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

ABSTRACT: 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.

SUBMITTER: Kim G

PROVIDER: S-EPMC7181233 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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

Kim Gyunam G Hirata Katsuhiro K

Sensors (Basel, Switzerland) 20200331 7

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 reciprocatin ...[more]

PMID: 32244378

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