Title :
A 16/24-bit DSP-ASIC coprocessor for AC motor modelling
Author :
Ovaska, S.J. ; Vainio, O. ; Pasanen, J.
Author_Institution :
KONE Elevators, Hyvinkaa, Finland
Abstract :
A discrete-time computational AC motor model is derived and analyzed for the purpose of advanced motor control. The starting point is a continuous-time model defined by a pair of simultaneous complex-coefficient differential equations. The discrete-time model is derived using the forward-difference (FD) approximation. The exact dependence between stability and the minimum sampling rate in the FD approach is shown. An efficient implementation architecture is given, based on DSP techniques. A 16/24-bit DSP-ASIC coprocessor prototype implementing the AC motor model is introduced.<>
Keywords :
AC motors; application specific integrated circuits; control system analysis computing; digital signal processing chips; machine control; 16 bits; 24 bits; AC motor modelling; DSP-ASIC coprocessor prototype; advanced motor control; continuous-time model; discrete-time computational AC motor model; forward-difference approximation; implementation architecture; minimum sampling rate; simultaneous complex-coefficient differential equations; stability; AC motors; Computational modeling; Coprocessors; Digital signal processing; Equations; Integrated circuit modeling; Prototypes; Rotors; Stators; Voltage;
Conference_Titel :
Euro ASIC '91
Conference_Location :
Paris, France
Print_ISBN :
0-8186-2185-0
DOI :
10.1109/EUASIC.1991.212894
