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Robin Clark 2013-09-25 19:53:38 +01:00
parent 771f6bee4a
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submission_thesis/CH3_FMEA_criticism/copy.tex
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@ -22,7 +22,7 @@ and look for ways in which it could be performed better and more efficiently.
A major problem is with the scope of A major problem is with the scope of
examination---i.e. which/how~many components should be checked against a particular failure mode---to examination---i.e. which/how~many components should be checked against a particular failure mode---to
apply for FMEA analysis. apply FMEA analysis.
% %
\fmmdglossSTATEEX \fmmdglossSTATEEX
Checking all possible combinations of {\fms} against all components quickly leads to a state explosion problem. %: Checking all possible combinations of {\fms} against all components quickly leads to a state explosion problem. %:
@ -118,7 +118,7 @@ typically sensors and actuators connected to an industrially hardened computer b
With traditional FMEA it is difficult to deal with With traditional FMEA it is difficult to deal with
a `plug~and~play' paradigm. a `plug~and~play' paradigm.
% %
The design philosophy of FMEA is to trace {\bc} failure through to system failures. The design philosophy of FMEA is to trace {\bc} failures through to system failures.
This is incompatible with a modular approach where the architecture of a This is incompatible with a modular approach where the architecture of a
system may be different for implementation sites. system may be different for implementation sites.
% %