Results 31 to 40 of about 1,517 (234)
An Inchworm and Stick-Slip Dual Mode Piezoelectric Linear Actuator for Cell Injection
IEEE Access, 2023 Cell injection system for biomedical engineering demands that actuators have large stroke, high resolution and speed for cell positioning and injection. Single mode piezoelectric actuators could meet some of these requirements but hardly all.
Jijie Ma +6 more
doaj +1 more source
Scientific Reports, 2023 The present study introduces a multi-degree-of-freedom (MDOF) ultrasonic motor, which is capable of driving a spherical rotor using spiral wire stators and a piezoelectric stack actuator. Wire stators and piezoelectric stack actuators enable the proposed
Seyed Hassan Jahantab +3 more
doaj +1 more source
Bidirectional Drive with Inhibited Hysteresis for Piezoelectric Actuators
Sensors, 2022 Piezoelectric actuators with a flexible displacement amplification structure are widely used in the fields of precision driving and positioning. The displacement curve of conventional piezoelectric actuators is asymmetrical and non-linear, which leads to
Weiqing Huang +4 more
doaj +1 more source
Experimentally valided approach for the simulation of the forging process using mechanical vibration [PDF]
, 2009 In this study, an experimental setup of a forging process has been designed which allows to apply vibrations to the lower die of amplitude ranging from 0 to 80 ?m at frequencies varying from 1 to 130Hz thanks to the use of a stack piezoelectric actuator ...
ABBA, Gabriel +3 more
core +1 more source
Behavioral implications of piezoelectric stack actuators for control of micromanipulation [PDF]
Proceedings of IEEE International Conference on Robotics and Automation, 2002 A lumped-parameter model of a piezoelectric stack actuator has been developed to describe actuator behavior for purposes of control system analysis and design, and in particular for microrobotic applications requiring accurate position and/or force control. In addition to describing the input-output dynamic behavior, the proposed model explains aspects
Michael Goldfarb, Nikola L. Celanovic
openaire +1 more source
IEEE Access, 2019 A bolt-clamped type piezoelectric actuator, which could output rotary motions by using longitudinal-torsional hybrid vibration, was proposed and tested in this paper.
Deen Bai +3 more
doaj +1 more source
Advanced Composites Letters, 2019 Piezoelectric stack actuators are a type of excellent smart devices that can activate large power and displacement outputs due to their unique stack configuration and have been widely used in linear vibrators for various engineering applications. For the
Jianjun Wang +4 more
doaj +1 more source
Micromachines, 2022 A new piezoelectric inchworm actuator with screw clamping mechanisms has been developed recently for the wing folding mechanism of a small unmanned aircraft where the actuator power density is a great concern.
Haichao Sun +4 more
doaj +1 more source
Journal of Low Frequency Noise, Vibration and Active Control, 2023 A high-precision equipment is very sensitive to vibration, even micro vibration. How to isolate the low-frequency broadband multidirectional vibration remains a challenge.
Wentao Zou +3 more
doaj +1 more source
Micromachines, 2023 In this work, a novel piezoelectric actuator based on the stick–slip principle is proposed. The actuator is constrained by an asymmetric constraint approach; the driving foot produces lateral and longitudinal coupling displacements when the piezo stack ...
Liang Wang +3 more
doaj +1 more source