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Small-size portable high-accuracy disturbance measuring system

A measurement system and portable technology, applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems such as the literature report of the micro-vibration measurement system that has not been seen, and achieve the improvement of measurement accuracy, reliability and adaptability Effect

Inactive Publication Date: 2010-11-10
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no literature report on this kind of micro-vibration measurement system at home and abroad.

Method used

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  • Small-size portable high-accuracy disturbance measuring system
  • Small-size portable high-accuracy disturbance measuring system
  • Small-size portable high-accuracy disturbance measuring system

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Embodiment Construction

[0015] Such as figure 1 As shown, the present invention consists of an upper mounting part 1, a lower mounting part 2, a connecting bolt 3, four vertical piezoelectric sensors 4, four lateral piezoelectric sensors 5, four lateral positioning baffles 6, and four lateral pressure sensors. Tightening bolt 7, four vertical positioning baffles 8, four vertical compression bolts 9, data acquisition and processing system 10; The four vertical piezoelectric sensors 4 are symmetrically located on the upper surface of the lower mounting part 2 along the vertical direction, and the four vertical bolts 9 drive the vertical positioning baffle 8 to compress the four vertical piezoelectric sensors 4 for measuring Z The vibration force in the direction and the vibration moment in the X and Y directions; four transverse piezoelectric sensors 5 are installed on the inner horizontal direction of the upper mounting part 1 along the four sides of the mounting part, and are installed symmetrically ...

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Abstract

The invention provides a small-size portable high-accuracy disturbance measuring system. The system consists of an upper installation part, a lower installation part, eight piezoelectric force sensors (four sensors are arranged along a vertical direction and the other four sensors are arranged along a horizontal direction) and a data acquiring and processing system, wherein the upper and lower installation parts are connected through a screw to form a whole; and a vertical pressure sensor and a transverse pressure sensor are arranged in an integral part consisting of the upper and lower installation parts and drive washers to compress the sensors through bolts respectively. The eight sensors are arranged reasonably so that three dynamic forces and three dynamic bending moments of a disturbance source can be measured. The disturbance source is arranged outside the system according to a specific requirement. The piezoelectric sensors are connected with the data acquiring and processing system through leads. The measuring system can accurately measure the disturbing force of a tiny disturbance source and has high measuring reliability. The system has a small size per se, light weight and capability of testing the disturbing force under various environments so that the range of application is expanded to a large extent.

Description

technical field [0001] The invention relates to a small portable high-precision disturbance measurement system, which can perform disturbance force tests in various environments and has a wide range of applications; due to high measurement accuracy, it can be used to measure the vibration of small disturbance loads inside a spacecraft on six degrees of freedom The signal is measured dynamically. Background technique [0002] Most of the current spacecraft are large-scale flexible deployment mechanisms with a large number of optical elements, which have high requirements for pointing accuracy and stability. In addition, in the attitude control system of modern spacecraft, reaction wheels, single-frame moment gyroscopes and solar wing drive mechanisms are important components in the control system. While they provide the necessary control power, they will also cause some harmful vibrations ( For simplicity, the above three systems are collectively referred to as disturbance s...

Claims

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Application Information

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IPC IPC(8): G01H11/08
Inventor 程伟王和
Owner BEIHANG UNIV
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