Results 11 to 20 of about 825,388 (293)

Impedance tracking control of magnetostrictive transducer based on variable stiffness tuning

Journal of Science: Advanced Materials and Devices, 2023
A magnetostrictive transducer (MT) is a highly integrated transducer that enables magneto-mechanical energy conversion when outputting actuation motion or force.
Liang Shu, Bo Li, Yeheng Zhang, Hongbi Deng, Menglun Tao   +4 more
doaj   +1 more source

On the Design and Topology Selection of Permanent Magnet Synchronous Generators for Natural Impedance Matching in Small-Scale Uncontrolled Passive Wind Generator Systems

Energies, 2022
Small-scale uncontrolled passive wind generator systems are an attractive solution for rural energy generation because of the system’s reliability and low cost.
Casper J. J. Labuschagne, Maarten J. Kamper   +1 more
doaj   +1 more source

Direct Matching Antennas in RF Energy Harvesting Systems: A Review

Majlesi Journal of Electrical Engineering, 2022
A historical review of Radio Frequency Energy Harvesting (RFEH) Rectenna (Rectifier Antenna) Systems without a matching network is performed, with emphasis on the antenna part.
Vahid Honarvar, Farzad Mohajeri
doaj   +1 more source

Adaptive matching for compact MIMO systems [PDF]

, 2010
Compact MIMO systems using closely spaced antennas are faced with the well-known problem of antenna mutual coupling (MC) that can degrade the performance.
Thompson, J.S., Mohammadkhani, R., John S. Thompson, Reza Mohammadkhani   +3 more
core   +1 more source

Inductive impedance matching network for Magnetic Resonant Wireless Power Transmission

, 2023
Inductive wireless power transfer is getting more and more attention as the demand for mobile electronic devices grows. There are already well-functioning wireless charging systems for smartphones, tablets, and electric toothbrushes.
Zhaksylyk, Yelzhas
core   +1 more source

Analysis of reflection of signal integrity of transmission line

Gong-kuang zidonghua, 2014
In view of problem of signal integrity of transmission line in high-speed circuit system, the paper gave reasons of reflection phenomenon produced in signal transmission through analysis for equivalent circuit of transmission line on PCB of high-speed ...
CHEN Li
doaj   +1 more source

Variable Impedance Actuators: Moving the Robots of Tomorrow [PDF]

, 2012
Most of today's robots have rigid structures and actuators requiring complex software control algorithms and sophisticated sensor systems in order to behave in a compliant and safe way adapted to contact with unknown environments and humans.
Lefeber, D., Grioli, G., Haddadin, Sami, Stramigioli, S., A. Bicchi, Bicchi, Antonio, Carloni, R., Laffranchi, M., Haddadin, S., Jafari, A., Visser, L.C., Catalano, M.G., M. Catalano, Albu-Schäffer, Alin Olimpiu, Van Damme, M., F. Petit, Caldwell, D., M. Laffranchi, D. Caldwell, G. Ganesh, R. Carloni, Caldwell, D.G., Stramigioli, S.; id_orcid, Burdet, Etienne, Wolf, Sebastian, R. Van Ham, Garabini, M., B. Vanderborght, M. Grebenstein, S. Wolf, Catalano, M., Burdet, E., S. Haddadin, M. Garabini, Grebenstein, Markus, Ganesh, G., Vanderborght, B., D. Lefeber, M. Van Damme, Petit, F., Wolf, S., Van Ham, R., N. Tsagarakis, Albu-Schaeffer, A., Tsagarakis, N., Bicchi, A., E. Burdet, L. C. Visser   +47 more
core   +1 more source

Effect of frequency modulation on impedance matching of single ferrite in ICRH antenna system

He jishu, 2022
BackgroundIon cyclotron resonance heating (ICRH) is an important auxiliary heating method in tokamak. When fast plasma phenomena such as L-H mode transitions and edge localized modes (ELM), etc., happens, a large change in the antenna coupling impedance ...
YANG Kaijian, DU Dan, TAN Qingyi, ZHOU Hua, PAN Guangzu, QIAO Guanjin, GONG Xueyu   +6 more
doaj   +1 more source

A Dynamic Impedance Matching Method and Frequency Tracking of Piezoelectric Transducers [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
Dynamic impedance matching technology can improve the output power and energy conversion efficiency of piezoelectric transducers. Most of the existing dynamic impedance matching method was intelligent numerical optimization algorithm, but the intelligent
JI Yuebo, YANG Yuheng, MENG Chenchen, PENG Yunfeng   +3 more
doaj   +1 more source

Ultra-Broadband Sound Absorbing Materials Based on Periodic Gradient Impedance Matching

Frontiers in Materials, 2022
Ultra-broadband sound absorption with periodic gradient impedance matching is of great concern in the research of acoustic materials. This study investigates the impedance matching of composite acoustic metamaterials comprising micro-perforated plates ...
Fei Wu, Xiao Zhang, Zegang Ju, Jiang Zhao, Man Hu, Mingyuan Gao, Jun Luo, Huayan Pu   +7 more
doaj   +1 more source