Conference paper

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.


    Electromechanical Laboratory, Swiss Federal Institute of Technol., EPFL, 1015 Lausanne, Switzerland

    Cited By: 1; Export Date: 15 May 2006; Source: Scopus


    Record created on 2006-06-15, modified on 2017-05-10


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