PID feedback control method for Linear Resonant Actuator using an estimated external load from the back-EMF as a target voltage

Author

Asai, Y. ; Hirata, K. ; Ota, T.

Author_Institution

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

fYear

2012

fDate

20-22 June 2012

Firstpage

1547

Lastpage

1551

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. The effectiveness of this method was verified through the FEM analysis in which the magnetic field equation is coupled with electric circuit equation, control method, and motion equation. As a result, it was found to be possible to maintain arbitrary amplitude responded to the estimated load.

Keywords

electric actuators; electric potential; feedback; finite element analysis; three-term control; voltage control; FEM analysis; LRA; PID feedback control method; back-EMF; electric circuit equation; estimated external load; linear resonant actuator; magnetic field equation; motion equation; target voltage; Actuators; Coils; Equations; Estimation; Feedback control; Finite element methods; Pulse width modulation; Dynamic analysis; External load estimation; Finite element method; Linear resonant actuator; PID control; PWM control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on

Conference_Location

Sorrento

Print_ISBN

978-1-4673-1299-8

Type

conf

DOI

10.1109/SPEEDAM.2012.6264437

Filename

6264437