From 31ad180da6f7debf3fb0c710f339bcd5c8e67a12 Mon Sep 17 00:00:00 2001 From: Robin Clark Date: Mon, 28 Mar 2011 14:17:10 +0100 Subject: [PATCH] lunchtime edit. Checked example diagram consistencies --- fmmd_design_aide/Makefile | 3 ++- logic_diagram/logic_diagram.tex | 16 +++++++++------- 2 files changed, 11 insertions(+), 8 deletions(-) diff --git a/fmmd_design_aide/Makefile b/fmmd_design_aide/Makefile index 857a84c..55adef6 100644 --- a/fmmd_design_aide/Makefile +++ b/fmmd_design_aide/Makefile @@ -6,7 +6,8 @@ paper: paper.tex fmmd_design_aide_paper.tex #latex paper.tex #dvipdf paper pdflatex cannot use eps ffs 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 diff --git a/logic_diagram/logic_diagram.tex b/logic_diagram/logic_diagram.tex index 9d236f2..3f2ddc1 100644 --- a/logic_diagram/logic_diagram.tex +++ b/logic_diagram/logic_diagram.tex @@ -243,7 +243,7 @@ $$ \hat{z} = \bigcap_{c \in \mathcal{X}} {interior} (\hat{c}) %\; \cup \; - \cap % J.Howse correction 25MAR2011 + \; \cap \; % J.Howse correction 25MAR2011 \bigcap_{\hat{c} \in \hat{C}-X} exterior (\hat{c}) $$ @@ -856,24 +856,26 @@ The test case AFE represents the condition where all four engines have failed \c \end{figure} \section{Conclusion} - +% Elevator Pitch 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. % Because PLD's model failure modes generally, they are not constrained to any particular discipline. % -Most methodologies are aimed at solving problems for a particular discipline, -UML for instance is only suitable for modelling software. +Most failure mode methodologies are focussed on solving problems for a particular discipline; +UML for instance is only suitable for modelling software; FMEA, FMEDA and FMECA are good at modelling electronic and mechanical systems, but struggle with software. % -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. % PLD's can be used to model Mechanical, Electrical and Software -failure modes. More importantly the interfaces between these disciplines can be modelled -seamlessly. +failure modes. More importantly the interfaces between these disciplines can be modelled +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. % Elevator Pitch %\pagebreak[4]