Research on Fault Diagnosis Method of Spacecraft Solar Array Based on f-KNN Algorithm

摘要

Due to the limited data variables of the spacecraft solar array, a comparison was made between the maximum power point voltage and current data of the solar array in the case of normal, short circuit, and irradiation failure. The maximum power point voltage and current data are used as the description of faults as the basis for fault diagnosis. Because of the cross-over phenomenon of the fault samples, the fuzzy K nearest neighbor algorithm was adopted to ensure the simplicity and online realizable as well as improve the accuracy of the diagnosis. The simulation results show the effectiveness of the algorithm by taking the actual simulated fault samples as an example.