Fault Diagnosis utilizing Structural Analysis
When designing model-based fault-diagnosis systems, the use of consistency
relations (also called e.g. parity relations) is a common choice. Different
sensitive to different subsets of faults, and thereby isolation can be
achieved. This paper
presents an algorithm for finding a small set of submodels that can be
used to derive consistency relations with highest possible diagnosis
The algorithm handles differential algebraic models and
is based on graph theoretical reasoning about structure of the model.
An important step, towards finding these submodels and therefore also
finding consistency relations, is to find all minimal structurally singular
(MSS) sets of
equations. These sets characterize the fault diagnosability.
Mattias Krysander and Mattias Nyberg
Senast uppdaterad: 2019-06-05