M. Schrödl, M. Lambeck:
"Statistic properties of the INFORM method for highly dynamic sensorless control of PM motors down to standstill";
Talk: IECON2003 29th Annual Conference of the IEEE Industrial Electronics Society, Roanoke, Virginia, USA (invited); 11-02-2003 - 11-06-2003; in: "The 29th Annual Conference of the IEEE Indistrail Electronics Society", (2003), ISBN: 0-7803-7907-1; 8 pages.

In the presented paper, the statistical properties of
IFORM-based position estimation are calculated, influences on
the accuracy of the methods are explained. Measurement results
verify the theoretical expectations. An industrial example shows
the practical implementation in a transiently operated application
in position control mode.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04404069