Results 91 to 100 of about 752,171 (204)

Simulate and Analysis the Performance of the Adjust Focus Voice-coil Actuator in Measuring Ptical Path [PDF]

open access: yes, 2009
对测量光路中调焦音圈电机的特性进行了分析,通过对音圈电机特性的仿真,定性分析音圈电机设计参数对电机特性的影响情况。从建立音圈电机的数学模型出发,利用仿真软件SIMulInk实现音圈电机的建模、特性仿真。得到仿真结果后,通过适当调整电机的设计参数,分析电机特性的变化。仿真结果表明,音圈电机动子质量、磁钢磁密等参数的变化都对电机的响应时间、平稳性、稳态误差有较大的影响。在原设计的基础上,可适当地增加电机动子的质量以及磁钢磁密来减小响应时间和稳态误差。这些分析结果为音圈电机的加工 ...
张建寰, 洪盈传
core  

A drive mechanism for a blood pump integrated in an oxygenator

open access: yesCurrent Directions in Biomedical Engineering, 2018
The achievement of a low priming volume of the components in an extracorporeal perfusion system for neonatal and pediatric patients is an open research question.
Aghababaei Amin   +2 more
doaj   +1 more source

Voice Coil Percussive Mechanism Concept for Hammer Drill [PDF]

open access: yes, 2009
A hammer drill design of a voice coil linear actuator, spring, linear bearings, and a hammer head was proposed. The voice coil actuator moves the hammer head to produce impact to the end of the drill bit.
Okon, Avi
core  

Disturbance Rejection in Quadruple-Stage Actuator HDD Servos via RCBode-Plot- Guided Loop Shaping

open access: yesIEEE Access
Energy-assisted magnetic recording technologies are increasingly being adopted in hard disk drives (HDDs), placing ever-greater demands on the precision of magnetic head positioning control.
Takenori Atsumi, Shota Yabui
doaj   +1 more source

Design, Analysis and Test of a Hyperbolic Magnetic Field Voice Coil Actuator for Magnetic Levitation Fine Positioning Stage

open access: yesEnergies, 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
doaj   +1 more source

Desenvolvimento de um método de controle em tempo real da temperatura da bobina e do deslocamento do cone de alto-falantes para operação em alta potência [PDF]

open access: yes, 2005
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia ElétricaCom o alto-falante operando em sistema de alta potência (comum em sistemas de sonorização profissional), o ...
Bortoni, Constâncio
core  

Modelling and control of a high speed, long travel, dual voice coil actuator

open access: yes, 1997
This paper presents a dual voice coil actuator which is suitable for both long travel and high speed short stroke movements. The actuator is arrange in the form of two voice coils motors (VCM), with the small one responsible for high speed/short travels,
Cheung, Byron MY, Cheung, Norbert C
core  

A Dual-Servo Stage With 6 D.O.F. Magnetically Levitated Fine Stage

open access: yesIEEE Access
A novel dual-servo stage using the magnetic levitation technology for semiconductor lithography to achieve high-precision and high-acceleration simultaneously is shown in this paper.
Myeonghyeon Kim, Jae-Heon Jeong
doaj   +1 more source

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

Dual Halbach Array Compact Linear Actuator with Thrust Characteristics Part I Simulation Result

open access: yesActuators
The application of mechanical products in many situations involves linear motion. The cylinder head of an internal combustion engine (ICE), a mechanical product, contains intake and exhaust valves.
Jumpei Kuroda   +11 more
doaj   +1 more source

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