An Anti-jamming Attitude Control Method for No Tow Satellite

Abstract

The present invention relates to an anti-interference attitude control method of a drag-free satellite. Aiming at a drag-free satellite attitude channel consisting of environment interference torque, inertia uncertainty, actuating mechanism noise and unmodeled dynamics multi-source interference, the method comprises: performing analyzing and processing the multi-source interference of the drag-free satellite attitude channel, and building a system model including the multi-source interference; secondly, designing a interference observer to estimate and compensate the environment interference torque, inhibiting the interferences which are bounded to the norm through adoption of robustness H (infinity) / H2 control, and optimizing the Gaussian white noise; and finally, compositing the control based on the interference observer and the robustness H (infinity) / H2 control, forming an anti-interference controller, and solving the gain matrixes of the interference observer and the anti-interference controller. The anti-interference attitude control method of a drag-free satellite is high in anti-interference capability, is high in control precision and the like, and is able to be used in the attitude control of a drag-free satellite.

Description

technical field [0001] The invention relates to an anti-jamming attitude control method of a non-towling satellite, which fully utilizes the characteristics of different interferences of the non-towling satellite attitude channel, can suppress and compensate multi-source interference simultaneously, and can be used for the anti-jamming attitude control of low-orbit satellites. Background technique [0002] Tow-free satellites are currently widely used in the measurement of the Earth's gravity gradient field. The high-precision Earth's gravity gradient field model can meet the urgent needs of earthquake monitoring, surveying and mapping support, marine meteorology, and resource exploration, which greatly promotes disaster prevention and economic development in China. Social development. However, in order to meet the measurement requirements of a tow-free satellite, the attitude control of the satellite must make the satellite itself track the orbital coordinate system with hi...

AI Technical Summary

Problems solved by technology

[0004] The technical solution of the present invention is to overcome the problem that the existing attitude control algorithm for non-drag satellites can only address a single type of interference and the control accuracy is not high, and propose an anti-interference controller with both interference compensation and interference suppression capabilities , where DOBC estimates and compensates for environmental disturbances, H ∞ / H 2 Controls suppress norm-bounded disturbances and optimize for white Gaussian noise

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