ON-ORBIT DYNAMIC HEALTH MONITORING SYSTEM OF SPACECRFT ELECTRICAL POWER SYSTEM
- Paper number
IAC-08.C3.3.6
- Author
Ms. Xiaobin Deng, China Academy of Space Technology (CAST), China
- Coauthor
Mr. xiaoye tan, China Academy of Space Technology, China
- Coauthor
Prof. Wan Cheng'an, China Academy of Space Technology, China
- Year
2008
- Abstract
We report on the design and development of a dynamic health monitoring approach for spacecraft electric power system (EPS). Several important compartments of spacecraft electric power system are modeled with using of large signal approach. We utilized the electrical power system of the space lab as the physical system of interest. A health monitoring system typically involves multiple sensors whose readings can indicate malfunctions. A dynamic health monitoring approach is based on the symptoms of the electrical power system malfunctions. Dynamic health monitoring systems operate in near real time on orbit. From large or complex sensors' data, we use data mining approach to get the symptoms finding algorithms. Our work has focused on the design and development of a dynamic health monitoring system (DHMS) that serves as a conceptual prototype for autonomous health monitoring systems for support of china space lab. The spacecraft telemetries are main resource for on-orbit performance analysis, DHMS can suggest that the key parameters of important compartments should be measure for EPS health analysis on-orbit. The electrical characteristics of EPS’ failure are modeled after considering all the standard factors such as degradations, short circuit and open circuit. The required correction factors are applied and the data is further processed to predict the on-orbit performance of the DHMS. The observed and the predicted performance are closely matching.
- Abstract document
- Manuscript document
IAC-08.C3.3.6.pdf (🔒 authorized access only).
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