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Amplitude Control Method of Linear Resonant Actuator by Load Estimation From the Back-EMF

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3 Author(s)
Asai, Y. ; Dept. of Adaptive Machine Syst., Osaka Univ., Suita, Japan ; Hirata, K. ; Ota, T.

This paper proposes a feedback control method for a linear resonant actuator (LRA), in which an external load estimated from two signals of the back-EMF is used as a target voltage in PID control. From the estimated load, it becomes possible to obtain an arbitrary amplitude of the mover. The effectiveness of this method was verified through FEM analysis.

Published in:

Magnetics, IEEE Transactions on  (Volume:49 ,  Issue: 5 )

Date of Publication:

May 2013

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