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25APR2010

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Robin 2010-04-25 12:40:03 +01:00
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introduction/introduction.tex
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@ -9,12 +9,16 @@ the design of safety critical systems.
The initial motivation for this study was to create a system The initial motivation for this study was to create a system
applicable to industrial burner controllers. applicable to industrial burner controllers.
The methodology developed was designed to cope with The methodology developed was designed to cope with
both the specific `simultaneous failures'\cite{EN298},\cite{EN230},\cite{EN12067} both the
and the probability to dangerous fault approach\cite{EN61508}. deterministic
and
probablistic approaches.
%specific `simultaneous failures'\cite{EN298},\cite{EN230},\cite{EN12067}
%and the probability to dangerous fault approach\cite{EN61508}.
The visual notation developed was initially designed for electronic fault modelling. The visual notation developed was initially designed for electronic fault modelling.
However, it was relaised that could be applied to mechanical and software domains as well. However, it was realised that could be applied to mechanical and software domains as well.
This changed the target for the study slightly to encompass these domains in a common notation. This changed the target for the study slightly to encompass these three domains in a common notation.
\section{Background} \section{Background}
@ -221,6 +225,10 @@ overdoses.
Any new safety critical analysis methodology should Any new safety critical analysis methodology should
be able to model software, electrical and hardware faults using be able to model software, electrical and hardware faults using
a common notation. a common notation.
Ideally the tool should be automated so that it can
seamlessly analyse the entire system, and apply
rigorous checking to ensure that no
fault conditions are missed.
% http://en.wikipedia.org/wiki/Autopilot % http://en.wikipedia.org/wiki/Autopilot