A multi-level collaborative planning and agile maneuvering method for spacecraft three-superior control

Abstract

A spacecraft three-super-control multi-level collaborative planning and agile maneuvering method is applicable to the field of spacecraft relative motion control. When the relative attitude of the tracking spacecraft and the target spacecraft is relatively large, the initial relative attitude of the tracking spacecraft and the target spacecraft is obtained by orbit extrapolation, and the first-level controller of the tracking spacecraft is designed to achieve agile maneuvering to the target spacecraft. direction. When the relative attitude of the tracking spacecraft and the target spacecraft is small, the attitude planning of the payload target is carried out through the optical camera. A secondary attitude controller for the load is designed, and the measurement information of the optical load is used as feedback to realize the high-precision pointing control of the load optical axis to the target spacecraft. At the same time, in order to solve the problem of different periods between tracking spacecraft stars and payload controllers, a multi-level collaborative planning method for tracking spacecraft is designed, and the attitude sent by the satellite platform is used for trajectory interpolation to realize high-precision tracking of the payload to the target attitude.

Description

technical field [0001] The invention belongs to the field of spacecraft attitude control, and relates to a spacecraft three-superior control multi-level collaborative planning and agile maneuvering method, which can effectively realize the agile maneuvering control of tracking the spacecraft and pointing to the target spacecraft with high precision. Background technique [0002] At present, the spacecraft has put forward three super (ultra-high precision, ultra-high stability, and ultra-agility) requirements for tracking control. During the pointing and tracking mission of the target spacecraft, it is required that the optical load in the tracking spacecraft can point to the target spacecraft and carry out High-precision attitude tracking and holding control to obtain clear and stable image information of the target spacecraft. During the entire tracking process, it is necessary to keep the y-axis (solar wing) of the tracking spacecraft pointing to the sun as much as possibl...

AI Technical Summary

Problems solved by technology

Existing trajectory planning methods are difficult to meet the requirements of high precision pointing control and dynamic changes in relative attitude.

[0005] 2. It is difficult to realize the dynamic trajectory planning of the two-level control system

The existing trajectory planning method is difficult to realize the dynamic planning of the secondary target trajectory of the load based on the optical camera measurement

[0007] 3. It is difficult to realize the control coordination planning of the two-level control system

Due to the difference between the control period of the tracking spacecraft star and the load, the star control period is much longer than the load control period, the existing attitude planning method can only realize the target attitude planning of the tracking spacecraft star, and cannot realize the secondary target attitude planning of the payload

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