Diagnosis and FTC by Prof. Blanke [pdf] - NTNU

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System behaviour: normal
• System behaviour is in
the green area.
• Point A represents an
observation that may
occur for the given
system.
• Point C represents a pair
that is not consistent
with system dynamics.
System behaviour: norman or with a fault
Mogens Blanke – Spring 2006
• A specific fault change
the behaviour from the
green to the yellow
area.
• If a common input is
applied to the system,
the normal and faulty
cases would respond
differently:
e.g. points A and C.
The normal and the faulty system can be distinguished unless the
observation is in the intersection (point B) between the behaviours.
Mogens Blanke – Spring 2006
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