4ABBONDANTI A.BRENNEN M B.Variable speed Induction Motor Drives Use Electronic Slip Calculator Bared On Motor Voltages and Currents[J].IEEE Transaction on Industry Application,1975,IA-11(5):483-488.
5LORENZ R D,LIPO T A,NOVOTNY D W.Motion Control with Induction Motor[J].Proc.IEEE,1994,82(8):1215-1239.
