On 5/2/2012 11:45 AM, Kirk Wallace wrote: > On Wed, 2012-05-02 at 10:19 -0500, Jon Elson wrote: > ... snip >> It just seems to me that when the motor inductance causes the winding >> current to lag >> behind the current command from the microstep sine wave, the current control >> logic will automatically become the same as a full-step drive, with no >> special >> function at all required. But, I admit, I have not extracted the >> schematic of >> the drive to figure out if there is anything extra there. >> >> Jon > I suspect the magic is in the Xilinx chip programming, so we'll probably > never know what the magic is. I'd like to play with a couple of Pico PWM > <...>
Thanks to all on the lively conversation. It's obvious I should consider these features when I finally spring for drives with higher current and voltage ceilings after I replace my aging, eBay-special, removed-from-equipment PacSci motors mañana. Through the wonders of Google search I see there have been papers published on the topic of electronic damping. They may well explain the "magic" Kirk refers to, but they don't mean anything to me since I don't access to the inner workings of the drive. Thanks again. Regards, Kent ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
