Spacecraft formation flying relative position cooperative control method based on event triggering

Abstract

The invention discloses a spacecraft formation flying relative position cooperative control method based on event triggering. The spacecraft formation flying relative position cooperative control method based on event triggering comprises the steps of: establishing a relative position error dynamics model of a spacecraft formation flying process by considering that an external disturbance condition exists; on the basis of a graph theory, performing communication condition description on a spacecraft formation flying system; by considering that communication resources are limited, designing a virtual speed controller based on an event triggering strategy; and designing actual control input based on the virtual speed controller. By means of the method, the formation configuration is kept same while overall position maneuvering of formation spacecrafts is realized; and furthermore, the method has the advantages of being high in anti-interference capability, effectively reducing the communication capacity between the formation spacecrafts and the like, and is suitable for spacecraft formation flying relative position cooperative control.

Description

technical field [0001] The invention belongs to the technical field of spacecraft control, and in particular relates to an event-triggered relative position cooperative control method for spacecraft formation flight. Background technique [0002] The spacecraft formation flight system maintains a certain stable configuration in space by using multiple small spacecraft to communicate with each other, and cooperates to complete spacecraft tasks such as gravity field measurement, three-dimensional imaging, and space optical virtual imaging. Compared with a single large spacecraft, the spacecraft formation flight system has the advantages of short research and development cycle, relatively low cost, strong system applicability, high reliability, and fast response to tasks. It plays an important role in deep space exploration, scientific experiments and other fields. increasingly important role. When the spacecraft formation flight system is performing tasks, the formation of sp...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to solve the problems of limited communication resources and external disturbances in the spacecraft formation flight system, a relative position cooperative control method is proposed, which is robust and can reduce the communication between formation spacecraft. The quantitative control method solves the problem of relative position cooperative control of the spacecraft formation flight system in the coordinated position maneuvering process, limited communication resources, and under the influence of external disturbances, so that the spacecraft formation flight system greatly reduces the pressure of formation spaceflight. Resource occupancy for communication between devices, and has anti-interference ability

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