Results 191 to 200 of about 1,517 (234)

Modeling and Control of Piezoelectric Stack Actuators with Hysteresis [PDF]

open access: yes, 2013
Piezoelectric actuators are popularly applied as actuators in high precision systems due to their small displacement resolution, fast response and simple construction. However, the hysteresis nonlinear behavior limits the dynamic modeling and tracking control of piezoelectric actuators.
Minjal, Marwan Nafea
openaire   +2 more sources

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

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   +2 more
openaire   +2 more sources

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   +8 more
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

Comparison of piezoelectric and electrostrictive actuator stacks

SPIE Proceedings, 1992
Piezoelectrics have been around for decades as acoustic or sensing components. In the last few years, however, they have seen increasing use as means to provide motion and control in the micron realm, well below the resolution level of mechanical or electromechanical devices. Their high hysteresis (15 - 20%), however, was a problem in some systems, and
John Galvagni, Bharat S. Rawal
openaire   +1 more source

Durability Properties of Piezoelectric Stack Actuator

Japanese Journal of Applied Physics, 1998
Changes of temperature were measured for stack actuators having various values of E c and bending strength. The increase of temperature was 75°C in the center of low E c stack for a starting environment temperature of 120°C with 130 Hz driving frequency.
Takenobu Sakai, Hiroshi Kawamoto
openaire   +1 more source

A transparent polymeric flexure-hinge nanopositioner, actuated by a piezoelectric stack actuator

Nanotechnology, 2011
Nanopositioning using piezoelectric actuation and a flexure mechanism is one of most common methods for nanometre-scale positioning. Generally, flexure mechanism nanopositioners have been made from metal. Thus, their application to various environments needs careful consideration with regard to corrosion and circumference interference.
Ki Woon, Chae   +2 more
openaire   +2 more sources

Tracking control of a distributed-parameter piezoelectric stack actuator

2009 European Control Conference (ECC), 2009
The combination of flatness-based trajectory planning and feedforward control with asymptotically stabilizing dynamic feedback control is considered for the tracking control of a distributed-parameter model of a piezoelectric stack actuator.
Thomas Meurer   +2 more
openaire   +1 more source

Compact piezoelectric stacked actuators for high power applications

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2000
Small, hollow, multilayer actuators with a diameter of 3 mm were fabricated by the stacking method from piezoelectric hard lead zirconate titanate (PZT) ceramics. Langevin vibrators were also constructed with the hollow multilayer actuators. The performance capabilities of the actuator and Langevin vibrator samples were examined under high-power ...
K, Yao   +4 more
openaire   +2 more sources

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