Many thanks for the link, Attila.
One of the authors of Volume 25 was Nichols of Ziegler-Nichols tuning
fame (q.v.)
Bill Hawkins
-Original Message-
From: Attila Kinali
Sent: Monday, February 09, 2015 4:14 AM
And here the link to the pdf's in case anyone is looking:
On Fri, 06 Feb 2015 21:20:39 +
Poul-Henning Kamp p...@phk.freebsd.dk wrote:
If anyone wants to dive into control theory I recommend reading the
book Feedback control of dynamic systems by Franklin, Powell and
Emami-Naeini.
And if you are more of a historical bent, the MIT Radiation Lab
In message 20150206153214.4d5f42edbdda4639fee1a...@kinali.ch, Attila Kinali w
rites:
On Mon, 26 Jan 2015 20:15:12 +
Poul-Henning Kamp p...@phk.freebsd.dk wrote:
The basic math of PID has been around for about 100 years. The invention
of the servo (and synchro/resolver) is what
On Mon, 26 Jan 2015 20:15:12 +
Poul-Henning Kamp p...@phk.freebsd.dk wrote:
The basic math of PID has been around for about 100 years. The invention
of the servo (and synchro/resolver) is what makes its day...
If anyone wants to dive into control theory I recommend reading the
book
On 1/25/15 1:30 PM, WarrenS via time-nuts wrote:
I second Poul-Henning Kamp's comments concerning D-terms,
(mostly) as done in the TBolt and likely other GPSDOs.
Bear in mind that a PID loop is basically a fairly simple control loop
that is easily susceptible to linear analysis.
They're
Maybe we are getting a little off-topic here, but a very long time ago I
was dealing with industrial ovens used to braze ceramics used to make
microwave tubes.
It was very difficult to maintain the precise temperature ramp up and down,
particularly as the oven was not always loaded the same way.
On 1/26/15 5:55 AM, Poul-Henning Kamp wrote:
In message 54c5a270.7090...@earthlink.net, Jim Lux writes:
And there's decades, if not centuries, of experience with P, PI and PID
controllers in a practical sense.
Not quite a century I belive: Only the advent of electronics formalized
In message 5E5E892CF8A2440FBF18FFAD000B65FD@NewComputer, Lee Mushel writes:
I'm fairly sure that Jim is right. I never had to worry about PID machine
control before the late sixties and by the mid-seventies the concepts were
firmly in place and in use.
The basic math of PID has been
In message CAMQqFumOdB4gcFfQjQ_nced0C_U=fbmyofwl7vuxm8wotqg...@mail.gmail.com
, Didier Juges writes:
In order to automatically compensate for different oven loading (and
ambient conditions), the controller injected a very low level random
noise over the temperature setting and by
Sent: Monday, January 26, 2015 8:21 AM
Subject: Re: [time-nuts] D term (was no subject)
On 1/26/15 5:55 AM, Poul-Henning Kamp wrote:
In message 54c5a270.7090...@earthlink.net, Jim Lux writes:
And there's decades, if not centuries, of experience with P, PI and PID
controllers
I second Poul-Henning Kamp's comments concerning D-terms,
(mostly) as done in the TBolt and likely other GPSDOs.
A 'D-term' helps fast loops like a TPLL where you
want a high bandwidth with the P gain as high as possible.
For slow noisy loops like a cleanup osc or a GPSDO,
what helps is a
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