Satellite simulation on-orbit working condition closed-loop test system

Abstract

The invention relates to a satellite closed-loop test system which is used for transforming an existing test system. The system is suitable for all large-scale tests or tests after satellite integration so as to carry out comprehensive assessment of system functions and performance in a full task stage and a real working state. A small dynamic simulator is adopted as an excitation source of the sensor and is directly arranged on the surface of the satellite sensor in a satellite integration state, so that the transformation cost of an existing test system is reduced; satellite telemetry parameters are used as input to carry out accurate modeling on the actuator, so that the actuator enters a test closed loop; the satellite telemetry parameters comprise an actuator control instruction and a reaction wheel rotating speed; and the reaction wheel replaces instruction modeling in a rotating speed modeling mode, so that the single machine is subjected to closed-loop testing in a real working state.

Description

technical field [0001] The present invention generally relates to the technical field of simulation and testing of aerospace control systems, in particular to a closed-loop testing system for satellite simulation on-orbit working conditions. 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 satellite's life cycle with the real on-orbit operation status of the satellite, so that...

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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