Motion Control of a Two-Degree-of-Freedom Linear Resonant Actuator without a Mechanical Spring
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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.
2011 ◽
Vol 11
(1)
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pp. 16
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2002 ◽
Vol 38
(7)
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pp. 624-631
2010 ◽
Vol 36
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pp. 243-252
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2013 ◽
Vol 774-776
◽
pp. 44-47
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