Re: resonance and controllers

Some poorly written software fails to use the hardware timer and trys to
program the delays between steps with software loops. The problem is that
they don't dis-able interrupts to do the software loops so the timing gets
all whacked out when the processor goes off to refresh the memory or
something.

Joel

----- Original Message -----
From: "Joe Vicars" <jvicars@...>
To: <CAD_CAM_EDM_DRO@onelist.com>
Sent: Friday, February 25, 2000 1:59 PM
Subject: [CAD_CAM_EDM_DRO] resonance and controllers


> From: Joe Vicars <jvicars@...>
>
> I don't understand how the software control contributed to the
> resonance problem that Tim described. The software controller just
> outputs a square wave of varying frequency. If you have control over
> your instantaneous start, accel and decel, then you should be able to
> find an operating range that works. What am I missing?
>
>
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