Results 241 to 250 of about 40,334 (297)

Piezoelectric Actuators Characterization

2012 International Conference on Industrial Control and Electronics Engineering, 2012
This paper describes a system to drive piezoelectric actuators over more than one decade of voltages and one octave of frequencies, in order to perform high-speed complex impedance characterization at a user chosen voltage excitation level. This characterization provides information about electrical and mechanical characteristics of the device under ...
H. Meyer, P. Stadelmann, C. Robert, A. Boegli, P.-A. Farine, P. Margairaz, J. Burger   +6 more
openaire   +1 more source

Piezoelectric microflextensional actuator

SPIE Proceedings, 2004
This paper presents a novel micro flextensional actuator design consisting of bulk PZT bonded to a silicon microbeam. The fabrication process includes boron doping, EDP etching, dicing, and bonding to produce actuators with large displacements (8.7 μm) and gain factors (32) at 100V.
Jongpil Cheong, Srinivas A. Tadigadapa, Christopher D. Rahn   +2 more
openaire   +1 more source

Cryogenic piezoelectric actuators

SPIE Proceedings, 2009
In this paper, PMN-PT single crystal piezoelectric stack actuators and flextensional actuators were designed, prototyped and characterized for space optics applications. Single crystal stack actuators with footprint of 10 mm x10 mm and the height of 50 mm were assembled using 10 mm x10mm x0.15mm PMN-PT plates.
Xiaoning Jiang, William B. Cook, Wesley S. Hackenberger   +2 more
openaire   +1 more source

Piezoelectric Actuator Designs

2008
Piezoelectric actuators are getting immiscible parts of many important electromechanical and smart systems. Smart systems consist mainly of sensors, actuators, and signal processing units. Actuators are the responding units of many smart systems including those for active vibration and noise control, valve, shutter, focal lens, and many others ...
Dog?an A., Uzgur E.
openaire   +2 more sources

Piezoelectric Actuator Renaissance

Energy Harvesting and Systems, 2014
Abstract “Politico-engineering” in the twenty-first century is generating “Piezoelectric Actuator Renaissance” in the area of sustainability and crisis technologies in particular. This paper reviews the recent advances in materials, designing concepts, and new applications of piezoelectric actuators and describes the future perspectives ...
openaire   +1 more source

Piezoelectric torsional actuator

Ferroelectrics, 1994
Piezoelectric torsional actuators have been developed from single ceramic cylindrical bodies using PZT based high d constant piezoelectric ceramics. The actuator geometry is able to produce rotational motion directly by DC voltage control without conventional complex conversion from XY direction motions.
Yoshiaki Fuda, Tetsuo Yoshida
openaire   +1 more source

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

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

Analysis of Beams with Piezoelectric Actuators

Applied Mathematics and Mechanics, 2001
Based on the two-dimensional constitutive relationships of the piezoelectric material, an analytical solution for an intelligent beam excited by a pair of piezoelectric actuators is derived. With the solution the force and moment generated by two piezoelectric actuators and a pair of piezoelectric actuator/sensor are obtained.
Lin, Qirong, Liu, Zhengxing, Wang, Zongli   +2 more
openaire   +2 more sources