Geosynchronous orbit satellite solar cell array closed-loop counterglow tracking method and system

Abstract

The invention provides a geosynchronous orbit satellite solar cell array closed-loop counterglow tracking method. The geosynchronous orbit satellite solar cell array closed-loop counterglow tracking method comprises the following steps: S1, a solar tracking angle is calculated, specifically, the solar tracking angle is calculated according to a current signal output by an analog solar sensor; S2,the solar tracking angle is subjected to filtering processing; S3, solar array coarse counterglow is conducted; S4, solar array closed-loop fine counterglow is conducted; and S5, shadow period judgment and control are conducted, specifically, whether a geosynchronous orbit satellite is in the shadow period or not is judged, and if the geosynchronous orbit satellite is in the shadow period, a solararray is transferred into a shadow zone control mode. According to the geosynchronous orbit satellite solar cell array closed-loop counterglow tracking control method, an autonomous feedback closed-loop control system on the satellite is formed by taking the analog solar sensor mounted on the solar array as a sensor, taking a solar array driving mechanism as an executing mechanism and taking a control computer as a controller, the solar array accurately points to the sun in real time, and the geosynchronous orbit satellite solar cell array closed-loop counterglow tracking method can be applied to the research and development processes of geosynchronous orbit satellite platforms in China.

Description

Technical field [0001] The invention relates to the technical field of space vehicles, in particular to a closed-loop sun tracking method and a tracking system for a solar cell array of a geostationary orbit satellite. Background technique [0002] Traditional geostationary orbit satellites use open-loop tracking or incremental adjustment + hold methods to achieve solar array tracking control over the sun. In the open-loop tracking mode, the control computer drives the solar array at a fixed speed. However, due to the limited speed subdivision capability of the solar array drive mechanism, there is a certain deviation between the solar array driving speed and the sun's rotation around the satellite. After a long time accumulation, the ground must be interrupted. The process is operated remotely to adjust the tracking angle of the solar array. In the incremental adjustment + hold mode, the control computer takes the measured or calculated solar tracking angle as input. When the s...

AI Technical Summary

Problems solved by technology

However, this method does not describe the method for the satellite in geostationary orbit to realize the precise alignment of the sun array through the rotation speed adjustment control according to the measurement value of the sensor.

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