To accurately obtain the on-orbit health status of a spacecraft electrical power system,a condition quantitative assessment model for a satellite electrical power system with the fuzzy theory is proposed.First,an index system for evaluating the system condition is established by analyzing the operating characteristics of one satellite electrical power system.Combined with the time-varying characteristics of actual telemetry,the corresponding telemetry pre-processing method for electrical power system and a dimensionless deterioration function are put forward.Then,a hierarchical condition quantitative assessment method for the satellite electrical power system is established through introducing the variable weight theory and fuzzy theory.Finally,the correctness and effectiveness of the proposed condition quantitative assessment method are verified by analyzing the actual on-orbit and simulation data of the satellite and comparing with the traditional method.Moreover,the deteriorated system condition can be assessed by the proposed method two days earlier only based on thresholds.
关键词
卫星/电源系统/状态评估/模糊理论/层次分析法/权重
Key words
Satellite/electrical power system/condition assessment/fuzzy theory/analytic hierarchy process/weight
维普
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