Framework and Method for Model Based Diagnosis with Application to an Automotive Engine
A general framework and a method for model based diagnosis are
suggested. In the framework, faults and modeling of faults are
formally described. Then the method is used to construct a diagnosis
system based on a structure of hypothesis tests. Using these
principles, it is possible to diagnose a large variety of different
types of faults. The framework and the method are applied to the
design of a diagnosis system for an automotive engine. This
application clearly shows the strength of these principles because
several different types of sensor faults and leakage need to be
diagnosed. The resulting diagnosis system is demonstrated using
experiments on a real automotive engine.
Mattias Nyberg
IFAC,
1999
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