On 16 November 2010 12:37, Matt Shaver <[email protected]> wrote: >> Does the motor you want to drive have an encoder or hall sensors or >> both? > > Both, for now. For prototyping purposes we are adding an encoder to the > back of a BLDC motor that is usually commutated from built in Hall > sensors. I wasn't going to use the hall sensors, but we certainly could > if there is anything to gain from it.
There are currently two hal components in Master which handle converting encoder feedback to three-phase amplitudes (bldc-sine) and hall signals into the same (bldc-hall). I am in the process of combining them into one combined component according to the scheme here: https://spreadsheets.google.com/ccc?key=0AhjJW1-T6n7CdG5xeE10X1lLa042YmdWX2pvV00ydGc&authkey=CJftoPwJ&hl=en#gid=0 (Comments welcomed). At the moment The bldc-hall component won't drive an 8i20 as it has no phase-angle output. However, I will be having that feature in the new component (and won't that be a can of worms, as the 8i20 adds its own phase-lead) So, at the moment the Hall sensors are no help with an 8i20 system (they can be used with a 7i39) but in the future they can be used full-time on motors with no encoder or just to get initial movement from the motor while aligning the encoder. -- atp ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
