Re: digital servo controller to offload the Parallel Port?

["Frank Monahan" <cmona-at-garlic.com>]

----- Original Message -----
From: "Alex Kovacic" <A.Kovacic-at-unsw.edu.au>
To: "Multiple recipients of list" <emc-at-nist.gov>
Sent: Wednesday, December 18, 2002 3:03 PM
Subject: Re: digital servo controller to offload the Parallel Port?


>
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> >
> >>  BRAIN BOARD.. is the electronic hardware used to
> >>  coordinate the actions of THE MOTOR CONTROL BOARD
> >> (that is 6 motor contro boards and each board will
> >>  controls three dc motors). This board will contain
> >> the DSP and the required peripherals and will serve
> >> as the central power distribution core.
> >
> >18 motors?  Something tells me you aren't running a
> >machine tool <grin>.  Maybe a 6 legged robot, with
> >3 DOF per leg?
>
>
> NO A PUMA ROBOT..AND A SMALL xyz table..
>
>
>  I have a project like that in mind
> >too, but I'm planning to use a PC for high level
> >control, and PICs or other small micros for the low
> >level motor control, either one per motor or one per
> >leg.
>
>
>
> The TMS320LF2407 (or TMS320LF2406)DSP from Texas Instruments has been
> chosen to perform the motor control and low-level processing duties.  This
> DSP features high-speed processing, a built-in communication protocol, two
> ADC converters, and quadrature capture pins for positional feedback from
> the motors.
>
> and only one is needed for three motors... also free samples from Texas
> Instruments.
>
> you would need two pics per motor to do it properly..?????????
> >
> >John Kasunich
> >
>
> Alex Kovacic
> FISH Lab
> CYTOGENETICS UNIT,
> SEALS,Level 4, Campus Centre,
> Prince Of Wales Hospital,
> RANDWICK, NSW, 2031,
> AUSTRALIA,
> Tel: (61) (02) 9382 9168
> Fax: (61) (02) 9382 9157
> email1:A.Kovacic-at-unsw.edu.au
> email2:kovacica-at-sesahs.nsw.gov.au
>
    This all sounds good BUT ! What are you goining to use for a PID Filter?
  Be carefull. build something that you don't have to reprogram every tim
you
  need to change motors or feedback settings..Man I know, Frank M.