Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring

This study aims to present a new two-degree-of-freedom (DOF) linear resonant actuator (LRA) and its motion control method without a position sensor. The design method of 2-DOF LRA which resonates with only detent force without a mechanical spring is proposed. Since the information of displacement an...

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Main Authors:	Gyunam Kim, Katsuhiro Hirata
Format:	Article
Language:	English
Published:	MDPI AG 2020-03-01
Series:	Sensors
Subjects:	two-degree-of-freedom linear resonant actuator detent spring-less sensor-less motion control
Online Access:	https://www.mdpi.com/1424-8220/20/7/1954

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record_format	Article
spelling	doaj-1ec36028c4f8445393ca435408dec19a2020-11-25T03:49:28ZengMDPI AGSensors1424-82202020-03-01201954195410.3390/s20071954Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical SpringGyunam Kim0Katsuhiro Hirata1Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, JapanDepartment of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, JapanThis study aims to present a new two-degree-of-freedom (DOF) linear resonant actuator (LRA) and its motion control method without a position sensor. The design method of 2-DOF LRA which resonates with only detent force without a mechanical spring is proposed. Since the information of displacement and direction is required to control 2-DOF LRA, a sensor or an estimator is needed. Therefore, we proposed a position estimator and a motion controller for 2-DOF LRA. This paper proved that reciprocating motion, elliptical motion, and scrolling motion can be controlled without a position sensor. Finite element analysis (FEA) and dynamic simulation results validated the proposed method as well.https://www.mdpi.com/1424-8220/20/7/1954two-degree-of-freedomlinear resonant actuatordetentspring-lesssensor-lessmotion control
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Gyunam Kim Katsuhiro Hirata
spellingShingle	Gyunam Kim Katsuhiro Hirata Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring Sensors two-degree-of-freedom linear resonant actuator detent spring-less sensor-less motion control
author_facet	Gyunam Kim Katsuhiro Hirata
author_sort	Gyunam Kim
title	Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring
title_short	Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring
title_full	Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring
title_fullStr	Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring
title_full_unstemmed	Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring
title_sort	motion control of a two-degree-of-freedom linear resonant actuator without a mechanical spring
publisher	MDPI AG
series	Sensors
issn	1424-8220
publishDate	2020-03-01
description	This study aims to present a new two-degree-of-freedom (DOF) linear resonant actuator (LRA) and its motion control method without a position sensor. The design method of 2-DOF LRA which resonates with only detent force without a mechanical spring is proposed. Since the information of displacement and direction is required to control 2-DOF LRA, a sensor or an estimator is needed. Therefore, we proposed a position estimator and a motion controller for 2-DOF LRA. This paper proved that reciprocating motion, elliptical motion, and scrolling motion can be controlled without a position sensor. Finite element analysis (FEA) and dynamic simulation results validated the proposed method as well.
topic	two-degree-of-freedom linear resonant actuator detent spring-less sensor-less motion control
url	https://www.mdpi.com/1424-8220/20/7/1954
work_keys_str_mv	AT gyunamkim motioncontrolofatwodegreeoffreedomlinearresonantactuatorwithoutamechanicalspring AT katsuhirohirata motioncontrolofatwodegreeoffreedomlinearresonantactuatorwithoutamechanicalspring
_version_	1724495387488681984

Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring

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