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Multi-parameter compound environmental tester

An environmental test device and multi-parameter technology, applied in measuring devices, simulators of space navigation conditions, transportation and packaging, etc., can solve problems such as low precision, poor test effect, and inability to fully simulate the working environment of devices

Inactive Publication Date: 2010-12-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing testing machine that can only simulate a single environmental parameter and cannot fully simulate the working environment of the device, the test effect is poor and the accuracy is low, the present invention provides a working environment that can fully simulate the device, the test effect is good, and the accuracy is high. High multi-parameter composite environmental test device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] refer to figure 1 , 2 , 3, 16, 18, 19, 20, 21, 22

[0113] A multi-parameter composite environmental test device, including a centrifuge 1 for simulating environmental linear acceleration and an environmental chamber 2 installed on the arm 11 of the centrifuge 1 to simulate vibration acceleration, environmental noise, ambient temperature and air pressure in the environment;

[0114] Described environmental cabin 2 comprises airtight box body, and described box body is connected with a box cover 22 sealingly, and described box body and box cover 22 all comprise to be made by metal, to guarantee the outer layer of box body rigidity and An insulation layer made of non-metal to maintain the internal temperature of the composite cavity, the inner cavity of the box body forms an environmental composite cavity independent of the outside world;

[0115] The interior of the compound chamber is provided with from top to bottom in turn: the noise generating mechanism 23 fixed on...

Embodiment 2

[0136] refer to Figure 19

[0137] The difference between this embodiment and Embodiment 1 is that the deviation correction mechanism 4 includes: a partition 41 affixed to the deviation correction push rod, and airtight hyperbaric chambers located on both sides of the partition 41 42, and the low pressure chamber 43 that communicates with the atmosphere, the displacement sensor 44 that is positioned at the hyperbaric chamber 42 and facing the partition 41 to monitor the displacement of the deviation correction push rod 243, and supports the hyperbaric chamber 42 and The support of the low pressure cabin 43; the support is fixed on the web 111 of the machine arm 11, and the output signal of the displacement sensor 44 is input into a controller;

[0138] The hyperbaric chamber 42 is provided with an air inlet connected to the high-pressure air pump through an inflation solenoid valve, and an air outlet connected to the atmosphere through a deflation solenoid valve, and the inf...

Embodiment 3

[0148] refer to Figure 11-1~15

[0149] The difference between the present embodiment and the second embodiment is that the centrifuge 1 includes a base 12, a drive motor 13 fixed on the base 12, a machine arm 11 carrying a composite parameter test device, and the The power of the drive motor 13 is transmitted to the transmission mechanism of the machine arm 11, the static balance mass 14 fixed on the machine arm and the dynamic balance installed on the machine arm 11 to realize adaptive dynamic balance executive body;

[0150] The arm 11 is disc-shaped, the arm 11 is evenly provided with a web 111, and the environmental chamber 2 is installed on the web 111;

[0151] Described transmission mechanism comprises the belt transmission mechanism 16 that is connected with the output shaft of described drive motor and the gear mechanism 17 that is connected with described machine arm 11; The pinion gear 171 and the bull gear 172 affixed to the machine arm 11;

[0152] The upper...

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Abstract

The invention relates to a multi-parameter compound environment tester comprising a centrifuge for simulating a linear acceleration environment and an environment chamber arranged on the arm of the centrifuge, wherein the environment chamber is used for simulating a vibration acceleration environment, a noise environment, a temperature environment and an air pressure environment; a noise generation mechanism, a temperature control mechanism, a vibration generation mechanism, an air inlet and an air outlet are arranged in the environment chamber; the vibration generation mechanism comprises a test bench, a bench push rod and a corrective push rod fixed on the test bench, a supporting reed and a sensor; the chamber wall of a compound chamber is hermetically connected with the push rods; the bench push rod is connected with a vibration-bench moving coil; and the corrective push rod is connected with a corrective mechanism capable of preventing the vibration generation mechanism and the vibration-bench moving coil from excessively translating. The invention has the advantages of comprehensive simulation of work environment for devices, good test effect and high precision.

Description

technical field [0001] The invention relates to a multi-parameter composite environmental test device. technical background [0002] With the vigorous development of the aerospace industry, more and more aerospace equipment is put into operation, and higher reliability requirements are put forward for the components on the equipment. The working environment of these components is very complicated. For example, when an aircraft takes off, it will be affected by environmental factors such as linear acceleration, vibration acceleration, noise, temperature, and air pressure. In order to ensure that aerospace vehicles can fly safely and reliably in such a complex environment, it is necessary to conduct reliability tests on the components in them. Testing under real flight conditions is not only costly and long-term, but also has potential safety hazards. The results are difficult to analyze. Therefore, it is necessary to simulate the multi-parameter compound environment of the ...

Claims

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Application Information

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IPC IPC(8): B64G7/00G01H9/00G01P15/00
Inventor 何闻沈润杰荣左超王春宇方兵徐冠华贾叔仕陆书圣马明
Owner ZHEJIANG UNIV
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