Fault diagnosis based on directed factor graph for mode switching spacecraft power system
Spacecraft power system is a complex, highly interconnected hybrid system that exhibit nonlinear and mode switching behaviors. Directed factor graph is an inference model for fault diagnosis using probabilistic reasoning techniques. A novel approach for constructing the directed factor graph structure based on hybrid bond graph model for fault diagnosis in spacecraft power system is proposed. The causeeffect relations between system components status and fault symptoms are identified and concluded through causal path analysis on hybrid bond graph model. A power supply module of a spacecraft power system is provided as case study to show the feasibility and validity of the proposed method.
fault diagnosis hybrid systems spacecraft power system directed factor graph hybrid bond graph cause-effect relation
Xiaolei Zhang Yi Shen Zhenhua Wang
Department of Control Science and Engineering School of Astronautics, Harbin Institute of Technology Harbin, China
国际会议
上海
英文
2008-2012
2011-07-26（万方平台首次上网日期，不代表论文的发表时间）