Results 31 to 40 of about 161 (121)

Design and Optimization of a Large-Air-Gap Voice Coil Motor with Enhanced Thermal Management for Magnetic Levitation Vibration Isolation in a Vacuum

Actuators
This study presents the design, optimization, and experimental validation of a large-air-gap voice coil motor (LAG-VCM) for high-precision magnetic levitation vibration isolation in vacuum environments.
Junren Mu, He Zhang
doaj   +1 more source

Robust Current Control of Voice Coil Motor in Tip-Tilt Mirror Based on Disturbance Observer Framework

IEEE Access, 2021
In this paper, a control methodology based on the disturbance observer (DOB) framework is proposed to improve the current dynamic characteristic and the robustness of the voice coil motor (VCM) in the tip-tilt mirror.
Zongqi Ning, Yao Mao, Yongmei Huang, Chunming Gao   +3 more
doaj   +1 more source

Parametric Simulations on Leakage and Performance of a Miniature Free-Piston Generator (MFPG)

Applied Sciences, 2021
The miniaturization of electrical equipment and popularization of portable devices is an appealing motivation for the development of small-scale heat engines. However, the in-cylinder charge leaks severely as the engine dimension shrinks. The free-piston
Saifei Zhang, Chunhua Zhang, Yong Liu, Wei Wu, Han Wu, Shihua Yuan   +5 more
doaj   +1 more source

Adaptive Feedforward Control Based on Estimated Electromagnetic Parameters upon a Novel Two-Degrees-of-Freedom Actuator with a Unibody Magnetic Circuit

Energies
This paper focuses on the study of the tracking performance of a novel two-degrees-of-freedom (two-DOF) voice coil motor (VCM). Intelligent control algorithms estimate the motor control model by the relationship between the input and output values, and ...
Zhaoxi Yi, Meizhu Luo, Ji-an Duan, Yan Jiang   +3 more
doaj   +1 more source

Mechanisms of Minimum Skew Angle Actuation for Hard Disk Drives

MATEC Web of Conferences, 2016
The utilization of voice coil motor (VCM) rotary actuator in hard disk drives (HDDs) results in skew angles between the read/write head and disk rotation direction.
He Zhimin, Mou Jianqiang, Chan Kheong Sann   +2 more
doaj   +1 more source

LCL Filter Design and Implementation for Improving Transient Position Tracking Control Performance of Voice Coil Motor

IEEE Access, 2020
Voice coil motor (VCM) is widely used in high precision position servo control for its merits of high linearity and no cogging-torque. There are two conventional driving modes: PWM chopper drive and analog drive.
Baochao Wang, Cheng Liu, Zhiwei Wu, Jianhui Hu   +3 more
doaj   +1 more source

ROV Teleoperation in the Presence of Cross‐Currents Using Soft Haptics

Journal of Field Robotics, Volume 42, Issue 6, Page 2580-2593, September 2025.
ABSTRACT The remote operation of underwater vehicles at depth is complicated by the presence of invisible and unpredictable environmental disturbances such as cross‐currents. Communicating the presence of these disturbances to an operator on the surface is made more difficult by the nature of the disturbances and the lack of visible features to ...
Joshua Brown, Ildar Farkhatdinov, Michael Jenkin   +2 more
wiley   +1 more source

Design and Experimental Study of a VCM-Based Stewart Parallel Mechanism Used for Active Vibration Isolation

Energies, 2015
This paper presents the design and experimental study of a voice coil motor (VCM)-based Stewart platform used for active vibration isolation. The high precision payloads carried on the satellites always require an extremely stable environment to work ...
Weichao Chi, Dengqing Cao, Dongwei Wang, Jie Tang, Yifan Nie, Wenhu Huang   +5 more
doaj   +1 more source

A parameter design method of LC filter circuit for closed‐loop dynamic power supply system based on linear power amplifier

IET Power Electronics, Volume 17, Issue 14, Page 1852-1866, 4 November 2024.
In order to improve the efficiency of linear power amplifiers, a bipolar closed‐loop dynamic power supply system based on synchronous buck circuits is proposed as a replacement for the traditional DC power supply. This system can significantly improve the utilization rate of the power supply.
Feixiang Yang, Xueqing Wang, Jin Luo, Qianwen Duan, Zongqi Ning, Yao Mao   +5 more
wiley   +1 more source

Research on Load Adaptive Control for High-Frequency Motion of Voice Coil Motor With Online Parameter Optimization

IEEE Access
The fast tool servo system is a crucial intelligent equipment for workpiece machining and forming in the precision manufacturing field. The Voice Coil Motor (VCM), serving as the driving device of this equipment, offers advantages such as high-frequency ...
Feng Huang, Chenxi Wang, Qipeng Li
doaj   +1 more source