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Method for determining random vibration power spectrum of minisatellite optical camera environment test

An optical camera and random vibration technology, applied in the field of small satellite aerospace environment test, can solve problems such as over-design and neglect of system complexity, and achieve the effect of reducing development cost, shortening development time, and avoiding camera over-experimentation.

Pending Publication Date: 2021-01-29
AEROSPACE DONGFANGHONG SATELLITE
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Problems solved by technology

[0004] The technical problem of the present invention is to overcome the deficiencies of the existing test methods, and propose a method for determining the random vibration power spectrum of the small satellite optical camera environmental test, aiming to solve the problems caused by ignoring the complexity of the system and the actual manufacturing process. Experimentation, over-design issues

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  • Method for determining random vibration power spectrum of minisatellite optical camera environment test
  • Method for determining random vibration power spectrum of minisatellite optical camera environment test

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Embodiment Construction

[0030] The solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, a method for determining the random vibration power spectrum of the small satellite optical camera environmental test of the present invention comprises the following steps:

[0032] 1. According to the product information of the small satellite and the power spectrum PSD0 of the random vibration test of the mechanical environment of the whole satellite, the dynamics simulation calculation of the whole satellite is carried out by using the modal superposition method, and the random vibration response power spectrum PSD1 of the optical camera installation surface is obtained. Small satellite whole-star product information includes the small-satellite whole-star finite element model, the position of the satellite-rocket interface, etc. The power spectrum PSD0 of the whole-star service mechanical environment random vibra...

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Abstract

The invention discloses a method for determining a random vibration power spectrum of a minisatellite optical camera environment test, and the method comprises the steps of obtaining a camera installation surface response power spectrum PSD1 through calculation according to the information of a minisatellite whole-satellite product and a mechanical environment random vibration test power spectrumPSD0 used by a whole satellite; according to the camera product information, obtaining the mass of the whole and internal components of the camera and a component tolerance power spectrum PSD2; formulating process random vibration test power spectrums PSD3 and PSD4 of the whole and internal components of the camera; and according to the random vibration test power spectrum PSD3 of the overall process of the optical camera, obtaining the response power spectrum PSD5 of the installation surface of the internal component of the optical camera. According to the invention, the environmental adaptability of the optical camera is fully verified, the process screening is assessed, the over-design and over-test of the optical camera can be effectively avoided, and a foundation is laid for the smooth development of product development.

Description

technical field [0001] The invention relates to a method for determining the random vibration power spectrum of a small satellite optical camera environmental test, belonging to the technical field of small satellite spaceflight environmental tests. Background technique [0002] Before the small satellite optical camera is delivered to the satellite as a whole, a series of environmental test assessments are required. The purpose and function of the environmental test include two aspects. Quality requirements to ensure that the product works normally in the predetermined working environment; on the other hand, it is to improve the reliability of the product, inspect the manufacturing quality of the product, and expose potential defects in components, materials and manufacturing processes on the ground as much as possible to reduce early invalidated. [0003] At present, the formulation of the random vibration test power spectrum of optical cameras for small satellites is the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F17/12G06F17/13G06F119/14
CPCG06F30/23G06F17/12G06F17/13G06F2119/14Y02T90/00
Inventor 东巳宙白照广常静
Owner AEROSPACE DONGFANGHONG SATELLITE
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