Results 71 to 80 of about 22,792 (197)

Piezoelectric energy harvesting pedal integrated with a compliant load amplifier

open access: yesAdvances in Mechanical Engineering, 2019
Energy generation technologies that use piezoelectric materials as uninterrupted power supplies are one of the most practical solutions of low-power wireless sensor network.
YiHe Zhang, Chul-Hee Lee
doaj   +1 more source

Sliding mode control based piezoelectric actuator control [PDF]

open access: yes, 2004
In this paper a method for piezoelectric stack actuator control is proposed. In addition a brief discussion about the usage of the same methods for estimation of external force acting to the actuator in contact with environment is made.
Abidi, Khalid Seyed   +4 more
core  

An optical coherence microscope for 3-dimensional imaging in developmental biology [PDF]

open access: yes, 2000
An optical coherence microscope (OCM) has been designed and constructed to acquire 3-dimensional images of highly scattering biological tissue. Volume-rendering software is used to enhance 3-D visualization of the data sets. Lateral resolution of the OCM
Fernandez, Andrew D.   +9 more
core   +2 more sources

Concept and Evaluation of a New Piezoelectric Transducer for an Implantable Middle Ear Hearing Device

open access: yesSensors, 2017
Implantable middle ear hearing devices (IMEHDs) have been developed as a new technology to overcome the limitations of conventional hearing aids. The piezoelectric cantilever transducers currently used in the IMEHDs have the advantages of low power ...
Houguang Liu   +7 more
doaj   +1 more source

A Novel Hybrid Actuator Driven Magnetically in the Bi-Cell PEM Fuel Cell Stack

open access: yesMetals, 2017
This study develops an air breathing pump driven by a piezoelectric actuator for a proton exchange membrane fuel cell (PEMFC) stack. Permanent magnets are combined with a piezoelectric actuator to drive three air breathing pumps using magnetic force ...
Hsiaokang Ma, Yuanlung Hsu, Poching Hsu
doaj   +1 more source

Energy Harvesting and Management for Wireless Autonomous Sensors

open access: yes, 2008
Wireless autonomous sensors that harvest ambient energy are attractive solutions, due to their convenience and economic benefits. A number of wireless autonomous sensor platforms which consume less than 100?W under duty-cycled operation are available ...
Al-Hashimi, Bashir M.   +3 more
core   +1 more source

Preloading Piezoelectric Stack Actuators in High-Speed Nanopositioning Systems [PDF]

open access: yesFrontiers in Mechanical Engineering, 2016
Recent development in high-speed nanotechnology applications such as scanning probe microscopy and nanofabrication has increased interest on the advancement of high-bandwidth flexure-guided nanopositioning systems. These systems are capable of providing motions with sub-nanometer resolution over a positioning bandwidth of a few kilohertz or more.
openaire   +2 more sources

Dynamic Analytical Solution of a Piezoelectric Stack Utilized in an Actuator and a Generator

open access: yesApplied Sciences, 2018
This paper presents the dynamic analytical solution of a piezoelectric stack utilized in an actuator and a generator based on the linear piezo-elasticity theory.
Xinnan Liu, Jianjun Wang, Weijie Li
doaj   +1 more source

Improvement in Durability of Piezoelectric Stack Actuator.

open access: yesJournal of the Ceramic Society of Japan, 1999
A study of durability test was piezoelectric stack actuator having various values of Qm, Tc, Ec and bending strength. The high bending strength but low Ec stack showed a decrease of displacement and appeared cracks which occurred at the edge of positive side of PZT pellet and grown to the center of diameter and negative side.
openaire   +2 more sources

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