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Surface Performance Evaluation and Mix Design of Porous Concrete with Noise Reduction and Drainage Performance. [PDF]
Materials (Basel)Xiu Y +6 more
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Yagi-Uda antenna with impedance vibrators
2010 20th International Crimean Conference "Microwave & Telecommunication Technology", 2010The solution of a problem of current distribution in Yagi-Uda antenna with impedance vibrators is represented. The influence of surface impedance of the vibrators on electrodynami-cal characteristics of considered structure has been investigated.
M. V. Nesterenko +3 more
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The impedance vibrator in an anisotropic plasma
IEEE Antennas and Propagation Society International Symposium. 1995 Digest, 1995The exciting of the waves in a plasma are one of the most important problem in new methods of acceleration using plasma waveguides. The task become particularly complicated if the external magnetic field appear because in this case the plasma will be anisotropic.
Khizhnyak, N. A. +2 more
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Digital synthetic impedance for application in vibration damping
Review of Scientific Instruments, 2016In this work we present construction details of a precision, standalone, and compact digital synthetic impedance for application in the field of vibration damping. The presented device is based on an embedded ARM microcontroller with external AD and DA converters and a special analog front-end.
J, Nečásek, J, Václavík, P, Marton
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Impedance-matched vibration massager
The Journal of the Acoustical Society of America, 2009A hand-held massager capable of self-excited, impedance-matched vibration for optimal massaging of each particular body part of each particular individual. The massager includes a hollow, open-ended contact piece to which is coupled a vibrator and which is to be held against a desired body part.
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Calculating impedance vibrator antennas
Technical Physics Letters, 2017The technique of analytical reversal of a hypersingular equation is used to solve the equation of an impedance vibrator antenna. A numerical method for solving the equation is developed, and its efficiency is demonstrated.
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Monitoring Vibrating Structures Using PZT Impedance Transducers
Advanced Materials Research, 2008Electromechanical impedance (EMI) technique using lead zirconate titanate (PZT) transducers has been increasingly applied to structural health monitoring (SHM) of aerospace, civil and mechanical structures. The PZT transducers are usually surface bonded to or embedded in a structure and subjected to actuation so as to interrogate the structure at the ...
Ai Wei Miao, Yao Wen Yang
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Optimal impedance design for piezoelectric vibration control
2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601), 2004Piezoelectric transducers are commonly used as strain actuators in the control of mechanical vibration. One control strategy, termed piezoelectric shunt damping, involves the connection of an electrical impedance to the terminals of a structurally bonded transducer.
A.J. Fleming, S.O. Reza Moheimani
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