A Control Method for the Unbiased Spin-Up and De-Spin of Satellite Momentum Wheels in Orbit Attitude

Abstract

The present invention provides a control method for the on-orbit attitude of the satellite momentum wheel to spin and despin without deviation, comprising the following steps: setting the final target angular momentum of the satellite by remote control; managing the momentum of the reaction flywheel, and controlling the satellite at the desired center Work within the speed range; calculate the magnetic feed-forward torque, synthesize the output torque magnetic feed-forward torque calculated by the satellite controller, conventional decoupling torque and disturbance compensation torque to obtain the three-axis command torque and integrate it in the control cycle to obtain the command angular momentum of the three-axis satellite. The command speed of the satellite in use is calculated according to the installation matrix of the satellite. The magnetic control torque acts on the star, and at the same time, the influence of the magnetic torque on the star is counteracted in the command speed of the flywheel through the synthesizing of the feedforward torque, so as to achieve the unbiased rotation and elimination of the attitude during the increase and decrease of the bias angular momentum. spin effect.

Description

Technical field [0001] The present invention belongs to the field of satellite attitude control, and in particular, the satellite momentum wheel has no deviation of the orbit gesture without deviation. Background technique [0002] With the development of civil aerospace technology and application demand, the country is increasingly high and high in demographic and high-class observation satellites, which is also gradually developed over eight years. [0003] In order to ensure that the satellite in the track application task, the satellite attitude control system is an important part of the satellite. With the development of modern satellite technology, it has put forward higher requirements for its attitude control system, requirement The posture control system is simple and reliable. Easy to implement. High precision, better maneuverability and flexibility have become an important criterion for evaluating the advantages and disadvantage of satellite posture control system. [...

AI Technical Summary

Problems solved by technology

There are also methods that use geomagnetic torque to achieve flywheel spin-up, but during the spin-up process, there will still be obvious interference with the satellite attitude, and the load generally cannot work normally during this period.

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