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A Mechanism Thermal Stability Analysis Method for Large Space Load Antennas

An analysis method and stability technology, applied in genetic models, computer-aided design, design optimization/simulation, etc., can solve problems such as excessive thermal deformation and vibration non-convergence, and achieve reduced interference, reduced thermal deformation, and computational accuracy. high effect

Active Publication Date: 2022-02-15
哈尔滨工大天域科技有限公司
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Problems solved by technology

[0003] Aiming at the problems of excessive thermal deformation or non-convergence of thermally induced vibration caused by the frequent entry and exit of large-scale space-loaded antennas, the present invention provides a thermal stability analysis method for large-scale space-loaded antennas

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  • A Mechanism Thermal Stability Analysis Method for Large Space Load Antennas
  • A Mechanism Thermal Stability Analysis Method for Large Space Load Antennas
  • A Mechanism Thermal Stability Analysis Method for Large Space Load Antennas

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0036] A thermal stability analysis method for large-scale space-loaded antennas in this embodiment, such as fi...

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Abstract

A thermal stability analysis method for large-scale space-loaded antennas solves the problems of excessive thermal deformation or non-convergence of thermal-induced vibration caused by frequent entry and exit of large-scale space-loaded antennas, and belongs to the field of spacecraft thermal design. The present invention includes: step 1, obtaining the temperature field of the space load antenna; step 2, obtaining the thermal response characteristic time and the structural response characteristic time according to the temperature field, and determining whether the space load antenna has thermally induced vibration, if so, go to step 3, otherwise , turn to step 4; step 3, set a smart rod with a piezoelectric sheet between the space payload antenna and the satellite body as a sensor and actuator, and use a PID controller to control the smart rod according to the thermally induced vibration response; step 4 1. Select the most important influencing factors of the space load antenna temperature, take the temperature difference between the space load antenna entering and leaving the earth shadow as the optimization target, calculate the optimal solution of the most important influencing factors, and then combine the thermal deformation response to optimize the space load antenna.

Description

technical field [0001] The invention relates to a thermal stability analysis method for a large-scale space load antenna, which belongs to the field of spacecraft thermal design. Background technique [0002] With the development of aerospace science and technology, space payload antennas are developing in the direction of large size, great flexibility and high precision. Due to the frequent entry and exit of the earth shadow during the operation of the large-scale space payload antenna, large thermal deformation or non-convergence of thermally induced vibration will occur, which will seriously affect the effectiveness of the payload, and even cause serious changes in the attitude of the satellite. In order to realize the functions of high imaging resolution and high pointing accuracy of large-scale space-loaded antennas, it is necessary to clarify the generation mechanism of such thermal deformation / thermal-induced vibration, evaluate, optimize and suppress its amplitude an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/27G06N3/12G06F119/08G06F111/06
Inventor 马文来华运韬付小懿李晓云王光远吴永胜
Owner 哈尔滨工大天域科技有限公司
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