A high-precision self-diagnosis method for satellite solar wing output current

Abstract

The invention relates to a high-precision autonomous diagnosis method for a satellite solar wing output current, and belongs to the technical field of on-orbit satellite solar wing detection. The method comprises the following steps: 1, establishing a satellite body coordinate system OXYZ; 2, extracting a solar wing output current data sequence TMN01 in the +Y direction and a solar wing output current data sequence TMN02 in the -Y direction in a current satellite orbit period; 3, calculating a current ratio sequence TMN03; 4, calculating a normal change range [lower, upper] of the current ratio sequence TMN03; 5, calculating a current ratio TMN03' transmitted by the on-orbit satellite at the current moment; and 6, comparing and judging the current ratio TMN03' with a normal change range [low, upper] to obtain the detection result of the abnormal output current of the solar wing of the on-orbit satellite. According to the method, high-precision anomaly detection can be realized according to the change characteristics of the output current of the solar wing of the on-orbit satellite, and meanwhile, the method is low in input requirement, low in calculation complexity and high in adaptability.

Description

Technical field [0001] The invention belongs to the technical field of on-orbit satellite solar wing detection, and relates to a high-precision self-diagnosing method for satellite solar wing output current. Background technique [0002] With the rapid development of my country's aerospace industry, the number of satellites in orbit is increasing year by year. In order to detect satellite failures in time, ensure the safe and stable operation of satellites, effectively improve the ability to ensure the safe operation of satellites in orbit, and reduce the number of satellites in orbit. Risk, which requires the realization of refined and automated anomaly detection of satellite telemetry data in orbit. [0003] The satellite power sub-system provides electrical power for the entire satellite during its entire life: in the illuminated area of ​​the orbit operation, the solar cell array is used to convert solar energy into electrical energy to supply power to the equipment on the satel...

AI Technical Summary

Problems solved by technology

This method needs to be calculated based on a number of parameters. The orbital data needs to be updated regularly and the calculation method needs to be continuously corrected. Therefore, its calculation complexity is high and the work complexity is high.

[0011] In view of the changing characteristics of the output current of the solar wing of the satellite in orbit, the accuracy of the theoretical calculation results is lower than that of the comparison method

In view of the changing characteristics of the solar wing output current of the satellite in orbit, the theoretical calculation results are more complex when interpreting the data in the satellite attitude maneuver state than the comparison method

In view of the changing characteristics of the solar wing output current of satellites in orbit, the comparison method of theoretical calculation results can be better solved, but the orbit data needs to be updated regularly, and the overall calculation complexity is high, and the physical model of the solar wing output current needs to be constantly revised.

To sum up, the existing three methods are difficult to realize the abnormal detection of the output current of the solar wing of the orbiting satellite with high precision and autonomously.

Images