Motor Control with DSP builder Adv BlockSet

Ray Andraka's website has excellent references on the Cordic algorithm for FPGA implementation, and opencores.org does have a cordic available.

I have found excellent performance with the inner current/torque loop for a Field Oriented Controller in a fixed point format. For precision servo drives, double precision arithemetic or floating point can get you better performance for the position and or speed loops, particularly in a robotic type application. Notice I said double precision, which could be 16 bit for real and fractional parts, which is different from floating point.

James