Title :
Area efficient and accurate CORDIC processor for motor control drive
Author :
Kebbati, H.S. ; Blonde, J. Ph ; Braun, F.
Author_Institution :
LEPSI, Univ. Louis Pasteur, Strasbourg, France
Abstract :
The CORDIC algorithm can compute linear, trigonometric and hyperbolic functions. Mathematical identities also allow computation of other functions. Our primary aim is applications in motor control drive, such as concordia/park transform, pulse width modulation (PWM)... In this paper, we present an implementation of a fixed-point processor based on CORDIC algorithm. Large numerical errors due to such systems are eliminated by including additional hardware. We estimate the performances of our CORDIC scheme and compare it with previously proposed scheme and show that it provides a significant saving in area.
Keywords :
digital signal processing chips; electric machine analysis computing; fixed point arithmetic; machine vector control; motor drives; pulse width modulation; VLSI chip; accurate CORDIC processor; area efficient CORDIC processor; fixed-point processor; hyperbolic functions; iterative architecture; linear functions; motor control drive; pulse width modulation; rotational mode; trigonometric functions; unified CORDIC; vectoring mode; Arithmetic; Computer architecture; Computer errors; Delay; Hardware; Iterative algorithms; Motor drives; Pulse width modulation; Signal processing algorithms; Space vector pulse width modulation;
Conference_Titel :
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
Print_ISBN :
0-7803-8163-7
DOI :
10.1109/ICECS.2003.1302014
