Results 251 to 260 of about 52,759 (294)

A microgripper using smart piezoelectric actuators

Proceedings. 2000 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2000) (Cat. No.00CH37113), 2002
The manipulation of very small objects is one of the most important tasks in microrobotics. Micromanipulators are required in all fields where precise manipulation of very small objects must be performed like microsurgery or assembly of MEMS. It is well known that downsizing the tools used in the macroworld is not appropriate to achieve tasks in the ...
Yassine Haddab, Nicolas Chaillet, Alain Bourjault   +2 more
openaire   +1 more source

Microswitch with Mixed Piezoelectric and Electrostatic Actuation

TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference, 2007
In this article, a new concept of microswitch is investigated with the objective to decrease the actuation voltage. It consists in a component with two kinds of actuation mechanisms: piezoelectric actuation and electrostatic actuation. The structures were realized with a technology compatible with CMOS technology.
Chapuis, Francois, Defay, Emmanuel, Casset, Fabrice, Manceau, Jean-François, Bastien, Francois, Aïd, Marc   +5 more
openaire   +2 more sources

Internal electrode piezoelectric ceramic actuator

Ferroelectrics, 1983
An internal electrode multilayer piezoelectric ceramic actuator element has been investigated. An individual internal electrode has the same area as the element cross section area. It has no piezoelectric inactive part, so that it shows strain/field characteristics similar to plain piezoelectric ceramics. It can be driven by a relatively low voltage
Sadayuki Takahashi, Atsushi Ochi, Masatomo Yonezawa, Takeshi Yano, Takeshige Hamatsuki, Izumu Fukui   +5 more
openaire   +1 more source

Application of Piezoelectric Actuators at Subsonic Speeds

Journal of Aircraft, 2008
An experimental study has been conducted to investigate the effects of using a series of piezoelectric actuators at two chordwise positions (25 and 50% chord length) on a NACA 0015 aerofoil at subsonic speeds. The lift and drag forces were measured using a three-component force balance.
Amir, M., Kontis, K.
openaire   +1 more source

Piezoelectric multilayer actuator life test

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2011
Potential NASA optical missions such as the Space Interferometer Mission require actuators for precision positioning to accuracies of the order of nanometers. Commercially available multilayer piezoelectric stack actuators are being considered for driving these precision mirror positioning mechanisms. These mechanisms have potential mission operational
Stewart, Sherrit, Xiaoqi, Bao, Christopher M, Jones, Jack B, Aldrich, Chad J, Blodget, James D, Moore, John W, Carson, Renaud, Goullioud   +7 more
openaire   +2 more sources

Equivalent piezoelectric actuator circuits and comparison

2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 2014
Equivalent piezoelectric actuator circuit is necessary for certain applications. Previous models have limits and are not accurate on modelling the real part of piezo impedance at low frequency range. A simple inverse proportional to frequency model is proposed and experimentally validated.
Xinchang Liu, Yoan Civet, Yves Perriard
openaire   +1 more source

Synthesis with Piezoelectric Actuation

2003
Synthesis methods, such as topology optimization method, have been widely applied to design mechanical structures. Therefore, it is natural that they can also be applied to design smart materials and MEMS structures whose current development has been based on the use of simple analytical models, test of prototypes, and analysis using the finite element
openaire   +1 more source

Piezoelectric forceps actuator: Theory and experiments

Review of Scientific Instruments, 2008
This paper studies the characteristic performances of a novel piezoelectric forceps actuator (PFA) that has several potential applications for minimally invasive surgery and assembly lines of semiconductor industries. The first part of the paper treats the PFA model, which is comprised of a piezoelectric slightly curved composite beam derived using ...
openaire   +2 more sources

Review on Piezoelectric Actuators Based on High-Performance Piezoelectric Materials

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022
Haonan Jin, Xiangyu Gao, Kaile Ren
exaly  

Piezoelectric Actuators

2023
openaire   +1 more source