Experimental validation of load estimation method from the back-EMF for amplitude control method of linear resonant actuator

Author

Asai, Yusuke ; Hirata, Kazufumi ; Ota, Takahisa

Author_Institution

Dept. of Adaptive Machine Syst., Osaka Univ., Suita, Japan

fYear

2013

fDate

4-7 Aug. 2013

Firstpage

444

Lastpage

449

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 the 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 and measurement.

Keywords

amplitude modulation; electric actuators; electromagnetic fields; feedback; finite element analysis; pulse width modulation; three-term control; voltage control; FEM analysis; LRA; PID control; PWM feedback control method; amplitude control method; back-EMF signals; experimental validation; external load estimation; linear resonant actuator; load estimation method; mover amplitude; target voltage; Actuators; Coils; Equations; Estimation; Feedback control; Mathematical model; Pulse width modulation; External load estimation; Finite element method; Linear resonant actuator; PWM control;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation (ICMA), 2013 IEEE International Conference on

Conference_Location

Takamatsu

Print_ISBN

978-1-4673-5557-5

Type

conf

DOI

10.1109/ICMA.2013.6617959

Filename

6617959