Method for determining flutter response of high-resolution minisatellites

Abstract

The invention provides a method for determining flutter response of high-resolution minisatellites. Through a determination method of adopting a single frame to control disturbing torque produced by the dynamic imbalance of moment gyroscope rotors, the invention solves the problem of determining the flutter interference of the high-resolution minisatellites of the type. The method realizes the decoupling and degree reduction of a satellite-flutter vibration mechanical equation among degrees of freedom through appropriate state variable settings and replacement, transforms the vibration mechanical equation into a first order differential equation, and utilizes a numerical solution to determine attitude response produced by satellites under the action of flutter interference sources, so themethod is concise and normative. For the attitude response of the satellites caused by the action of flutter interference, the method combines satellite attitude control laws to eliminate controllable parts in flutter attitude response, and finally determines the flutter response of the satellites under the action of the flutter interference sources. The determination method can also adjust and control the disturbing torque of moment gyroscopes by regulating the installation modes and machining accuracy of the gyroscopes so as to achieve the aim of improving image quality.

Description

technical field [0001] The invention relates to a method for determining the flutter response of a high-resolution small satellite, in particular to a method for determining the flutter response of a high-resolution small satellite using a control moment gyro actuator, which belongs to the technical field of satellite dynamics and can be used for satellite attitude interference , Flutter analysis. Background technique [0002] During satellite imaging, the movement of moving parts and the flexibility of the satellite structure will cause disturbances to the main body of the satellite and the CCD camera. Among them, the part with small amplitude and high frequency that cannot be measured and controlled by the control system is flutter. Compared with large satellites, high-resolution small satellites have lighter inertial mass and are more susceptible to interference. [0003] In 2003, Yu Dengyun, Wang Yueyu, etc. discussed the flutter dynamics analysis technology in the pape...

AI Technical Summary

Problems solved by technology

[0006] The agile mobility of high-resolution small satellites has been paid more and more attention to and developed. Such high-resolution small satellites mainly use control moment gyroscopes as actuators. At present, control moment gyroscopes, which are the main sources of interference for such high-resolution small satellites, have not been seen. Interference modeling and flutter analysis of

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