Results 31 to 40 of about 22,841 (273)

Electromechanical Modelling of a Piezoelectric Stack Energy Harvester

Proceedings, 2018
In this paper, the behavior of a piezoelectric stack generator subject to a direct mechanical force, such as that experienced by pedestrian loads, is characterized and modelled.
Matthew Evans, Lihua Tang, Chris Bowen, Aiguo P. Hu, Kai Tao, Kean Aw   +5 more
doaj   +1 more source

A novel spherical ultrasonic motor with wire stators and measuring torque and preload via a new method

Scientific Reports, 2023
The present study introduces a multi-degree-of-freedom (MDOF) ultrasonic motor, which is capable of driving a spherical rotor using spiral wire stators and a piezoelectric stack actuator. Wire stators and piezoelectric stack actuators enable the proposed
Seyed Hassan Jahantab, Yousef Hojjat, Behzad Ghavami Namin, Mohammad Shirkosh   +3 more
doaj   +1 more source

Performance Analysis of a Hybrid One-Sided Magnetic Exciter Mounted on a Piezoelectric Stack

Shock and Vibration, 2010
The present work proposes a non-contact hybrid exciter especially useful for harmonic excitation of lightly damped structures/rotors. In the proposed exciter an electromagnet is placed on a piezoelectric stack and the extension of the piezoelectric stack
A. Nandi, S. Neogy
doaj   +1 more source

Wireless actuation of bulk acoustic modes in micromechanical resonators [PDF]

, 2016
We report wireless actuation of a Lamb wave micromechanical resonator from a distance of over 1 m with an efficiency of over 15%. Wireless actuation of conventional micromechanical resonators can have broad impact in a number of applications from ...
Brown, Benjamin, Erramilli, Shyamsunder, Mateen, Farrukh, Mohanty, Pritiraj   +3 more
core   +1 more source

Low-frequency broadband multidirectional vibration isolation by piezoelectric smart platform with active control

Journal of Low Frequency Noise, Vibration and Active Control, 2023
A high-precision equipment is very sensitive to vibration, even micro vibration. How to isolate the low-frequency broadband multidirectional vibration remains a challenge.
Wentao Zou, Ningdong Hu, Xue Yang, Hongping Hu   +3 more
doaj   +1 more source

Vibration Characteristics of Stacked Piezoelectric Transducers

Transactions of the Korean Society for Noise and Vibration Engineering, 2015
ABSTRACT This paper deals with the vibration characteristics of stacked transducers composed of piezoelectric discs, which are main elements of ultrasonic sensors or actuators. The stacked transducers were de-vised in the sense of natural frequencies. Two- or three-layer transducers were fabricated with piezo-electric discs of different diameters.
Dae Jong Kim, Jin Oh Kim
openaire   +2 more sources

Path-length control for a reflector antenna using piezoelectric actuators and a focus adjustment mechanism

Nihon Kikai Gakkai ronbunshu, 2016
A novel method for recovering antenna gains of a reflector antenna system using piezoelectric stack actuators and a focus adjustment mechanism is developed and its feasibility is investigated.
Hiroaki TANAKA
doaj   +1 more source

Performance of transducers with segmented piezoelectric stacks using materials with high electromechanical coupling coefficient

, 2013
Underwater acoustic transducers often include a stack of thickness polarized piezoelectric material pieces of alternating polarity interspersed with electrodes, bonded together and electrically connected in parallel.
Markley, Douglas C., Meyer, Richard J., Thompson, Stephen C.   +2 more
core   +1 more source

A robust loop-shaping approach to fast and accurate nanopositioning [PDF]

, 2013
Peer ...
Aphale, Sumeet S., Ferreira, Antoine, Moheimani, S.O. Reza   +2 more
core   +3 more sources

Nonlinear electromechanical behaviors of piezoelectric generators with hybrid stiffnesses

Energy Conversion and Management: X
In this paper, we introduce a novel two-degree-of-freedom piezoelectric stack hybrid energy harvester including a piezoelectric stack and a set of piezoelectric layers.
Zhongjie Li, Xuejiao Yan, Yan Peng, Jiepeng Liu, Fan Shen, Xie Xie, Jianyong Zheng, Chaoqun Duan   +7 more
doaj   +1 more source