Sounds like this could be a major move forward. I'm not wed to the full quadrature concept.
This sounds like it is almost an absolute encoder? Or close? I've got to get back to working on an SSI absolute encoder interface now that I am back home. Julian was working on a SSI interface on the support forum using a Mesa 5i25 board, but it doesn't show that it was completed. I spent two weeks in Mexico and one in China starting up some machine cells for an Automotive OEM. It was not a vacation as we worked a lot of hours with no days off. But the weather was really nice. Neither the China or the Mexico plants had a heating or cooling system as the weather is very mild in both locations. Cold is 50 degrees F and hot is 80 degrees F. I could get used to that! :-) Now I find it is a little difficult dealing with 34F/1C and 30 mph winds in Indiana, USA, after enjoying the nice weather in Mexico and China! Dave On 11/23/2012 10:51 AM, andy pugh wrote: > On 23 November 2012 14:26, Gene Heskett<ghesk...@wdtv.com> wrote: > > >>> The target wheels we have on our engines are _not_ ferrous. They are a >>> magnetic track and the crank sensor has no internal magnet. >>> (I can't find that actual sensor on the Allegro site). >>> >> For a hall sensor to work, there must be a magnetic field for it to sense. >> > Yes, there is a ring of non-ferrous magnetic plastic stuff (like very > thick cassette tape) round the periphery. > Basically just like this stuff: > http://www.machine-dro.co.uk/high-accuracy-magnetic-linear-tape.html > But applied to the disc prior to the the pattern being applied. > > >> Not all steels are magnetic though >> > Yes, I know. I have a PhD in ferrous metallurgy. > > I've lost interest. Everyone with an opinon seems to think this is a > bad idea. I have no need for it, so I won't bother. > > ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
