3-D finite element analysis of dynamic characteristics of spherical resonant actuator

Suzuki, Satoshi; Kawase, Yoshihiro; Yamaguchi, Tadashi; Shibayama, Yuki; Hirata, Katsuhiro; Ota, Terukazu

doi:10.1109/icelmach.2010.5608213

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Linear resonant actuators (LRAs) [1][2][3][4][5] have been used in a wide range of applications because they can reciprocate in a comparatively short stroke in spite of their compact size and lightweight. In order to broaden the application range of LRAs, various kinds of multi-degree of freedom (DOF) resonant actuators have been developed [6,7]. Authors have also proposed a two degree-of-freedom resonant actuator that was able to be independently driven in x-and z-axes by vector control [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Control of three-degree-of-freedom resonant actuator driven by novel vector control

Kato

Hirata

2018

Transportation Systems and Technology

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This paper presents a novel vector control method for three-degree-of-freedom resonant actuator in order to improve its controllability. The effectiveness of the presented method is verified through electromagnetic field analysis using 3-D finite element method: Issue: A three-degree-of-freedom resonant actuator has a great potential to broaden the application range of linear oscillatory actuators because it has a lot of advantages: high efficiency, simple structure, etc. However, this actuator has low controllability because the magnetic structure of each axis is not independent. Aim: To establish a novel vector control technique suitable for our actuator. Materials and methods of the studies: Electromagnetic analysis employing 3-D finite element method. Results: In this study, the novel vector control theory was constructed on the basis of four-phase system. The new dq model was achieved by considering 3-D coordinate transformation. The proposed method is able to decrease the influence of thrust interference from other axis and achieved higher controllability. Conclusion: The results of the study will contribute to a practical use of the three-DOF resonant actuator.

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Section: Introductionmentioning

confidence: 99%

Control of three-degree-of-freedom resonant actuator driven by novel vector control

Kato

Hirata

2018

Transportation Systems and Technology

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“…Especially, linear resonant actuators (LRAs) which utilize mechanical resonance can reciprocate at high efficiency and have been used as home electronics, such as an electric shaver and an electric toothbrush. To broaden the application range of LRAs, various kinds of multi-degree of freedom (DOF) resonant actuators have been developed (Suzuki et al, 2010;Yamaguchi et al, 2009). Authors have also proposed a two-DOF resonant actuators that was able to be independently driven in x-and z-axes by vector control (Yoshimoto et al, 2012(Yoshimoto et al, , 2014(Yoshimoto et al, , 2015, and the effectiveness of the actuator was confirmed through three-dimensional (3D) finite element analysis (FEA) and measurement on a prototype.…”

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confidence: 99%

Dynamic characteristics of three-degree-of-freedom resonant actuator

Kato

Hirata

Fujita

2018

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Purpose Linear oscillatory actuators have been used in a wide range of applications because they have a lot of advantages. Additionally, multi-degree of freedom resonant actuators have been developed. The purpose of this paper is to propose a novel three-degree-of-freedom resonant actuator resonant actuator that is driven in three directions. The dynamic characteristics are clarified through finite element analysis and measurement. Design/methodology/approach A novel three-degree-of-freedom resonant actuator resonant actuator consists of a cross-shaped mover, a stator and five excitation coils. The magnetic structure of this actuator is geometrically similar to that of general permanent magnet synchronous motor. Therefore, vector control is applied to this actuator. The dynamic characteristics are analyzed and measured. Findings Computed results show that the proposed actuator is able to be independently driven in three directions. However, measured result show that mutual interference is severely observed because of the structure of the mover support mechanism. Therefore, the structure needs to be improved. Originality/value The proposed actuator has originality in its structure and operating principle.

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3-D finite element analysis of dynamic characteristics of spherical resonant actuator

Cited by 2 publications

References 6 publications

Control of three-degree-of-freedom resonant actuator driven by novel vector control

Control of three-degree-of-freedom resonant actuator driven by novel vector control

Dynamic characteristics of three-degree-of-freedom resonant actuator

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