101 lines
3.2 KiB
TeX
101 lines
3.2 KiB
TeX
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\ifthenelse {\boolean{paper}}
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{
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\abstract{
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This paper describes how the Failure Mode Modular De-composition (FMMD) methodology
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can be applied to the problems of common mode failure
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analysis.
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%
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Common mode failures are often difficult to
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determine in embedded real time systems.
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%
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Environmental effects can lead to component failure
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modes, that can occur in separate sub-systems
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in a system, but interact to create unexpected fault.
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% WHAT IS DID
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The FMMD methodology can model and warn for two types of common mode failures.
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Failures caused by separate sub-systems relying on
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a common component, and environmental effects that can induce failure
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modes in components in separate sub-systems.
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% WHAT I FOUND
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From the FMMD data model it is possible to link the environmental effects
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and ensure determine the weak points in a design, where the failure modes may interact.
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For the component dependency case, the dependent component
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can be automatically highlighted by traversing the data model.
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% WHY YOU WOULD WANT TO READ IT
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This feature of FMMD proides another tool in the safety engineers
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repotiore, one that can shake out difficult to find common mode failure
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effects.
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}
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}
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{
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\paragraph{Chapter overview}
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This chapter describes how the % Failure Mode Modular De-composition (FMMD)
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FMMD methodology
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can be applied to the problems of common mode failure
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analysis.
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%
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Common mode failures are often difficult to
|
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determine in embedded real time systems.
|
|
%
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Environmental effects can lead to component failure
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modes, that can occur in separate sub-systems
|
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in a system, but interact to create unexpected fault.
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% WHAT IS DID
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The FMMD methodology can model and warn for two types of common mode failures.
|
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Failures caused by separate sub-systems relying on
|
|
a common component, and environmental effects that can induce failure
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modes in components in separate sub-systems.
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|
% WHAT I FOUND
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From the FMMD data model it is possible to link the environmental effects
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and ensure determine the weak points in a design, where the failure modes may interact.
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For the component dependency case, the dependent component
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can be automatically highlighted by traversing the data model.
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% WHY YOU WOULD WANT TO READ IT
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This feature of FMMD proides another tool in the safety engineers
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repotiore, one that can shake out difficult to find common mode failure
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effects.
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}
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\section{Introduction}
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{\huge MIGHT BECOME A PAPER IN ITS OWN RIGHT. WILL PROB BE PART OF DATA MODEL CHAPTER FOR NOW 22NOV2010 }
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\ifthenelse {\boolean{paper}}
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{
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paper
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}
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{
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chapter
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}
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Outline the fmmd process.
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Show modules with common dependencies (like on a power supply, a powersupply could have a fault
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like nopisy output)
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Trace a theoretical example and show how FMMD detects this (common dependency - like two
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{\dc}s being depemdent on the same failure mode.
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Then show an environmental effect, such as temperature and how
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it can induce faults in sepatate modulkes that
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would not be obviously related.
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Trace a theoretical example and show how FMMD detects this
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i.e. the environmental factor affecting both systems and causing a problem.
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what about the third way it can be affected.
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Like a chain of relays...... all could get welded .... think about that one.....
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