On Mon, 2010-11-08 at 10:30 +0000, Andy Pugh wrote: > On 8 November 2010 01:16, Chris Radek <ch...@timeguy.com> wrote: > > > Jon, I have those same resolvers and I use your resolver converter > > board. I am pretty sure there are two indexes per revolution. The > > gearing is 1:1 so I don't think the original spindle resolver can be > > used this way. > > That sounds like a fairly simple thing to fix with a bit of HAL > though. A flip-flop based frequency divider maybe?
It seems to me, making sure the flip-flop keyed on the same location of the spindle, regardless of powering off or resets, might be a problem. I would consider adding (anding, A & B) a Hall sensor (oil resistant, but may not be fast enough) or opto-interrupter to the spindle shaft to latch onto a single index. Or, I suppose one could home the flip-flop on power-up. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book "Blueprint to a Billion" shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
