The component-level and system-level satellite power system health state evaluation method

The health state evaluation method is one of the key technologies of Prognostic and Health Management (PHM). Through the health assessment of the satellite power system, it can timely find the potential trend of health degradation and hidden danger of influence of health level, thus improving the level of effectiveness, precision and autonomation of the power system management. Firstly, it analyzed the health definition and hierarchy division method of the satellite power system, then it proposed and studied the power supply system-level health state evaluation method based on fuzzy analytic hierarchy process (AHP), and the component-level health condition assessment methods based on the statistical analysis, Bayesian network and Support Vector Machine (SVM) respectively. The experimental results verified the effectiveness of the proposed health state evaluation method.