Daniel, Some of the machines I was looking at purchasing a couple years back for a project ran about 2000 IPM rapid feed. While I do not know how fast it would cut a circle I thought it was in the 1200IPM range IIRC. Oh, BTW, that system used servo motors.
Regarding the max parameters... I agree, but would add that I want to find natural bases for these choices (say 16-bits for the encodes and 24-bits for the step counts). If we can actually hit 50KHz, then I think that would already get me above 1000 IPM. I think the most reasonable way to proceed is to throw together a rapid prototype and see how fast we can expect various parts of the code to spin and then we can start talking real numbers. I like the ARM7/9 processors, but we might also want to talk about AVR. I'll have to look at my notes, but if I recall correctly ARM is rather stingy with their documentation while AVR documentation is much better. This is an important long-term support and development issue. Either way, I agree going with inexpensive base hardware. EBo -- ps: could not sleep, so I'm working on a paper. I'll email more later. Daniel Lee <[email protected]> said: > I agree that the design of the protocols and software needs to accomadate > 2,000,000 steps /sec > 64000 counts per rev on the encoders is also needed with the 2Meg cnts/sec > > These max paramitors will determin our number systems. > > I have a laser cutting table that will support 2,000,000steps/sec with > 1micometer resolution that can be used to test > this limit of a controler but this requires very expensive hardware control > system. > 1000inch/minute jog is normal but controled circular interpulation at this > rate is not. so we need max cutting speeds > seperate from max jog rates. > > Open sound control we can look at. > > I want to keep the first hardware low cost so anyone can use it but it does > need to be usable. > So lets see if we can hit above 50,000 steps/sec. I will have to see what > is posible. With a low cost board > > > > > Daniel > > > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA > -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise > -Strategies to boost innovation and cut costs with open source participation > -Receive a $600 discount off the registration fee with the source code: SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > -- ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
