in the summer of 2006, having bought those cheap Sanyo motors that surpluscenter was selling then, I thought I had time to complete something like this. And I did get as far as actually rotating the motor with control by emc2/mesa5i20 card http://www.anderswallin.net/2006/06/first-steps-with-brushless-servodrive-microchip-dspic-irf-irams/
I chose a then novel dsPIC because it had hardware PWM-generation and an encoder counter. I chose the IRF IRAMS power-stage because it seemed to be the simplest way of doing things. I didn't plan on a current-loop, but there were current-sense resistors on the powerstage for overload protection. I'd agree mostly with what was posted earlier: the challenge is on the analog side of things, particularly current-sensing and overload protection etc. when dealing with high voltages and currents (your average EE101 class does not teach this...) Anders ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
