From 1af8fc13c2c403cbdec293fc7324bfff1dd9a44c Mon Sep 17 00:00:00 2001 From: "Robin P. Clark" Date: Thu, 8 Aug 2013 09:35:53 +0100 Subject: [PATCH] itwo amplifiers and compare... --- submission_thesis/CH5_Examples/copy.tex | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/submission_thesis/CH5_Examples/copy.tex b/submission_thesis/CH5_Examples/copy.tex index 364c54e..caa380c 100644 --- a/submission_thesis/CH5_Examples/copy.tex +++ b/submission_thesis/CH5_Examples/copy.tex @@ -909,6 +909,10 @@ Were this failure to have safety implications, this FMMD analysis will have reve this undetectable condition; this would likely prompt re-design of this circuit. A typical way to solve an undetectable fault such as this is to periodically switch in test signals in place of the input signal. +% +Alternatively, two amplifiers could be used with different gains, from the +same outputs, and the results scaled and then compared (perhaps in software) +to detect any failure. %\footnote{A typical way to solve an un-observability such as this is %to periodically switch in test signals in place of the input signal.}.