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Electric road simulating vibration table

A technology of road simulation and vibration table, which is applied in the field of physics and measurement, can solve the problems of large distortion of low-frequency waveforms, difficult control, and large volume, and achieve the effects of good linearity, stable operation, and small volume

Inactive Publication Date: 2010-09-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the price of the mechanical vibration table is relatively low, its low-frequency waveform distortion is large; although the electro-hydraulic vibration table has a better waveform effect, it is bulky, difficult to control, and high in cost

Method used

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  • Electric road simulating vibration table
  • Electric road simulating vibration table
  • Electric road simulating vibration table

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In the present invention, the actuator of the vibrating table is composed of a servo motor and a lead screw, the data acquisition device of the vibrating table is composed of a high-precision sensor and a data acquisition card, and the control system of the vibrating table is composed of a computer and software, so that the volume of the electric actuator can be fully utilized. The advantages of small size, fast response, and easy control make the present invention have the characteristics of compact structure, large excitation force, rapid response, good waveform, and low cost.

[0018] (1) Hardware part

[0019] The hardware composition of the circuit vibrating table is attached figure 1 As shown, it mainly consists of three parts: executive agency, data acquisition device and computer control system. The three parts are described in detail below.

[0020] (1) Executing agency

[0021] This part is mainly composed of motor driver, servo motor, lead screw and workbe...

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PUM

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Abstract

The invention discloses an electrodynamic road simulation vibration table which belongs to the technical field of road vibration test and is characterized by comprising an actuating mechanism, a data collecting device and a computer, wherein the actuating mechanism consists of a motor driver, a servo motor, a shaft joint, a work table fixing a tested component and a guide screw in sequence; the data collecting device is formed by connecting a data collecting card and a displacement pickup in series; the computer outputs road movement simulating the vertical displacement of the road and showedin a pulsed voltage way to the motor driver so that the motor drive generates a revolving movement, and the revolving movement is further converted into a linear movement to drive the tested component to simulate the vertical displacement movement of the road, and after the displacement of the tested component is collected by the data collecting device, corresponding digital signals are input in the computer. The invention has the advantages of stable running, good controllability, quick response, high sensitivity, good linearity, and the like.

Description

technical field [0001] The present invention relates to the field of physics: measurement; testing technology. The road simulation vibration table system composed of servo motor, lead screw, sensor group, data acquisition card and computer control system has compact structure, large excitation force, fast response, good waveform and easy control. Background technique [0002] Road simulation test is an indoor test technology developed in the 1960s. With the development of modern control technology and computer technology, road simulation test has become a major test project in the automobile industry. The main equipment for road simulation test includes dynamometer, four-column vibration simulation table and vibration table. The first two are mainly used for the test of the whole vehicle, and the latter is mainly used for the test of auto parts. The vibration table is the key equipment for the indoor road simulation test of the automobile and its parts. It can generate va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02G01M17/007
Inventor 王峻沈延李小兰
Owner TSINGHUA UNIV