Method and system for driving solar wing to face the sun through low-inclination-angle orbit single-shaft SADA

Abstract

The invention provides a method for driving a solar wing to face the sun through a low-inclination-angle orbit uniaxial SADA. The method comprises the following steps: S1, determining coordinates of asolar vector in an orbit system by an on-board sensor; S2, calculating a satellite yaw angle according to the projection of the sun vector on the XoOYo plane of the orbit; S3, calculating expected yaw angle and angular velocity information in satellite attitude motion; S4, calculating the rotation angle of a solar wing driving device according to an included angle between the normal coordinate ofthe solar panel and the solar vector when the solar wing driving device is in a zero position; and S5, controlling the satellite to maneuver by the on-board actuating mechanism, and rotating the solar wing driving device in a matching mode to ensure that the solar wing points to the sun. The invention further provides a system for driving the solar wing to face the sun through the low-inclination-angle orbit single-shaft SADA. The method has the advantages that the single-axis SADA is used for replacing the double-axis SADA in the low-inclination-angle orbit to achieve sun orientation of thesolar wing, cost is reduced, reliability is improved, and control is easy.

Description

technical field [0001] The present invention relates to a method for driving a solar wing towards the sun, in particular to a method and a system for driving a solar wing towards the sun with a low-inclination orbit single-axis SADA. Background technique [0002] The Solar Array Drive Assembly (SADA) is used to support the solar wing and drive the solar cell array toward the sun, so that the solar cell can achieve the highest possible utilization rate and meet the energy supply needs of the spacecraft in orbit. [0003] The small satellite network realizes low-orbit communication. The orbit is generally a low-inclination orbit, and the sun angle changes with time. It is necessary to use a dual-axis SADA to drive the solar wing. However, the dual-axis SADA has the defects of high cost, low reliability, and complicated control. [0004] However, the current single-axis SADA is mainly used in sun-synchronous orbits or geosynchronous orbits, and is not suitable for low-inclinati...

AI Technical Summary

Problems solved by technology

[0003] The small satellite network realizes low-orbit communication. The orbit is generally a low-inclination orbit, and the sun angle changes with time. It is necessary to use a dual-axis SADA to drive the solar wing. However, the dual-axis SADA has the defects of high cost, low reliability, and complicated control.

[0004] However, the current single-axis SADA is mainly used in sun-synchronous orbits or geosynchronous orbits, and is not suitable for low-inclination orbits.

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