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Vibration characteristic testing and analyzing device of micro-interference moment simulation system

A technology of micro-disturbance torque and simulation system, which is applied in the field of measurement, can solve problems such as unsuitable measurement of moving parts, and achieve the effects of easy engineering implementation, high natural frequency and simple principle

Active Publication Date: 2015-12-09
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] After searching the literature, it was found that the Chinese invention patent application number: CN201310436859, the patent name is a flexible beam end vibration characteristic testing device and testing method, which consists of an operating platform, a workbench, a linear slide table, an adjustable bracket, a flexible beam, and an end mass body , adjustable damping device and its control system, etc., can effectively test the vibration characteristics of the mass body at the end of the beam. However, this device is not suitable for the measurement of moving parts on the air bearing table

Method used

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  • Vibration characteristic testing and analyzing device of micro-interference moment simulation system

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Embodiment 1

[0015] A device and method for testing and analyzing vibration characteristics of a micro-disturbance torque simulation system, including an instrument platform transfer mounting plate 1, a six-component force measurement system 2, movable parts and their transfer installation system 3, a three-way vibration measurement system 4, and data acquisition With the control system 5 and the data processing upper computer system 6; the instrument platform transfer mounting plate 1 is installed on the instrument platform, the six-component force measurement system 2 is installed on the instrument platform transfer mounting plate 1, and the moving parts and their transfer installation system 3 is installed on the six-component force measurement system 2, the three-way vibration measurement system 4 is installed on the movable parts and its transfer installation system 3, the data acquisition and control system 5 is installed on the instrument platform, and the data processing host compute...

Embodiment 2

[0022] The three-way vibration measurement system has the function of simultaneously measuring the x, y, z directions and the vibration amplitude in a certain direction of different measured points of the movable part. The selected sensor supports IEPE, which directly outputs a measurable voltage signal, which is directly sent to the PXI system for data acquisition. The PXI system can select different gains on the software according to the magnitude of the voltage signal to obtain better measurement results. Multiple vibration sensors can be pasted on different parts of the moving parts as needed to test the vibration transfer characteristics of the moving parts, analyze the weak links, and provide detailed data reference for the vibration reduction optimization design of the moving parts.

Embodiment 3

[0024] Regarding equipment selection, more mature products on the market can be used. For example, the six-component force measurement system can use the 9255C three-component force sensor from Kistler, Switzerland. The force sensor uses a piezoelectric crystal as a sensitive device. Under dynamic and static working conditions, the sensor can be used to measure and control the torque gyro Forces and moments in three mutually perpendicular directions during work, including six components.

[0025] The vibration sensor in the three-way vibration measurement system can choose three-way / one-way vibration sensors from KISTLER of Switzerland and PCB Company of the United States. For example, Kistler 8688A50T, Kistler 8688A5T, PCB company's 356-B18 and other sensors.

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Abstract

The invention provides a vibration characteristic testing and analyzing device of a micro-interference moment simulation system. The vibration characteristic testing and analyzing device of the micro-interference moment simulation system comprises an instrument platform switching installation plate, a six-component measuring system, a movable part and a switching installation system thereof, a three-dimensional vibration measuring system, a data collection and control system, and a data processing upper computer system. The data collection and control system is installed on an air floatation instrument platform. The movable part and the switching installation system thereof fix a device or a single machine to be tested on the six-component measuring system. The six-component measuring system collects the force / moment output of the tested member to the platform, and the three-dimensional vibration measuring system measure the vibration and the transmission relation of the vibration of the movable part. The data collection and control system monitors the operation of the movable part and collects data, carries out real-time or off-line analysis and display on collected signals, stores the data as files and uploads the files to the data processing upper computer system in a wireless communication manner. The vibration characteristic testing and analyzing device of the micro-interference moment simulation system is simple in principle, high in inherent frequency and convenient to realize on engineering.

Description

technical field [0001] The invention relates to measurement technology, in particular to a device for testing and analyzing vibration characteristics of a micro-disturbance moment simulation system. Background technique [0002] Ground simulation technology is of great significance in the development of space vehicles. As the core equipment of full physical simulation, the air bearing table is a key task in the use process is to test the influence of satellite moving parts on the star, so as to design corresponding compensation or Control measures to provide solutions for realizing high precision and high reliability of satellites. [0003] After searching the literature, it was found that the Chinese invention patent application number: CN201310436859, the patent name is a flexible beam end vibration characteristic testing device and testing method, which consists of an operating platform, a workbench, a linear slide table, an adjustable bracket, a flexible beam, and an end...

Claims

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Application Information

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IPC IPC(8): G01M7/06
Inventor 马广程夏红伟王常虹马长波任顺清
Owner HARBIN INST OF TECH
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