Re: Antonym of 'Executive Controller'
- From: "Herman Family" <ecalptsudwaseht.in.reverse@xxxxxxxxxxxxxxx>
- Date: Sat, 06 May 2006 03:49:17 GMT
Gee, Tim, this one is a little tough. I suppose you could call the lower
level stuff a "device", with the idea that a device performs an action,
while a regulator or controller controlls the device, and a supervisor
controls the regulator.
On the humorous side, the opposite of "executive control" could be
"functional control". Hmm. That looks like it works on a couple levels...
Michael
"Tim Wescott" <tim@xxxxxxxxxxxxxxxx> wrote in message
news:HOudnd3QZ7X8fcfZnZ2dneKdnZydnZ2d@xxxxxxxxxxxxxxx
Yes, but in a servo system it's not 'regulatory' control, it's, well, a
servo. So I guess I need something that means 'servo and/or regulator'
but sounds nicer...
Herman Family wrote:
You wouldn't be referring to supervisory control and regulatory control,
are you?
Michael
"Tim Wescott" <tim@xxxxxxxxxxxxxxxx> wrote in message
news:d6Wdnfd-hfKg8sfZRVn-og@xxxxxxxxxxxxxxx
Most control systems that I know of involve some sort of executive
controller that's responsible for taking some user's desired result and
turning it into commands for other things, and the 'real' controllers
that actually make the loops work.
Some examples of this are:
A flush toilet, where the 'executive controller' is the flush handle, and
the ball valve and float valve are the two 'real' control systems that
handle sequencing the flush and making sure that the tank fills for the
next go round.
The IR imaging systems I used to work on, where the executive controller
is the system control box that's responsible for managing system modes,
and transmitting user commands like 'increment field of view' or 'slew to
this here position' to the appropriate subsystem. The 'real' controllers
in this case are the actual motion control loops that make the lenses
move, or causes the turret to slave to a different location.
So is there a recognized name for the 'real' controller? I always just
call it the 'controller', and if I need to talk about it at all I call
the other thing the 'executive controller'. But I'm giving a
presentation in a few weeks to a bunch of people who aren't control
systems folks, and if I use 'controller' and 'executive controller'
they'll be confused.
Of course I've seen the terms 'motion controller' and 'process
controller', but those are just 'real' or 'non-executive' controllers --
they don't give me a general term to use.
I'm thinking 'dynamic controller'.
Any opinions?
Thanks.
--
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Posting from Google? See http://cfaj.freeshell.org/google/
"Applied Control Theory for Embedded Systems" came out in April.
See details at http://www.wescottdesign.com/actfes/actfes.html
--
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Posting from Google? See http://cfaj.freeshell.org/google/
"Applied Control Theory for Embedded Systems" came out in April.
See details at http://www.wescottdesign.com/actfes/actfes.html
.
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