M. Schrödl:
"Sensorless Control of Permanent Magnet Synchronous Machines An Overview";
Talk: International Conference on Power Electronics and Motion Control, EPE-PEMC, Riga, Latvia; 09-02-2004 - 09-04-2004; in: "11th International Power Electronics and Motion Control Conference", (2004), ISBN: 9984-32-010-3; Paper ID A51685, 6 pages.

Sensorless control of PMSMs has got considerable importance in drive research. After a short introduction about the operating modes of the PMSM, the paper gives an overview about the different approaches of sensorless position detection. Low speed and high speed models are explained. A special focus is given to methods with active signal excitation (signal injection, INFORM method).

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04967620