Study of Sensorless Load Estimation Method for Disturbance Compensation Control of Linear Resonant Actuator

Yasuyoshi ASAI; Masayuki KATO; Katsuhiro HIRATA; Tomohiro OTA

doi:10.14243/jsaem.23.551

Special Issue on the Asia-Pacific Symposium on Applied Electromagnetics and Mechanics (APSAEM2014)

Study of Sensorless Load Estimation Method for Disturbance Compensation Control of Linear Resonant Actuator

Yasuyoshi ASAI, Masayuki KATO, Katsuhiro HIRATA, Tomohiro OTA

Author information

Keywords: Linear resonant actuator, External load estimation, PWM control, Finite element method, Disturbance compensation control

JOURNAL FREE ACCESS

2015 Volume 23 Issue 3 Pages 551-556

DOI https://doi.org/10.14243/jsaem.23.551

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Abstract

　This paper proposes a feedback control method for a Linear Resonant Actuator (LRA), in which an external load can be estimated using two signals of the back-EMF. Using this estimated load, it becomes possible to reduce the decrease in amplitude of LRAs when the external load suddenly increased. The effectiveness of this method was verified through FEM analysis and measurements.

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