A ground physical simulation test system for a super-large-scale flexible spacecraft

Abstract

The invention discloses a super-large-scale flexible spacecraft ground physical simulation test system. The system comprises a gantry hanging bracket, a simulation wall, a flexible load local structure simulation component, a flexible structure zero gravity compensation system, a platform constraint excitation system, a virtual substructure constraint excitation system and a ground measurement system, wherein the simulation wall is arranged on one side of the gantry hanging bracket and is fixedly connected to ground; the flexible load local structure simulation component is suspended on the gantry hanging bracket through a suspension component; the flexible structure zero gravity compensation system is arranged at a combination position of each suspension component and the gantry hanging bracket; the platform constraint excitation system is located between the simulation wall and one end of the flexible load local structure simulation component; the virtual substructure constraint excitation system is located on the other end of the flexible load local structure simulation component; and the ground measurement system is arranged on the flexible load local structure simulation component and is used for measuring state information of the flexible load local structure simulation component. In the invention, correctness and effectiveness of a dynamic modeling method and a control scheme can be effectively verified and a test base is established for high-precision orientation control of a super-large-scale flexible spacecraft.

Description

technical field [0001] The invention relates to the overall technical field of spacecraft, in particular to a ground physical simulation test system for a super-large-scale flexible spacecraft. Background technique [0002] In order to meet the demand for high-resolution space remote sensing information and form a high-resolution, global-coverage Earth observation capability, it is necessary to develop spacecraft with ultra-large-scale flexible payloads. For this type of spacecraft, due to the very large size of the antenna loaded on the star, it is difficult to establish a full-scale test model on the ground, and the cost is very high, and the dynamics of the ultra-large-scale flexible spacecraft cannot be fully simulated by the equivalent method of scaling. characteristic. Therefore, a feasible scheme is proposed for the ground physics test of such ultra-large flexible spacecraft. [0003] Do not find description or report similar to the present invention at present, als...

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Problems solved by technology

[0004] In order to solve the problem that the existing full-scale ground test system is difficult to construct and the reduced-scale ground test system cannot fully simulate the dynamic characteristics of the spacecraft, the purpose of this invention is to provide a ground physical simulation test system for super-large-scale flexible spacecraft. The flexible load local structure simulation system, platform constraint excitation system, and virtual substructure constraint excitation system can simulate the dynamic characteristics of ultra-large-scale flexible spacecraft, and effectively verify the correctness and effectiveness of dynamic modeling methods and control schemes. High-precision orientation control of scale-flexible spacecraft lays the foundation for experiments

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