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lunchtime edit. Checked example diagram consistencies

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Robin Clark 2011-03-28 14:17:10 +01:00
parent 492eb82704
commit 31ad180da6
2 changed files with 11 additions and 8 deletions
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3
fmmd_design_aide/Makefile
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@ -6,7 +6,8 @@ paper: paper.tex fmmd_design_aide_paper.tex
#latex paper.tex #latex paper.tex
#dvipdf paper pdflatex cannot use eps ffs #dvipdf paper pdflatex cannot use eps ffs
pdflatex paper.tex pdflatex paper.tex
okular paper.pdf mv paper.pdf fmmd_design_aide_paper.pdf
okular fmmd_design_aide_paper.pdf
# Remove the need for referncing graphics in subdirectories # Remove the need for referncing graphics in subdirectories

16
logic_diagram/logic_diagram.tex
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@ -243,7 +243,7 @@ $$ \hat{z} = \bigcap_{c \in \mathcal{X}}
{interior} {interior}
(\hat{c}) (\hat{c})
%\; \cup \; %\; \cup \;
\cap % J.Howse correction 25MAR2011 \; \cap \; % J.Howse correction 25MAR2011
\bigcap_{\hat{c} \in \hat{C}-X} \bigcap_{\hat{c} \in \hat{C}-X}
exterior (\hat{c}) exterior (\hat{c})
$$ $$
@ -856,24 +856,26 @@ The test case AFE represents the condition where all four engines have failed \c
\end{figure} \end{figure}
\section{Conclusion} \section{Conclusion}
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PLD's provide a means to visually model failure modes within {\fgs} and after analysis PLD's provide a means to visually model failure modes within {\fgs} and after analysis
of the test cases, extract the {\fg}'s common failure symptoms. of the test cases, extract the {\fg}'s common failure symptoms.
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Because PLD's model failure modes generally, they are not constrained to Because PLD's model failure modes generally, they are not constrained to
any particular discipline. any particular discipline.
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Most methodologies are aimed at solving problems for a particular discipline, Most failure mode methodologies are focussed on solving problems for a particular discipline;
UML for instance is only suitable for modelling software. UML for instance is only suitable for modelling software;
FMEA, FMEDA and FMECA are good at modelling FMEA, FMEDA and FMECA are good at modelling
electronic and mechanical systems, but struggle with software. electronic and mechanical systems, but struggle with software.
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FTA models all systems, but from the top down, and rarely giving complete coverage FTA models all systems, but from the top down rarely giving complete coverage
to all base component failure modes. to all base component failure modes.
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PLD's can be used to model Mechanical, Electrical and Software PLD's can be used to model Mechanical, Electrical and Software
failure modes. More importantly the interfaces between these disciplines can be modelled failure modes. More importantly the interfaces between these disciplines can be modelled
seamlessly. seamlessly. The bottom-up nature of its associated methodology, Failure Mode Modular De-Composition (FMMD)
ensures that complete coverage of all base~component failures modes
can be ensured.
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%\pagebreak[4] %\pagebreak[4]