Title :
Amplitude Control Method of Linear Resonant Actuator by Load Estimation From the Back-EMF
Author :
Asai, Yusuke ; Hirata, Kazufumi ; Ota, Takahisa
Author_Institution :
Dept. of Adaptive Machine Syst., Osaka Univ., Suita, Japan
Abstract :
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.
Keywords :
actuators; electric potential; finite element analysis; pulse width modulation; three-term control; FEM analysis; PID control; amplitude control method; back-EMF signals; external load; feedback control method; linear resonant actuator; load estimation; mover arbitrary amplitude; target voltage; External load estimation; PWM control; finite element method; linear resonant actuator;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2243419
