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RE: Sparklength inquiry/Fuzzy set?
Tesla Modelers
I have been looking at this data over the last several postings. The
comments by John Freau jogged my neural nets functioning. The empirical
data is invaluable. John used what we CS people like to refer to as
"linguistic hedges".
Some time ago Lotfi Zadeh using uncertainty in the way we communicate
developed
fuzzy logic. Since then we and the EE folks have done wonders with fuzzy
sets allowing
clothes dryers to dry more or less, cruise control to work smoothly,
uncertain database query
(my specialty) etc. The membership values for fuzzy set elements are
generally (not necessarily)
determined by empirical data. I suspect, while the Physics is likely sound,
there are
somewhat different parameters that can be handled by BIG, MEDIUM, SMALL,
EXPERT, NOVICE
linguistic hedges built into a fuzzy set model. This currently is simply a
theoretical consideration.
However, when I get done with a grant project (criminal information system
with uncertain query)
this winter I would be happy to work with the group on a "Fuzzy TC Model".
John
John W. Gudenas, Ph.D.
Department Chair of Computer Science and Mathematics
Aurora University, Aurora IL 60506
Office: 630-844-5539 Fax: 630-844-7830
-----Original Message-----
From: Tesla List [SMTP:tesla-at-pupman-dot-com]
Sent: Sunday, September 27, 1998 9:51 PM
To: tesla-at-pupman-dot-com
Subject: Re: Sparklength inquiry
Original Poster: FutureT-at-aol-dot-com
In a message dated 98-09-25 20:33:57 EDT, you write:
<<
> Power Input JohnF JHCTES
> 680 W 42" 15"
> 2100 W 64" 35"
> 8400 W 128" 97"
> 10 KW 15' 9.3'
> 26 KW 25' 18.3'
> 33.6 KW 21' 23'
> 67 KW 31' 38'
> 109 KW 45' 55'
> 134 KW 42' 64'
> 538 KW 84' 180'
>
> Note that both curves cross at about 33.6 KW with a 21 and 23 ft spark
> length. The streamer sparks are longer below this level and shorter above
> compared to the controlled sparks. The JHCTES data is from the computer
> program and the Fig 2 graph in the TC Design Manual. This graph is based on
> power levels to only 60 KW and has been extended to higher power levels
> without actual test confirmation.
>>
John C,
My guess is that since you took the results of various coils of
various sizes and averaged(?) them, you'd be averaging the good,
the bad, and the ugly. In many cases, small coil = novice coiler,
big coil = experience coiler, thus the big coils will be built better,
work better, be "more efficient". This will skew the results of the
small coils *understating* their true capabilities, and make them
appear *proportionally* wimpy compared to the big brute (properly
built) coils. BTW, that's my *old* power curve above, the new one
shows a little better efficiency. Long sparks seem to need lots o'
power. (crank 'er up 'til she blows!!)
John Freau