Hal on IT

940207.1014 Hal PEPINSKY@IUBACS to Bill P. and others on IT.

Rather than trying to unravel error functions wouldn't it be simpler
to compare search strategies--as in sequences of choices, and
foundations of choices, of successive reference signals, simply to
compare whether disturbance error became greater or lesser from signal
to signal? l&p hal

<Bill Leach 07 Feb 1994 20:26:24

LIST

(Hal, I'm sorta "hanging" this one on yours if'n ya don't mind. Though a
bit different than what you are asking about, I think it is related).

Does PCT view changes in level for control to be a significant act? By
that I guess I am asking how or if PCT is able to qualitatively deal with
the following different scenerios:

1. Control "suddenly" requires a much larger control action but
    maintains control.

Is this always something that takes place within a single control loop?
Or is it likely something that "wakes up" addition control loops?

2. Control loop suddenly looses control.

In this case I don't have any problem suggesting that another control
loop has to become actively involved. It is still possible that no
"cognetive" control loop is required however, yes?

ยทยทยท

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We have discussed error some. Error as in RMS or Peak errors in
experiments. I am somewhat curious about how PCT view what most
"controller people" call "deadband"?

-bill