应用模糊理论的卫星电源系统状态量化评估方法  

Condition Quantitative Assessment Method for Satellite Electrical Power System with Fuzzy Theory

作　　者：杨东 刘治钢[1] 穆浩 YANG Dong;LIU Zhigang;MU Hao(Power Supply Technology Research Office,Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部供配电技术研究室,北京100094

出　　处：《电源学报》2024年第1期212-221,共10页Journal of Power Supply

基　　金：国家自然科学基金青年基金资助项目(51707011)。

摘　　要：为了准确获取航天器电源系统在轨健康状态,提出了基于模糊理论的卫星电源系统状态量化评估模型。首先,通过分析某卫星电源系统的运行特点,建立了系统状态评估指标体系;结合实际遥测具有的时变特性,提出电源系统遥测预处理方法和无量纲劣化度函数;其次,引入变权理论和模糊理论,建立了层层递进的卫星电源系统状态量化评估方法;最后,通过该卫星实际在轨和仿真数据,并与传统方法进行了比较,验证了所提状态量化评估方法的正确性和有效性,且所提出的方法比仅依据阈值判断提前2天评估出系统状态恶化。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 

分 类 号：TM92[电气工程—电力电子与电力传动]