A general method for high-precision adaptive transfer of thermally coupled loads on spacecraft and space machines

Abstract

The invention provides a universal method for high-accuracy self-adaption transmitting of space vehicle-heat coupling loads of a space vehicle. The universal method includes the steps that 1, space-vehicle-heat coupling simulating model data and coupling-load primary data are extracted, and the extracted data is subjected to multivariate consistency processing; 2, coupling-load transmitting accuracy requirements are set, and a space-vehicle structure simulating model is subjected to area decomposition and area boundary identification; 3, decomposed areas of the space-vehicle structure simulating model are subjected to graded coupling-load transmitting through the compact support radial basis function; 4, the areas with the transmitted coupling loads are extracted, checking is carried out according to the coupling-load primary feature data, and whether the set coupling-load transmitting accuracy requirements are met or not is judged. According to the universal method, inference caused by manual intervention, customized modes and the like in the simulation process is reduced, the high-accuracy self-adaption transmitting method is provided, efficiency and accuracy are coordinated and balanced, and universalized application transmitting of the coupling loads in the vehicle-heat coupling simulating analysis process of various space vehicles is achieved.

Description

technical field [0001] The invention relates to the technical field of spacecraft structural space machine thermal coupling, in particular to a general method for high-precision adaptive transfer of spacecraft space machine thermal coupling loads. Background technique [0002] In recent years, with the rapid development of high-resolution and high-precision imaging satellites, while the imaging capabilities of on-board payloads have been rapidly enhanced, the requirements for the pointing accuracy of payloads are also increasing. The requirements for precision and dimensional stability are also increasing. [0003] With the development of aerospace technology, spacecraft on-orbit high-precision and high-resolution imaging technology has also made great progress. Most of the loads on this type of spacecraft have obvious characteristics, that is, they are very sensitive to changes in the thermal environment on orbit. This is because the structural deformation and thermal stre...

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Problems solved by technology

[0005] (1) Most of the traditional multi-field coupling simulation analysis is completed in a certain analysis tool, which cannot adapt to the thermal coupling simulation of spacecraft and machine, and needs to be completed in collaboration with multi-disciplinary professional analysis tools. Effective data exchange interface, which in turn leads to complex co-simulation workflow for this type of multi-field coupling problem, involving frequent data exchange and a large amount of data processing, and low simulation efficiency;

[0006] (2) Although the calculation functions of some simulation analysis tools are used to carry out coupling load transfer to a certain extent, due to the obvious limitations of these calculation functions, the functions cannot fully adapt to the situation of complex configuration spacecraft, especially It is the gross error or singularity result caused by the small mechanical clearance or tolerance due to the complex configuration;

[0007] (3) Traditional methods usually involve a lot of manual intervention and customized models for specific goals in the specific implementation process, and do not have general data processing and calculation capabilities

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