Characteristics analysis of a haptic device using a 2-DOF linear oscillatory actuator

Kono, Yoshinori; Yoshimoto, Takamichi; Hirata, Katsuhiro

doi:10.3233/jae-141924

Cited by 13 publications

(9 citation statements)

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“…On the other hand, a multiple-degree-of-freedom (M-DOF) resonant actuator (RA) which extends DOF of LRA has also been studied. This M-DOF RA can be used for applications requiring various motions such as a haptic device (6) (7) . However, since general M-DOF RA can change the effective air-gap, precise motion cannot be realized due to variations in the motor parameters.…”

Section: Introductionmentioning

confidence: 99%

Experimental Verification of a Two-Degree-of-Freedom Resonant Actuator Using Its Detent Force

Kim

Hirata

2021

IEEJ Journal IA

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This study aims to present a new two-degree-of-freedom resonant actuator and its motion control method. Accordingly, the design method for this resonant actuator that resonates using its detent force without mechanical spring is proposed. In this actuator, a centering force is generated according to the moving distance, regardless of the moving direction on the X-Y plane. Using this feature, various resonance motions on the X-Y plane can be realized. This study also proves that the reciprocating motion, elliptical motion, and scroll motion can be controlled. The results of finite element analysis support the characteristics of the proposed actuator, which were compared to the results of measurements on a prototype. Finally, the effectiveness of motion control was validated through the prototype.

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Section: Introductionmentioning

confidence: 99%

Experimental Verification of a Two-Degree-of-Freedom Resonant Actuator Using Its Detent Force

Kim

Hirata

2021

IEEJ Journal IA

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“…Meanwhile, multiple-degree-of-freedom (M-DOF) LRA which extends the DOF of LRA has also been studied. M-DOF LRA can be used for applications requiring various motions such as a haptic device [6][7][8][9]. However, the M-DOF LRA requires several mechanical springs for operation, which increases the size and complexity of the actuator.…”

Section: Introductionmentioning

confidence: 99%

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

Kim

Hirata

2020

Sensors

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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.

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“…We have proposed a 2-DOF oscillatory actuator [11,12] and succeeded in creating an acceleration waveform that is similar to the one generated by the slider-crank mechanism. However, it was then realized that the slidercrank waveform is unique and specific to the mechanical structure of the slider-crank mechanism.…”

Section: Introductionmentioning

confidence: 99%

Power-Saving Method of Linear Oscillatory Actuator for Mobile Haptic Device Using Mechanical Resonance

Kato

Kono

Yasukawa

et al. 2019

Journal of the Japan Society of Applied Electromagnetics and Me

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Mobile haptic devices that employ vibration have been studied extensively because they have great potential for use as information transfer devices. Some studies have reported a method for haptic feedback using asymmetric oscillation made by slider-crank mechanism. Authors have proposed a small two-degree-of-freedom (2-DOF) oscillatory actuator for a mobile haptic device. However, the continuous operating time was estimated to be only few hours because its power consumption is large. To solve this problem, this paper proposes a power-saving method of the 2-DOF oscillatory actuator using mechanical resonance. As a result, the proposed method improved by more than 99% in the power consumption.

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Characteristics analysis of a haptic device using a 2-DOF linear oscillatory actuator

Cited by 13 publications

References 0 publications

Experimental Verification of a Two-Degree-of-Freedom Resonant Actuator Using Its Detent Force

Experimental Verification of a Two-Degree-of-Freedom Resonant Actuator Using Its Detent Force

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

Power-Saving Method of Linear Oscillatory Actuator for Mobile Haptic Device Using Mechanical Resonance

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