[rescue] Anyone Familiar with VMEbus?

[John Hudak]

now that would be retro fun...seriously.....My work projects keep me
seriously overloaded and spousal commitments tend to absorb what little
free time I have.   Retirement not too far over the horizon sooo.....hmmm
would be fun.
Would need a place to sleep if she kicks me out...lol
Please send me a blurb about what you got....


On Fri, Sep 17, 2021 at 4:41 PM Dave McGuire <mcguire at neurotica.com> wrote:

> On 9/17/21 4:15 PM, John Hudak wrote:
> > One doesn't need 'modern hardware' to control that arm.  I was doing it
> wan
> > a DEC LSI11 and later with a 11/73.  There was a Intel 86x box in the lab
> > which could have been used as well.  Most of the code I developed was in
> > assembler, and some C.  Yea, standard approach is to take the small
> voltage
> > outputs of the d/a's and have that as inputs to the servo amps.  My gig
> was
> > applying/developing modern control theory approaches to construct
> observers
> > to refine the time to position and accuracy in 3-space, avoiding the
> > dreaded overshoot problem.   Had to prove to one of my instructors that
> you
> > can't change physics/law of nature with software..the beauty was in the
> > math model...but that is another story.....
>
>    Want to do it again, with another PDP-11?  We have some disused
> robots up here..
>
>               -Dave
>
> --
> Dave McGuire, AK4HZ
> New Kensington, PA
> _______________________________________________
> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue