A system and method for formulating impact test conditions of satellite components based on wavelet transform

A technology of wavelet transform and impact test, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of under-test, over-test, and inaccurate test conditions, etc., and achieve good indication effect

Active Publication Date: 2022-04-08
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

[0004] The technical problem solved by the present invention is: in view of the present prior art, the current application of shock response spectrum to characterize the shock test conditions of satellite components is likely to cause over-testing or under-testing, and proposes a satellite component shock test condition formulation based on wavelet transform The system and method solve the problem of inaccurate magnitude of test conditions caused by the difficulty in accurately determining the power amplification factor when formulating impact test conditions for satellite components

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  • A system and method for formulating impact test conditions of satellite components based on wavelet transform
  • A system and method for formulating impact test conditions of satellite components based on wavelet transform
  • A system and method for formulating impact test conditions of satellite components based on wavelet transform

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[0041] A system for formulating impact test conditions of satellite components based on wavelet transform, such as Figure 5 As shown, through the Haar continuous wavelet transform of the time-domain impact load, the impact test conditions are formulated according to the obtained wavelet coefficients. The functions of each module in the system are as follows: including the time-domain impact load measurement module, Haar wavelet analysis module, wavelet coefficient processing module, Test condition generation module, the specific functions are as follows:

[0042] Time-domain impact load measurement module: use the shock sensor to convert the acceleration response at the installation point of the satellite component into a load electrical signal, and process the load electrical signal into a time-domain impact load acceleration signal and then transmit it to the Haar wavelet analysis module, where:

[0043] Shock sensor: convert the acceleration response at the installation po...

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Abstract

A system and method for formulating impact test conditions of satellite components based on wavelet transform. Haar continuous wavelet transform is used to formulate impact test conditions of satellite components, which can better handle transient unsteady signals and accurately reflect the magnitude of impact load actually borne by satellite components. ; In view of the fact that the current application of shock response spectrum to characterize the shock test conditions of satellite components is likely to cause over-test or under-test, it solves the problem of inaccurate test conditions caused by the difficulty in accurately determining the dynamic amplification factor when formulating satellite component shock test conditions.

Description

technical field [0001] The invention relates to a wavelet transform-based satellite component impact test condition formulation system and method, belonging to the field of spacecraft mechanics environment test. Background technique [0002] The spacecraft structure and payload may be damaged or failed in the pyroshock environment, which will affect or even terminate the space mission in advance. The impact load of pyrotechnics usually does not have a destructive effect on the main structure of the spacecraft, but it can cause damage to impact-sensitive components and equipment, such as high-sensitivity equipment and electronic products that are sensitive to high-frequency environments, and they will fail , light and thin structures, brittle materials will be damaged and so on. The pyrotechnic devices used on satellites can usually be divided into two categories: point source pyrotechnics and line source pyrotechnics. Among them, point source pyrotechnics directly assembled...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00
CPCG01N3/00G01N2203/005
Inventor 刘刚陈曦张程王跃宇李友遐
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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