Results 21 to 30 of about 752,171 (204)
Design of Coaxial Integrated Macro–Micro Composite Actuator With Long-Stroke and High-Precision
IEEE Access, 2022 Macro–micro composite-driving structures are widely used in many applications, and research has been done to improve the associated driving stroke and positioning accuracy. This article proposes a novel macro–micro composite actuator (MMCA)
Caofeng Yu +5 more
doaj +1 more source
Opto-Electronic Advances, 2023 Integrating deformable mirrors within the optical train of an adaptive telescope was one of the major innovations in astronomical observation technology, distinguished by its high optical throughput, reduced optical surfaces, and the incorporation of the
Youming Guo +9 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Active vibration control for a Free Piston Stirling Engine generator using a voice coil actuator [PDF]
, 2015 This work presents the study of active vibration control for a FPSE/ LA engine to ensure a reliable engine operation within a broader range of operation frequencies [50 ± 3 Hz] complying with new regulations.
Torres Perez, Angel; id_orcid +6 more
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
Comparison of a Voice Coil and a Hybrid Reluctance Actuator via FEM
, 2018 This paper compares a voice coil and a hybrid reluctance actuator for application in high-precision motion control systems. For accurate evaluation, the finite element method (FEM) is employed to model the non-linear behavior of the two actuators both ...
Cigarini, Francesco +3 more
core +4 more sources