Title :
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
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;
Conference_Titel :
Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
978-1-4673-1299-8
DOI :
10.1109/SPEEDAM.2012.6264437
