the model corresponding to the rotating speed change of the wheels, so that the important index for evaluating the automobile model NVH performance is obtained; the occupied space is small; the weight is light; the teaching test table is applicable to indoor arrangement; good demonstration and auxiliary teaching effects can be achieved by students and relevant work personnel in the field to know and study automobile vibration and noise test and analysis principle.

Description

technical field [0001] The invention relates to a test bench for automobile vibration and noise testing, in particular to a teaching test bench for indoor automobile vibration and noise testing, which can test the real-time changes of vehicle model wheel speed, vehicle body vibration acceleration and noise. Background technique [0002] Automobile NVH (noise, vibration, harshness) performance has always been an important indicator for evaluating automobile comfort performance. The evaluation of automobile comfort performance is generally divided into subjective evaluation and objective test. Among them, the objective test refers to the real vehicle test of the noise and vibration acceleration of the whole vehicle, so as to carry out objective analysis and evaluation. How to accurately measure the NVH performance of a real vehicle under idling conditions, uniform acceleration / deceleration conditions, rapid acceleration / deceleration conditions, and constant speed driving condi...

Claims

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Application Information

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IPC IPC(8): G01M17/007G01M17/013G01H17/00G09B23/00
CPCG09B23/00G01H17/00G01M17/007G01M17/013
Inventor 李广龙上官文斌陈超
Owner SOUTH CHINA UNIV OF TECH
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