Spacecraft attitude control method for sensor under attack in space confrontation environment

Abstract

The invention relates to a spacecraft attitude control method for a sensor under attack in a space confrontation environment. The method aims at attitude control for the spacecraft sensor under attackin a complex space environment. The method comprises the steps that first, a spacecraft attitude control system model with sensor attack and external environment interference is established; secondly, a disturbance observer is designed to estimate the external environment interference received by a system without considering the sensor attack; again, based on the external environment interferenceestimation value, an output filter and an unknown input learning observer are designed to estimate an attack signal in the sensor information; and finally, the attack signal estimation value and theexternal environment interference estimation value are combined to design a composite controller to construct the spacecraft attitude control method for the sensor under attack in the space confrontation environment. The method provided by the invention has the characteristics of high anti-interference, high reliability and high engineering practicability, and is suitable for high-precision andhigh-reliability control of the spacecraft attitude control system under the condition that the sensor information is attacked.

Description

technical field [0001] The invention relates to a spacecraft attitude control method in which a sensor is attacked in a space confrontation environment, which can realize simultaneous estimation and offset of sensor attack and external environment interference, and can be used for spacecraft self-discussion when the spacecraft sensor is attacked in a complex space environment High-precision and high-reliability control of the control 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 space confrontation, spacecraft can not only be used as a weapon to accurately strike ground targets, but also provide key information such as battlefield reconnaissance intelligence, navigation and positioning, and missile early war...

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the technology of the present invention is: for the spacecraft control problem under the complex space environment, the spacecraft control system is not only disturbed by the space environment, but also the sensor sensor system is attacked at the same time, and a sensor is attacked in a space countermeasure environment. The spacecraft attitude control method has the advantages of high anti-interference, high reliability, and strong engineering practicability

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