Satellite integration state closed-loop test system and corresponding test method

Abstract

The invention relates to a satellite closed-loop test system, which comprises a dynamic simulator, an attitude and orbit dynamics model and an actuator model, wherein actuator model is configured to perform modeling on an actuator, the actuator model includes a thruster model and a reaction wheel model; the thruster model is configured to perform modeling on a thruster, the built model is an exponential model, and the rising edge and the falling edge of the thrust are simulated according to a satellite control instruction so as to generate thrust data; and the reaction wheel model is configured to perform modeling on a reaction wheel, and the reaction wheel model calculates the output torque of the reaction wheel according to the rotating speed of the reaction wheel. The invention furtherrelates to a method for carrying out a closed-loop test on the satellite. According to the scheme of the invention, the actuator can be accurately simulated, so that the closed-loop performance of thetest is ensured. In addition, the scheme of the invention is simple and low in cost, and does not need to perform great transformation on the existing test system, thereby being also applicable to 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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