[mmaimcal]Re: [Almasci] Antenna Acceleration

Mark Holdaway mholdawa at nrao.edu
Sat Nov 15 00:35:36 EST 2003


> Dear Mark,
> 
> Thank you for your nice work.
> Your result would be a good news to Antenna people.
> 
> I have one question to you.

I don't know anything about the ACU,
but the ACU will probably need to know details of
the chosen motion profiles -- 48 msec is too coarse
a time interval to give the detailed instructions.

   -M

> Interface specification from the control software to
> the antenna control unit (ACU) is that a axis drive
> information (start-position and velocity) is sent
> every 48 msec. But your acceleration profile is longer
> than 48 msec.  So, in your simulation ACU knows
> the current observing mode is OTF.  Am I correct?
> 
> Cheers,
> Koh-Ichiro
> 
> 




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