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Spatial inflatable structure ground expansion performance test system

A space inflation and test system technology, applied in the field of aerospace structure ground experiments, can solve the problems of difficult test evaluation, large randomness, etc., and achieve the effect of avoiding damage and broad application prospects

Inactive Publication Date: 2012-03-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the expansion process of the existing space inflatable structure is relatively random and difficult to test and evaluate, and to provide a ground deployment performance test system for the space inflatable structure

Method used

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  • Spatial inflatable structure ground expansion performance test system
  • Spatial inflatable structure ground expansion performance test system

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Experimental program
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specific Embodiment approach 1

[0014] Specific implementation mode one: see figure 1 , the space inflatable structure ground deployment performance test system of the present embodiment, the space inflatable structure ground deployment performance test system is composed of an impact force test module and an inflation control module, and the impact force test module is composed of three-axis piezoelectric acceleration Sensor 1, charge amplifier 2, A / D converter 3 and computer 4, the inflation control module is composed of high-pressure gas source 5, pressure switch 6, manual valve 7, decompression filter 8, proportional regulating valve 9, flow Transmitter 10, pressure relief solenoid valve 11, safety valve 12, low pressure transmitter 13, PLC controller 14, touch screen 15, power supply 16 and multi-stage overvoltage protection unit 17;

[0015] The three-axis piezoelectric acceleration sensor 1 is installed on the fixed support 18 of the space inflatable structure, and the impact force of the space inflat...

specific Embodiment approach 2

[0020] Specific implementation mode two: see figure 1 , as the space inflatable structure ground deployment performance testing system described in the first specific embodiment, the number of the multi-stage pressure transmitters is two, which are the first-stage pressure transmitter 20 and the second-stage pressure transmitter respectively. device 21; the number of solenoid valves is two, namely the first solenoid valve 22 and the second solenoid valve 23, the first stage pressure transmitter 20 and the first solenoid valve 22, the second stage pressure transmitter 21 and the second stage pressure transmitter The two solenoid valves 23 are connected in series in sequence. The pressure measuring range of the first stage pressure transmitter 20 is higher than the pressure measuring range of the second stage pressure transmitter 21 , such setting is convenient to protect the low pressure transmitter 13 and realize the measurement of the low pressure of the air cavity 19 of the ...

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Abstract

A spatial inflatable structure ground expansion performance test system is disclosed. The test system relates to an inflatable structure ground expansion performance test system. A current inflatable space structure expansion process has a strong randomness so that the process is not easy to be tested and evaluated. By using the system of the invention, the above problem can be solved. The test system of the invention comprises: an impact force test module and an air inflation control module. The impact force test module comprises: a triaxial piezoelectric-type acceleration sensor, a charge amplifier, A / D converter and a computer. The acceleration sensor is installed on a fixed support of an inflatable structure. During an expansion process, the impact force of the inflatable structure tothe fixed support is acquired by the acceleration sensor. A signal is amplified by the charge amplifier and is converted by the A / D. the computer is used to collect data. The air inflation control module controls gas pressure and flow of the inflation process. Through performing spectrum analysis to the acceleration data during the different inflation processes, stability during the expansion process and influence on a satellite can be evaluated. The system of the invention has a wide application prospect in an aerospace industry.

Description

technical field [0001] The invention relates to a ground deployment performance test system of an inflatable structure, which belongs to the technical field of aerospace structure ground experiments. Background technique [0002] The space inflatable deployment structure is a lightweight aerospace structure. The inflatable deployment process is relatively random, and physical quantities such as displacement, velocity, and acceleration of each point in the structure are not easy to measure, and the stability of the deployment process is not easy to evaluate. At present, there is no effective test system for evaluating the deployment characteristics of inflatable structures. By measuring the acceleration of the inflatable structure to the fixed support during the expansion process, and analyzing the acceleration data, the evaluation of the inflatable expansion process can be realized. Large-scale inflatable deployment structures often have very low internal pressure in the ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08G05D7/06
Inventor 谢志民陈思驰卫剑征谭惠丰
Owner HARBIN INST OF TECH