Results 251 to 260 of about 23,122 (291)

V-stack piezoelectric actuator

SPIE Proceedings, 2001
Aeroelastic control of wings by means of a distributed, trailing-edge control surface is of interest with regards to maneuvers, gust alleviation, and flutter suppression. The use of high energy density, piezoelectric materials as motors provides an appealing solution to this problem. A comparative analysis of the state of the art actuators is currently
Emil V. Ardelean, Robert L. Clark
openaire   +1 more source

Study on Piezoelectric Stacked Generator

Advanced Materials Research, 2011
A piezoelectric generator based on the piezoelectric stacked elements is applied to realize electro- mechanical energy conversion in this paper. The piezoelectric stacked generator is constructed. The relational expression about output electrical characteristic parameters, the constructional dimension parameters of piezoelectric stack elements and ...
Wei Lin, Zhe Li, Wen Chen, Jing Zhou
openaire   +1 more source

Passive shunt damping of a piezoelectric stack nanopositioner

Proceedings of the 2010 American Control Conference, 2010
The speed and accuracy of nanopositioning systems is heavily influenced by the presence of lightly damped mechanical resonances. In this work, an electrical impedance is connected in series with the driving piezoelectric stack actuator to damp the first mechanical resonance.
Arnfinn Aas Eielsen, Andrew J. Fleming
openaire   +1 more source

Piezoelectric ceramic stacks for underwater transducers

2015 IEEE Underwater Technology (UT), 2015
An analytical model is presented of a stack of annular rings used in underwater Tonpilz and Flextensional transducers to radiate high acoustic power. The length of each ring is much less than the average diameter. The model is based on exact solutions to exact piezoelectric governing equations for rings. Boundary and continuity conditions are satisfied
P.A. Nishamol, D.D. Ebenezer
openaire   +1 more source

Simulation model of the piezoelectric stack actuator

Proceedings of the 13th International Carpathian Control Conference (ICCC), 2012
Piezoactuators become a perspective component for micromechanics and active vibration control. The piezoactuator as a microdrive operates on the principle of the reverse piezoelectric effect. Mechanical properties of the piezoactuators are as follows: high frequency range of operation, small travel range and large applied force.
Jaroslav Los, Jaromir Zavadil, Jiri Tuma
openaire   +1 more source

Piezoelectric stack actuator life test

2011 Aerospace Conference, 2011
Future NASA interferometer missions require actuators for precision positioning to accuracies of the order of nanometers. For this purpose, commercially available multilayer piezoelectric stack actuators are being considered for driving these precision positioning mechanisms.
Stewart Sherrit, null Xiaoqi Bao, Christopher M. Jones, Jack B. Aldrich, Chad J. Blodget, James D. Moore, John W. Carson, Renaud Goullioud, Bruno Jau   +8 more
openaire   +1 more source

Advanced piezoelectric–ferroelectric stack actuator

Sensors and Actuators A: Physical, 2009
Abstract A conceptual design and an operational algorithm for an advanced piezoelectric–ferroelectric stack actuator are developed. The actuator takes advantage of the large strains due to the domain-switching phenomenon and utilizes the nonlinear range of response of the ferroelectric material.
Uri Kushnir, Oded Rabinovitch
openaire   +1 more source

A multi-piezoelectric structure: the stacked transducer

IEEE 1991 Ultrasonics Symposium, 2002
A new piezoelectric structure made of several ceramic plates stacked together is proposed. With such an arrangement a gain in sensitivity can be obtained via constructive addition of the different ceramic signals appropriately delayed. Conversely, a reduction of the pulse duration can be achieved with destructive interference.
L. Chofflet, M. Fink
openaire   +1 more source

Analysis on coupled vibration of piezoelectric ceramic stack with two piezoelectric ceramic elements

The Journal of the Acoustical Society of America, 2019
A longitudinally polarized piezoelectric ceramic stack with two piezoelectric ceramic elements is an important part of sandwich piezoelectric transducers. The three-dimensional coupled vibration of piezoelectric ceramic stack is analyzed. Since the longitudinal and radial dimensions of particular piezoelectric ceramic stacks are approximately equal ...
Xiangdi, Meng, Shuyu, Lin
openaire   +2 more sources

A novel microgripper hybrid driven by a piezoelectric stack actuator and piezoelectric cantilever actuators

Review of Scientific Instruments, 2016
For the piezo-driven microgripper, one issue is to enlarge the grasping stroke and realize parallel grasping movement in the compact design. Piezoelectric stack actuator (PSA) and piezoelectric cantilever actuator (PCA) are two kinds of typical piezoelectric actuators. In this study, a novel microgripper hybrid driven by a PSA and two PCAs is proposed,
Weilin, Chen, Xianmin, Zhang, Sergej, Fatikow   +2 more
openaire   +2 more sources