1
General Mach Discussion / Re: Digital scales as input?
« on: October 18, 2006, 02:38:20 PM »Quote
Are you doing this in an attempt to get mach to close the pid loop for positioning? If so then sorry will not work, mach spends most of it's time worrying about a steady pulse train out to the motors. It doesn't have enough time to do high speed pid loops.Yes, this was my intention.
Quote
The other problem with using encoders on the axis and not the motor/servo is if there is ANY backlash in the mechanical then a pid driver will cause the motor to constantly hunt and eventually burn it out.Some algorythms can handle this, if they don't insists on getting exactly that position.
Quote
If you just want to use these as a dro for manual machining then a plug in probably could be written just to display position but it probably would be easier just to write your own little dro app.OK. That app already exists. I just thought the interface could be used for loopback too.
Thanks,
Nick