Hovering cooperative control method and system for electromagnetic spacecraft fleet

Abstract

The invention provides a hovering cooperative control method and system for an electromagnetic spacecraft fleet. The method includes calculating the electromagnetic force of each electromagnetic spacecraft and obtaining an electromagnetic force calculation equation; taking a round track in the same cycle of an oval track of a reference spacecraft as a nominal track, establishing a target dynamicsequation of relative motion of the electromagnetic spacecraft and the reference spacecraft, and designing a robustness control rule by adopting a slide mode control method based on the target dynamicsequation; distributing magnetic torques of all the electromagnetic spacecrafts according to the electromagnetic force calculation equation and the robustness control rule. According to the invention,in a condition that the electromagnetic spacecraft cannot acquire reference track real time information and is subjected to different interference, hovering of the spacecraft fleet in any position inthe space can be realized; good robustness is achieved. By adopting the optimization method for realizing optimization configuration of magnetic torques of the electromagnetic spacecrafts, decouplingof electromagnetic spacecraft tracks and attitudes can be facilitated.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, to a method and system for coordinated control of electromagnetic spacecraft formation hovering. Background technique [0002] Formation hovering means that multiple accompanying spacecraft in the gravitational field remain relatively stationary relative to the reference spacecraft or other natural celestial bodies under the action of control force. Formation hovering technology has a wide range of applications in the fields of spacecraft on-orbit service, deep space exploration, and spacecraft tracking and monitoring. When hovering at close range, traditional thrusters based on the principle of impulse will cause plume pollution and have a limited lifespan. Some missions even strictly limit the ignition in the direction connecting the target and the hovering spacecraft. In addition, the non-Keplerian nature of the hovering orbits of the member spacecraft in ...

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Problems solved by technology

[0006] In order to overcome the control laws designed in the prior art, the control laws all need real-time accurate information of the reference orbit, which makes it difficult to realize, and the prior art does not consider the communication between the formation member spacecraft, and cannot effectively utilize the relative position of the member spacecraft. State information leads to poor formation coordination ability and redundant control problems, providing a method and system for electromagnetic spacecraft formation hovering coordination control

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