A satellite integrated state closed-loop test system and corresponding test method

Abstract

The present invention relates to a satellite closed-loop test system, comprising: a dynamic simulator; an attitude and orbital dynamics model; and an actuator model configured to model the actuator, wherein the actuator model includes: a thruster model , which is configured to model the thruster, wherein the modeling is an exponential model and simulates the rising and falling edges of thrust according to satellite control commands to generate thrust data; and the reaction wheel model is configured to model the reaction wheel Modeling is performed, wherein the reaction wheel model calculates the output torque of the reaction wheel according to the speed of the reaction wheel. The invention also relates to a method for performing a closed-loop test on a satellite. Through the solution of the invention, the actuator can be accurately simulated, thereby ensuring the closed-loop performance of the test. In addition, the solution of the present invention is simple and low-cost, and does not require major modification to the existing test system, so it is also suitable for use in the existing test system.

Description

technical field [0001] The present invention generally relates to the technical field of simulation and testing of aerospace control systems, and specifically relates to a closed-loop testing system for satellite integration status. Furthermore, the invention relates to a method for performing closed-loop tests on a satellite. Background technique [0002] In order to ensure safety and reliability, satellites need to undergo a number of large-scale tests after integration, including thermal vacuum, mechanics, EMC and aging tests. During the test, the test equipment on the ground was used as much as possible to simulate the real environment of the satellite flight. Before and after the test or during the test, the function and performance of the satellite are checked by way of power-on test. When conducting power-on tests, especially long-term power-on tests such as heat and aging, it is expected to test all the functions and performances corresponding to each stage of the ...

AI Technical Summary

Problems solved by technology

[0003] For the control system, the on-orbit operation is a closed-loop control method, while the test after ground satellite integration is usually an open-loop method, because the existing test system will inevitably introduce external excitation

Although the on-orbit working conditions can be simulated as much as possible by setting the working state of the stand-alone machine, the open-loop mode of the stand-alone machine cannot completely simulate the closed-loop state, and the system software cannot be fully verified, which will lead to some design defects that cannot be found in time during the ground test. This poses a certain risk to subsequent in-orbit operations

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