Qualitative Analysis of Electrical Circuits for Computer-based Diagnostic Decision Tree Generation
نویسندگان
چکیده
Qualitative reasoning about fault effects in electrical circuits has reached a level of achievement which allows it to be used for real world industrial applications . Dealing with electrical circuits of forklifts, our work focuses on automated diagnostic decision tree generation grounded on model-based predictions of correct and faulty device behavior. In this paper, we discuss requirements for electrical circuit analysis arising from this task. According to these requirements, we developed a new method for Qualitative electrical Network Analysis (QNA) which is the main subject of this paper. QNA's qualitative calculus allows reasoning about actual parameter values and deviations from reference values . The calculus is specifically designed to avoid spurious solutions . To facilitate adequate device modeling, QNA supports that electrical design experts guide the modeling process, bringing in their knowledge concerning intended device behavior and negligible physical phenomena . We successfully evaluated QNA in our application domain .
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