Sensorless position estimation of linear voice-coil transducers

In this paper, a method for sensorless position estimation of linear transducers at standstill is suggested. The method makes use of current pulses, which is a common sensorless starting technique for 3-phase synchronous motors. Most transducers possess however only one phase. In order to find a unique solution, the proposed method differs in some important aspects from the methods used in 3-phase systems. A general discussion of different inductance phenomena is presented. A combination of these phenomena makes it possible to find a unique position. The proposed method is verified using a linear voice-coil transducer with permanent magnets, which is taken from a hard-disk drive. The experimental results are presented and discussed.

Published in:
IAS Annual Meeting (IEEE Industry Applications Society), 1, 70-74
Electromechanical Laboratory, Swiss Federal Institute of Technol., EPFL, 1015 Lausanne, Switzerland
Cited By: 1; Export Date: 15 May 2006; Source: Scopus

 Record created 2006-06-15, last modified 2020-10-28

Rate this document:

Rate this document:
(Not yet reviewed)