Bounded accompanying boundary control method of satellites under circular reference orbit

Abstract

The invention provides a bounded accompanying boundary control method of satellites under a circular reference orbit. The bounded accompanying boundary control method includes the steps of when a bounded accompanying model, between bounded boundaries, of the tracked satellite relative to the reference satellite needs to be achieved at the terminal moment, building a boundary quantitative analysis relation between the bounded accompanying boundary of the satellites under the circular reference orbit and satellite orbital element differences in advance, and carrying out solving to obtain the expected orbital element difference corresponding to a boundary-given accompanying task; carrying out calculation through a pre-given quantitative analysis control model to obtain pulse speed increments needing to be exerted on the tracked satellite at the initial moment and the terminal moment. The expected orbital element difference is solved through a boundary analysis model, design space of the accompanying model is expanded, and certain flexibility is brought to selecting formation or cluster flight mission models. The demands for the pulse speed increments with given boundaries are obtained through accurate calculation of the quantitative analysis control model, and the bounded accompanying boundary control method has the advantages of being high in control accuracy and simple in control process.

Description

technical field [0001] The invention belongs to the technical field of orbital dynamics and control of spacecraft, and in particular relates to a boundary control method for bounded accompanying flight of a satellite in a circular reference orbit. Background technique [0002] Space missions where multiple satellites work together in orbit, such as satellite formation gravity field measurement, on-orbit service, and non-cooperative target monitoring, need to keep the formation or cluster flying satellites within a limited distance from each other. Accompanied flight is a kind of periodic relative movement with a closed trajectory centered on the reference satellite. When the initial relative state is given, the accompanying flight configuration will have a definite inter-satellite distance boundary, which can be used as the first choice for multi-satellite cooperative space missions with boundary constraints. Traditionally, due to the lack of a theoretical model of the boun...

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Problems solved by technology

The main problem of this method is: because the traditionally known accompanying configuration types with analytical boundary expressions are few, the set satellite control objectives are relatively conservative, making it costly to maintain the relative motion of the desired boundary. Big disadvantage; in addition, due to the need for multiple attempts to perform pulse thrust control or continuous thrust control, that is to say, multiple thrusts need to be applied to the controlled satellite, which has the problem of complicated control process

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