On Wed, 2009-04-08 at 21:17 -0500, Jon Elson wrote: ... snip > > This motor ( 86BLF04 ) is catching my eye: > > http://www.wantmotor.com/ProductsView.asp?id=181&pid=81 > > > This is a brushless motor, you need a drive for it. Note that it has no > provision for adding an encoder!
You mean beyond the Hall sensors? For position feedback to EMC2, I usually put an encoder on the axis ballscrew. If they need an incremental encoder, I know someone with a machine shop that could probably put one on... or I mean get it installed. > > maybe with this controller ( BLDC-5015A ): > > http://www.wantmotor.com/ProductsView.asp?id=180&pid=86 > > > This is a variable speed drive, it really looks like it was not intended > for servo use. > It either has a unipolar pot setting or 1 KHz PWM (which I suspect it > filters later, causing unacceptable lags in the servo loop.) I guess the 1kHz PWM is the clue to not being a suitable axis motor driver. > > or Jon's: > > http://pico-systems.com/acservo.html > > > > but might be a bit of over-kill > No, not at all. I can't say without testing with that motor, but it > should work. You stll need to get an encoder into the system, though. > > Jon I'm trying to get pricing. If I get one I could send it to you. I was hoping that this might be a source for DIY CNC priced brushless motors, without resorting to the eBay crap shoot. ---------------- Kirk ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
