DAG DAG DAG DAG DAGAGAGAGAGAGAGAGA

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Robin Clark 2010-11-25 09:29:59 +00:00
parent 923e4713c2
commit 7a88b53c74
3 changed files with 30 additions and 3 deletions

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@ -186,10 +186,25 @@ its range and {\dc} as its domain.
For the sake of example let us determine some arbitary collections
into symptoms. Let us group the symptoms from $ FG^0_1 $ as the following
$ s1 = \{ C_{1 a}, C_{2 b} \}$ and $ s2 = \{ C_{1 b}, C_{2 a} \}$.
We can now create a new {\dc}. This will have an $\alpha$ value higher
than the {\fg} it was derived from.
We can represent the relationships between the failure modes, and desired failure modes or symptoms
as a directed acyclic graph (see figure \ref{fig:dag0}).
thus
\begin{figure}[h]
\centering
\includegraphics[width=200pt,bb=0 0 466 270,keepaspectratio=true]{./fmmd_data_model/dag0.jpg}
% dag0.jpg: 466x270 pixel, 72dpi, 16.44x9.52 cm, bb=0 0 466 270
\caption{DAG reprsenting the failure modes from $FG^0_1$.}
\label{fig:dag0}
\end{figure}
We can now create a new {\dc}. This will have an $\alpha$ value higher
than the any of the components in the {\fg} that it was derived from.
In this case all components were base components and therefore have an $\alpha$ value of zero.
Our derived component can thus take a n $\alpha$ value of one.
Our newly derived component can be
$$ DC^1_1 = \bowtie fm(FG^0_1) .$$
Applying $fm$ to our new derived component will give us our symptoms from functional group $ FG^0_1 $
@ -197,6 +212,18 @@ thus
$$ fm(DC^1_1) = \{s1, s2 \}.$$
We can represent $ DC^1_1 $ as an addition to the DAG (see figure \ref{fig:dag1}).
\begin{figure}[h]
\centering
\includegraphics[width=200pt,bb=0 0 466 270,keepaspectratio=true]{./fmmd_data_model/dag1.jpg}
% dag0.jpg: 466x270 pixel, 72dpi, 16.44x9.52 cm, bb=0 0 466 270
\caption{DAG reprsenting the failure modes from $FG^0_1$ and $ DC^1_1 $.}
\label{fig:dag1}
\end{figure}
UML OBJECT MODEL OF DERIVED COMPONENT TOO