Spacecraft anti-interference attitude control method in condition of damaged actuating mechanism

Abstract

The invention relates to a spacecraft anti-interference attitude control method in a condition of a damaged actuating mechanism. The method provides a spacecraft anti-interference attitude control system for conditions that a spacecraft actuating mechanism is physically attacked by an opponent in a space confrontation and a spacecraft platform has an external environment interference and a systemnon-modeling dynamic influence. The method includes: firstly, establishing a spacecraft attitude control system model in conditions of the damaged actuating mechanism, the external environment interference and the system non-modeling dynamic influence; then designing an interference observer, and estimating an equivalence interference caused by the external environment interference and the systemnon-modeling dynamics; designing a learning observer for an actuating mechanism failure fault, caused by an attack, of the actuating mechanism, and reconstructing the actuating mechanism fault; and finally designing a composite controller according to an equivalence interference estimate and actuating mechanism fault reconstruction information, and constructing the spacecraft anti-interference attitude control method in the condition of the damaged actuating mechanism. The method is applicable to high-precision and high-reliability control of the spacecraft attitude control system.

Description

technical field [0001] The invention relates to an anti-interference attitude control method of a spacecraft under a damaged actuator, which can realize fault reconstruction and multi-source interference suppression and compensation under a damaged actuator of a spacecraft in a space confrontation environment, and can be used for attitude control of a spacecraft High precision and high reliability control of the system. Background technique [0002] With the rapid evolution of space militarization, outer space has gradually become the strategic commanding heights for all countries in the world to safeguard national security and vital interests, and the confrontation in the military field has also expanded to outer space. In the process of precision strike on the ground, the attitude control system needs to be aimed at the ground strike target with high precision and high reliability. Therefore, higher requirements are put forward for the attitude control system of the space...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: Aiming at the failure of the actuator caused by the platform attack in the space counterattack to the attitude control system of the spacecraft and the problems of external environment interference and unmodeled dynamics of the system, a damaged actuator is designed. The spacecraft anti-jamming attitude control method has the advantages of high control precision and high reliability

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