Firstly let me make it clear that functional, competent, accurate and reliable Resolver to Quadrature convertors are available from Pico Systems and Mesa Electronics: http://pico-systems.com/resolver.html (I can only find a mention of the Mesa 7i49 on the price list, but I understand it does exist)
Furthermore there are commercial chips to do the conversion too: http://www.analog.com/en/analog-to-digital-converters/synchroresolver-to-digital-converters/ad2s1200/products/product.html For reasons that I am not clear of myself, I eschewed all such approaches, and decided on a DIY approach, using an Arduino board. I have written it up on the Wiki. http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?ResolverToQuadratureConverter It handles 3 resolver channels and has been tested to 1600 rpm (the max speed of my cordless drill). Bench testing indicates that the quadrature pulses should keep up up to 3750rpm. For higher speeds it would be necessary to run fewer resolver channels. -- atp ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
