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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.

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