Results 51 to 60 of about 2,895 (258)

Motor Nonlinearities in Electrodynamic Loudspeakers: Modelling and Measurement

Archives of Acoustics, 2014
This paper studies the motor nonlinearities of a classical electrodynamic loudspeaker. Measurements show the dependence of the voice-coil inductance with its position and with the driving current as well as the force factor dependence on ...
Benoit MERIT, Valérie LEMARQUAND, Guy LEMARQUAND, Andrzej DOBRUCKI   +3 more
doaj  

Rapid and Precise Zoom Lens Design Based on Voice Coil Motors with Tunnel Magnetoresistance Sensors

Applied Sciences
In response to the zooming delay issue during the transition from a wide-area search to high-resolution target identification in high-magnification zoom lenses, we propose a drive technology based on voice coil motors.
Junqiang Gong, Jianbin Luo
doaj   +1 more source

Cortical Thickness and White Matter Surface Morphology in Tourette Syndrome: A Cohort Study

Annals of Neurology, EarlyView.
Objective To examine cortical thickness and white matter surface morphology in a large sample of individuals with Tourette syndrome (TS) and neurotypical controls across the lifespan, and to assess associations with symptom severity, comorbidities, and medication use.
Sahar Delavari, Adam C. Frank, Ravi Bansal, Flora M. Vaccarino, Robert A. King, Paul Lombroso, Lawrence Scahill, James F. Leckman, Bradley S. Peterson   +8 more
wiley   +1 more source

Optimised Internet of Thing framework based hybrid meta‐heuristic algorithms for E‐healthcare monitoring

IET Networks, EarlyView., 2022
Abstract Everything can be connected in the Internet of Things (IoTs) technology that enables efficient communication between connected objects. IoTs industry‐based meta‐heuristic and mining algorithms, which are considered an important field of Artificial Intelligence will be used to construct a healthcare application in this study for lowering costs,
Muhaned Al‐Hashimi, Shymaa Mohammed Jameel, Firas Husham Almukhtar, Musaddak Maher Abdul Zahra, Refed Adnan Jaleel   +4 more
wiley   +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
The linear power amplifier (LPA) suffers from low power supply utilization in the DC power supply mode, leading to reduced output efficiency. This paper constructs an efficient power supply mode based on closed‐loop dynamic power supply system (CLDPSs ...
Feixiang Yang, Xueqing Wang, Jin Luo, Qianwen Duan, Zongqi Ning, Yao Mao   +5 more
doaj   +1 more source

Are there morpho‐acoustic patterns of adaptation in nonhuman primate ears? Testing the role of ecology and habitat in shaping ear morphology and function

The Anatomical Record, EarlyView.
Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot, Rémi Laffont, Émilie Steimetz, Patricia Balaresque, Sébastien Couette   +4 more
wiley   +1 more source

Development of system for study on human recognition influenced by changing button press sensation

Mechanical Engineering Journal
Recently, touch screens have been used to operate smartphones and personal computers. When touch panels are used to operate devices, somatosensory feedback cannot be enjoyed.
Yasuhiro ONO, Yuji ISHINO, Takeshi MIZUNO, Masaya TAKASAKI   +3 more
doaj   +1 more source

A critical reappraisal of the carotid sinus and carotid bulb: Distinguishing neurohistological function from vascular geometry

The Anatomical Record, EarlyView.
This review redefines the carotid bulb (CB) as a variable geometric dilation shaped by hemodynamics and the carotid sinus (CS) as a conserved neurohistological baroreceptor field. Distinguishing these entities clarifies a century of anatomical confusion and links geometry, neurohistology, and clinical interpretation within a unified framework ...
Răzvan Costin Tudose, Nicolae Radu, Mugurel Constantin Rusu   +2 more
wiley   +1 more source

Investigation of Force-Controlled Polishing of Complex Curved PMMA Parts on a Machining Center

Machines
During the polishing process of complex curved PMMA parts, the polishing force is an important factor affecting the surface quality and optical performance. In this paper, a force-controlled polishing device integrated into a machining center to maintain
Xiangran Meng, Yingpeng Wang, Xiaolong Yin, Haoyu Fu, Shuoxue Sun, Yuwen Sun   +5 more
doaj   +1 more source

Multi-Physical Design and Resonant Controller Based Trajectory Tracking of the Electromagnetically Driven Fast Tool Servo

Actuators, 2020
In this paper, a voice coil motor (VCM) actuated fast tool servo (FTS) system is developed for diamond turning. To guide motions of the VCM actuator, a crossed double parallelogram flexure mechanism is selected featuring totally symmetric structure with ...
Imran Hussain, Wei Xia, Dongpo Zhao, Peng Huang, Zhiwei Zhu   +4 more
doaj   +1 more source