Spacecraft three-super control multistage collaborative planning and agile maneuvering method

Abstract

The invention discloses a spacecraft three-super control multistage collaborative planning and agile maneuvering method, which is suitable for the field of spacecraft relative motion control. When therelative attitude of a tracking spacecraft and a target spacecraft is large, the initial relative attitude of the tracking spacecraft and the target spacecraft is obtained through orbit extrapolation, and a star first-level controller of the tracking spacecraft is designed to achieve agile maneuver so as to rapidly point to the target spacecraft. When the relative attitude of the tracking spacecraft and the target spacecraft is small, load target attitude planning is carried out through the optical camera. A load second-level attitude controller is designed, and taking the measurement information of the optical load as feedback, high-precision pointing control of the load optical axis to the target spacecraft is realized. Meanwhile, aiming at the problem of different periods of the star and load controllers of the tracking spacecraft, a multistage collaborative planning method of the tracking spacecraft is designed, track interpolation is carried out by utilizing an attitude sent by asatellite platform, and high-precision tracking of a target attitude by a load is realized.

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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