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Robin Clark 2011-02-24 13:47:07 +00:00
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\ifthenelse {\boolean{paper}} \ifthenelse {\boolean{paper}}
{ {
\begin{abstract} \begin{abstract}
This paper shows a practical example of a functional group of base components This paper shows a practical example of
used to create a derived component. An industry standard temperature measurement circuit, one `symptom~abstraction' stage in the FMMD process.
We take a functional group of base components,
and using their failure modes, analyse the circuit
to find failure symptoms.
These failure symptoms are used to define
a derived component.
%
An industry standard temperature measurement circuit,
the PT100 is described and then analysed using the FMMD methodology. the PT100 is described and then analysed using the FMMD methodology.
A derived component, representing this circuit is then presented. A derived component, representing this circuit is then presented.
@ -30,13 +37,20 @@ from an FMEA persepective as a component itself, with a set of known failure mod
} }
{ {
\section{Overview} \section{Overview}
This chapter intends to show a practical example of a functional group of base components
used to create a derived component. An industry standard temperature measurement circuit, This chapter shows a practical example of
one `symptom~abstraction' stage in the FMMD process.
We take a functional group of base components,
and using their failure modes, analyse the circuit
to find failure symptoms.
These failure symptoms are used to define
a derived component.
%
An industry standard temperature measurement circuit,
the PT100 is described and then analysed using the FMMD methodology. the PT100 is described and then analysed using the FMMD methodology.
A derived component, representing this circuit is then presented. A derived component, representing this circuit is then presented.
The PT100, or platinum wire \ohms{100} sensor is The PT100, or platinum wire \ohms{100} sensor is
a widely used industrial temperature sensor that is a widely used industrial temperature sensor that is
slowly replacing the use of thermocouples in many slowly replacing the use of thermocouples in many