Implementation method for disturbance simulation of satellite flywheel

Abstract

The invention discloses an implementation method for disturbance simulation of a satellite flywheel. A vibration signal generated by the satellite flywheel is perceived by an acceleration transducer, an analog signal is converted into a digital signal by a capture card, and a main frequency component and amplitude of the signals are extracted to be synthesized into input of disturbance simulation of the flywheel through a formula. The implementation method solves the problem that truth of a signal component is poor when the satellite is simulated. A data acquisition part mainly comprises a vibration acceleration transducer, a data acquisition system and acquisition software. The implementation method for disturbance simulation of the satellite flywheel is a method for processing a signal synthesized by a frequency component generated in fundamental frequency, frequency doubling thereof, natural frequency of structure and torque control process, an acquired signal is analyzed, identified and synthesized as simulation input, and accordingly a function of achieving system disturbance input is achieved.

Description

technical field [0001] The invention relates to a disturbance simulation of a satellite flywheel, in particular to a method for realizing the disturbance simulation of a satellite flywheel through analyzing and optimizing the ground test data of the flywheel and finally realizing the disturbance amount through a mathematical model. Background technique [0002] With the continuous development of satellite technology, the satellite structure is becoming more and more complex, and the load is also increasing. At the same time, the load has higher and higher requirements on the satellite platform. The problem of micro-vibration has become the main factor restricting the development of high-precision and high-stability satellites. However, the relevant research carried out at present is only on the test, which greatly limits the development progress of the satellite. [0003] The current simulation method for flywheel micro-vibration is to calculate the disturbance magnitude of ...

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Problems solved by technology

[0004] 1) Since the frequency component of the dynamic unbalance is relatively single, it cannot cover the main frequency component when the flywheel is working, so it has a great impact on the accuracy of the simulation;

[0005] 2) The frequency component caused by the control mode and the natural frequency component of the flywheel itself are not considered in the simulation analysis, so the simulation of the resonance point cannot be realistic;

[0006] 3) The pertinence of this kind of simulation method is not strong, and the difference between the zero momentum wheel and the offset momentum wheel cannot be distinguished, so there are certain defects in the simulation

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