[SI-LIST] Re: [Expert system]

The title of this post caught my attention. I'm not really going to 
comment on where EMC research is going on, however the concept of 
"Expert Systems" as related to EMC and SI has always struck me as a 
misnomer.

I've authored a number of SI related CAD tools and have used many fine 
commercial tools whose end goal is to simplify a complex analysis or 
design task enough that the average experienced engineer can use the 
tools to their advantage. However calling any of these tools "Expert 
Systems" or "Expert Tools" with the intent to imply that knowledge of an 
expert in a field will be imparted to the user by merely utilizing one 
of these tools is a pretty far stretch in my opinion.

While I was at Sun our SI staff had numerous conversations on this topic 
and concluded that these tools should be termed "Tools for Experts" as 
opposed to "Expert Tools". You aren't going to hand a complex tool like 
HFSS or Specctraquest for example, to a new grad or 'Joe Garageshop' and 
expect to get the same results as someone with 20 years of experience in 
the field. (note: by citing a couple tools by name in this paragraph I 
wasn't implying that those particular tools are particularly difficult 
to use, but was just trying to give some non-trivial examples)

I'll accept that a tool for screening a design for EMC flaws and 
red-flags may be a bit more amenable to the concept of an "Expert Tool" 
than say a full-wave 3D FEM extractor, however, if the user is depending 
totally on the tool rather than using it to supplement their knowledge 
and experience, I can't really foresee a good outcome.

anyway, that's my 2 cents for Friday...... :)

-Ray


-- 
Raymond Anderson
Senior Signal Integrity Staff Engineer
Product Technology Dept.
Package Engineering Group
Xilinx Inc.




yous@xxxxxxxxxxxx wrote:

>To Dear All:
>
>Researchers in University of Rolla (UMR) and EMC related companies have
>developed "expert system" to check or detect EMI and EMC problem early.
>
>I wonder whether EMC engineers actually use. If they use, then I wonder to
>what applications they use.
>
>It looks like to me that there are lots of research going on in UMR, but other
>than UMR, I cannot find any papers from any other research group.
>
>Thank you for your comments in advance.
>
>Thank you very much.
>Sincerely,
>Se-Ho You
>(cell) +1-303-818-4352
>
>  
>

 

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