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. Environmental and operational states

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And where they should be applied
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Robin Clark 2010-11-08 10:34:28 +00:00
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fmmd_concept/fmmd_concept.tex
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@ -610,6 +610,31 @@ new {\fg}s and we can build a hierarchical `failure~mode' model of the SYSTEM.
NEED DIAGRAM OF HIERACY
\vspace{20pt}
\subsection{Environmental and Operational States and FMMD}
Introduce the ideas
\subsubsection {Environmental Conditions and FMMD}
HERE talk about environmental effects of a sub-system.
Define this further by identifying that
environmental conditions affect components
for instance a system may be speced for
0 to 85oC operation, but some components
may show failure behaviour between 60 and 85
\subsubsection {Operational States and FMMD}
HERE talk about operational states of a sub-system
Define this further by stating that
operational states are effects on a functional group.
For instance a circuit may have a test line input.
The fnctional group will there fore have two
operational states, testing mode and normal mode.
\subsection{Justification of wishlist}
By applying the methodology in section \ref{fmmdproc}, the wishlist can