Satellite thrust eccentric moment control device and method

Abstract

The invention discloses a satellite thrust eccentric moment control device and method. The device comprises: a base plate, a controller, a mass block, a driving unit in a first direction, a driving unit in a second direction, and an angular velocity measurement unit; a controller, a mass block, and a mass block. The first-direction driving unit and the second-direction driving unit are arranged on the bottom plate, and the mass moves in the first direction and / or the second direction driven by the first-direction driving unit and / or the second-direction driving unit. The angular velocity measurement unit is used to measure the angular velocity parameters of the satellite and send the angular velocity parameters to the controller; the controller is used to control the action of the first direction drive unit and / or the second direction drive unit according to the angular velocity parameters. The satellite thrust eccentric moment control device and method of the present invention change the position of the center of mass by driving the mass block to move, so that the thrust vector moment passes through the center of mass, eliminates the eccentric moment, and reduces the influence of the propulsion system on the attitude of the satellite. The algorithm structure is simple, and the controller has high reliability.

Description

technical field [0001] The invention relates to the technical field of spacecraft control, in particular to a satellite thrust eccentric moment control device and method. Background technique [0002] With the development of aerospace technology, the number of spacecraft launched by various countries is increasing, causing space resources to become more and more tense. With the increasing demand for spacecraft formation networking and constellation missions, the dependence of spacecraft on propulsion systems is increasing. At the same time, due to the increasing number of failed spacecraft, a large amount of space junk has been caused, which has brought huge risks to space missions. Therefore, my country stipulates that starting from 2020, all spacecraft launched into orbit must be equipped with de-orbit devices. , can actively deorbit at the end of its life. The current deorbiting measures mainly include the thrust system and deorbiting sails. Off-orbit sails are mainly u...

AI Technical Summary

Problems solved by technology

This method has a large number of thrusters, which will increase the complexity of the system, resulting in increased cost and reduced reliability

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