Sensor Less Load Estimation and Disturbance Compensation Control Using Two Back-EMF Signals and Duty Ratio for Linear Resonant Actuator

Masayuki KATO; Katsuhiro HIRATA; Yasuyoshi ASAI

doi:10.14243/jsaem.25.192

Journal of the Japan Society of Applied Electromagnetics and Mechanics

Online ISSN : 2187-9257
Print ISSN : 0919-4452
ISSN-L : 0919-4452

Special Issue on The 25^th MAGDA Conference in Kiryu (MAGDA2016)

Sensor Less Load Estimation and Disturbance Compensation Control Using Two Back-EMF Signals and Duty Ratio for Linear Resonant Actuator

Masayuki KATO, Katsuhiro HIRATA, Yasuyoshi ASAI

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Keywords: linear resonant actuator, sensor less load estimation, the law of energy conservation, finite element analysis

JOURNAL FREE ACCESS

2017 Volume 25 Issue 2 Pages 192-197

DOI https://doi.org/10.14243/jsaem.25.192

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Abstract

Amplitude of linear resonant actuators severely decrease when external loads are applied. Therefore, load feedback is essential. Authors have proposed a load estimation method using two back-EMF signals under free damped oscillation. This paper presents a new estimation method based on the law of energy conservation under forced oscillation. Additionally, a disturbance compensation control is proposed using estimated load. These methods are verified through finite element analysis.

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