4Koren Y. Cross - coupled biaxial computer control for manufac- turing systems [ J ]. ASME Journal of Dynamic Systems Measure- ment and Control, 1980,102 (12) :256 - 272.
5Turl G, Summer M, Asher G. A synchronized multi - motor con- trol system using sensorless induction motor drives [ C ]//Pro- ceedings of International Conference on Power Electronics Ma- chines and Drives. London : London Institution of Electrical Engi- neers,2002:38 - 43.
6Perez - Pinal J, Calderon C, Amujo I. Relative coupling strategy [ C ]//Proceeding of IEEE International Electric Machines and Drives Conference. Madison: IEEE ,2003 : 1 162 - 1 166.