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A Layered Model-Based Diagnosis: Application to a Gear Box System
Published May 21, 2008 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Meeting
Two layers diagnosis system is proposed for a passenger car gearbox system. Conventional physical constraints-based diagnosis is placed on the base layer. Model-based diagnosis and specific symptom finding diagnosis are built on the second layer. Diagnosis rules for the first layer are described in a tabular form and algorithm is described with symbolic coding tool. The residual method was selected for the model-based diagnosis. Proposed strategy was implemented into time domain simulation. Response and resolution of the FDI system were discussed and evaluated. A simulation study illustrates the proposed diagnosis process and shows effectiveness of the method.