Results 11 to 20 of about 676 (177)
System modeling and identification of a balance type checkweigher compensated by voice coil actuator
Advances in Mechanical Engineering, 2019 The aim of this article is to investigate the characteristics of checkweigher which consists of two parts: electrical part (voice coil actuator) and mechanical part (lever-pivot mechanism).
Annadurai Vimalesh +3 more
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Design of a Voice Coil Motor Actuator With L-Shape Coils for Optical Zooming Smartphone Cameras
IEEE Access, 2020 This paper proposes a voice coil motor (VCM) with a novel electromagnetic structure for smartphone OZ actuators, and the advantages of this novel design are its long displacement, compact size, and more powerful and stable Lorentz force. These advantages
Chang-Lin Hsieh, Chien-Sheng Liu
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Actuators, 2020 Changing a time-varying magnetic field induces an electromotive force (EMF) in non-magnetic conductive materials, resulting in an eddy current across the conductor. Thus, electromagnetic damping can be used as viscous damping.
Abdullah, Jung-Hwan Ahn, Hwa-Young Kim
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Energies, 2019 The multi-degree-of-freedom high-precision positioning system (MHPS) is one of the key technologies in many advanced industrial applications. In this paper, a novel hyperbolic magnetic field voice coil actuator using a rhombus magnet array (HMF-VCA) for ...
Yiheng Zhou +4 more
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Sixty-Nine-Element Voice Coil Deformable Mirror for Visible Light Communication
Photonics, 2023 To overcome the atmospheric turbulence aberration, and improve the quality of light beam in visible light communication (VLC), a compact 69-element deformable mirror (DM) using micro voice coil actuators was designed based on systematic theoretical ...
Lv Jiang +6 more
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Calculation, simulation and fast estimation of thermal resistance of rotary voice coil actuators
IET Electric Power Applications, 2022 Rotary voice coil actuator (RVCA) is mainly used for reciprocating drive of small inertia loads in a limited range of angle, which is widely used in aerospace and other fields. Thermal resistance is one of the most important parameters of RVCAs, which is
Jianhui Hu +6 more
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Applied Sciences, 2023 The membrane-type air spring can be used to suppress lateral vibration of a vibration isolation table. However, compared to voice coil actuators, pneumatic actuators are difficult to use for precise vibration control, because servo valves have nonlinear ...
Soo-Min Kim, Dae W. Kim, Moon K. Kwak
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Acta Polytechnica CTU Proceedings, 2023 In the contribution, we present a laboratory system capable of X-ray computed tomography (XCT) scanning of an periodically moving or oscillating object.
Václav Rada +7 more
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Modeling and Control of a Dual Stage Actuator Hard Disk Drive
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2010 A data-based approach is presented for modeling and controller design of a dual-stage servo actuator in a hard disk drive. The servo actuator in this hard disk drive consists of a conventional voice coil motor and a piezo-electrically actuated suspension.
Uwe BOETTCHER +2 more
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Vibration control with thin-film-coil actuator for head-positioning system in hard disk drives
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2015 In a head-positioning system of hard disk drives, various mechanical resonances may degrade performance or stability of the control system. In these mechanical resonances, a torsional mode of a head-stack assembly (HSA), in which a resonant frequency is ...
Takenori ATSUMI +3 more
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