Compound layered anti-disturbance attitude stable control method for assembled spacecraft

Abstract

The present invention relates to a compound layered anti-disturbance attitude stable control method for an assembled spacecraft. The compound layered anti-disturbance attitude stable control method is designed according to disturbance brought by rotational inertia uncertainty and unmodeled dynamics in an attitude stable control process of the assembled spacecraft. The method includes the following steps that: an assembled spacecraft kinematics and dynamics model under a multi-source disturbance environment is built; a disturbance observer is designed according to disturbance brought by rotational inertia uncertainty and unmodeled dynamics in the assembled spacecraft kinematics and dynamics model to evaluate the disturbance; an assembled spacecraft anti-windup attitude stable controller is designed, and a control instruction which can make the three-axis attitudes of the assembled spacecraft stable is solved; and the disturbance observer and the assembled spacecraft anti-windup attitude stable controller are compound, so that the compound layered anti-disturbance attitude stable control method of the assembled spacecraft can be realized. The compound layered anti-disturbance attitude stable control method for the assembled spacecraft of the invention has the advantages of strong anti-interference ability and high reliability, and is suitable for attitude stable control of novel assembled spacecrafts.

Description

technical field [0001] The present invention designs a composite layered anti-jamming attitude stabilization control method for an assembled spacecraft, which is mainly used in the interference caused by the uncertainty of the moment of inertia and the unmodeled dynamics and the saturation of the actuator when the new-type assembled spacecraft in space is affected. Attitude stabilization control under limited conditions. Background technique [0002] Combined spacecraft refers to a type of spacecraft that is composed of two or more spacecraft units through docking or capture due to the needs of complex space tasks. The main combination types include rendezvous and docking between large space stations and spacecraft, abandoned Satellites and service satellites, space debris and capture satellites and space robots, etc. This type of spacecraft is mainly used to complete complex and difficult space tasks, and the attitude stability control of the combined spacecraft is a prere...

AI Technical Summary

Problems solved by technology

[0005] The technical solution of the present invention is to provide a composite layered anti-jamming attitude for the composite spacecraft under the condition that the combined spacecraft is affected by the interference caused by the uncertainty of the moment of inertia and the unmodeled dynamics, and the actuator has a saturation limit. The stability control method solves the problem that the control accuracy of the combined spacecraft is reduced due to the influence of interference and the limitation of the actuator in the attitude stability control, improves the control accuracy of the combined spacecraft, enhances the robustness, and has strong anti-interference , the advantage of high reliability

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