Results 31 to 40 of about 658,400 (290)

Ultra-fast moving coil actuator for power switches in medium-voltage grids

open access: yesThe Journal of Engineering, 2019
The need for faster power switches leads to the following question: Which technical actuation principle has the highest acceleration potential? This study describes the investigation of electrodynamic moving coil (voice coil) actuators.
Tom Stroehla   +5 more
doaj   +1 more source

Development of a Novel Dual Servo Magnetic Levitation Stage

open access: yesActuators, 2022
The main objective of this paper is to propose, design, and control a novel dual servo magnetic levitation stage which is precise and vacuum compatible.
Dahoon Ahn   +3 more
doaj   +1 more source

Evaluation of Digital Technologies for Home‐Based Assessment in People With Amyotrophic Lateral Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Digital technologies hold promise for transforming healthcare by enhancing personalized treatments and offer valuable opportunities to improve patient care. Here, we evaluated several novel, self‐administered, home‐based, digital endpoints for their association with corresponding conventional standard clinical measures (primary) in ...
Arne Mueller   +14 more
wiley   +1 more source

The Research of Technologies of High Precision & Long Life Space Tracking Mechanism

open access: yesMATEC Web of Conferences, 2017
In the field of space remote sensing technology, this paper researches on the technologies of high precision and long life tracking mechanism. The especial requirements in space for tracking mechanism are presented firstly, and the technologies are ...
Cao Qian, Li Ming, Xu Pengmei
doaj   +1 more source

High-resolution visible imaging with piezoelectric deformable secondary mirror: experimental results at the 1.8-m adaptive telescope

open access: yesOpto-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

Voice Coil Actuators For Percussion Robotics

open access: yes, 2017
Percussion robots have successfully used a variety of actuator technologies to activate a wide array of striking mechanisms. Popular types of actuators include solenoids and DC motors. However, the use of industrial strength voice coil actuators provides a compelling alternative given a desirable set of heterogeneous features and requirements that span
Robert Van Rooyen   +2 more
openaire   +2 more sources

High speed video capture for mobile phone cameras [PDF]

open access: yes, 2012
We consider an electromechanical model for the operation of a voice coil motor in a mobile phone camera, with the aim of optimizing how a lens can be moved to a desired focusing motion. Although a methodology is developed for optimizing lens shift, there
Burke, M.   +12 more
core  

A Novel Voice Coil Motor Used in Nano-positioning Device

open access: yes, 2015
This paper proposes a novel moving-coil voice coil motor(VCM) used for driving nano-positioning device. This VCM implements bilateral Halbach array permanent magnet as the stator and three separated coils with the slotted coil skeleton as the mover.. The
Dong, Liang   +10 more
core   +1 more source

Artificial Intelligence–Based Online Symptom Assessment Tools for Systemic Lupus Erythematosus Diagnosis: Patient Perspectives

open access: yesArthritis Care &Research, EarlyView.
Objective The objective of this article is to identify perceptions of patients with systemic lupus erythematosus (SLE) regarding artificial intelligence (AI)–based online symptom assessment tools, and the potential of these tools to address diagnostic barriers.
Olivia A. Stein   +7 more
wiley   +1 more source

Modeling and Control of a Dual Stage Actuator Hard Disk Drive

open access: yesJournal 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

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