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Subject: Re: Historical question: negative feedback and the op amp
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
Date: Thu, 14 Nov 2002 17:39:21 -0800
NNTP-Posting-Date: Thu, 14 Nov 2002 17:36:09 MET
Organization: @Home Network
"Spehro Pefhany" wrote in message
> On Thu, 14 Nov 2002 15:06:36 -0000, the renowned "John Jardine"
> >I was told by an ex WW11 'operations analysis' mathematician that most
> >modern control theory was developed by the Russians during WW11.
> >What I never found out, was why?. What was driving them?.
> Modern control theory (as opposed to the older classical type) is
> well suited to aerospace and weapons system controls (the kinematics
> and thus the underlying model of the systems are well understood and
> predictable). They would not have had much computational power
> available at that time, but given various mechanical and other methods
> of doing controls, it may have seemed like a fruitful avenue to
> explore, especially for those with tenure. This was very early days
> for controls, but control theory always seems to be well ahead of
I was watching the discovery channel a few weeks ago with a programme about
the V1 & V2 rockets. The latter had electric/electronic controlled servo
steering flaps. Remarkable for that time.
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