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Stepping Piezoelectric Actuators with Large Working Stroke for Nano-positioning Systems: A Review
Publication date: Available online 8 April 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Jianping Li, Hu Huang, Takeshi MoritaAbstractPrecision positioning systems with large working stroke (millimeter or more) and micro/nano-scale positioning resolution are widely required in both scientific research and industries. For this kind of applications, piezoelectric materials based actuators show unique advantages and have been widely employed. To overcome the demerit of the limited working stroke for single piezoelectric element, various stepping motion principles have been proposed in the past years, and accordingly...
Source: Sensors and Actuators A: Physical - April 10, 2019 Category: Physics Source Type: research

A novel microgripper hybrid driven by a piezoelectric stack actuator and piezoelectric cantilever actuators
In this study, a novel microgripper hybrid driven by a PSA and two PCAs is proposed, which can be a better solution for the issue, compared with the previous microgripper using PSA-driven multi-stages displacement amplification mechanism(DAM) or using longer and narrower PCAs. A compact one-stage orthogonalDAM is proposed for the PSA in the microgripper, which can enlarge the grasping stroke and realize parallel grasping movement. The proposed orthogonalDAM is a triangulation amplification-based mechanism with undetermined structural parameters. Bidirectional symmetric input forces/displacements are not required in the pro...
Source: Review of Scientific Instruments - November 9, 2016 Category: Physics Authors: Weilin Chen, Xianmin Zhang and Sergej Fatikow Source Type: research

A parasitic type piezoelectric actuator with the asymmetrical trapezoid flexure mechanism
This study shows a meaningful idea of the utilization of the asymmetrical trapezoid flexure mechanism for the design of novel piezoelectric actuators.Graphical Abstract
Source: Sensors and Actuators A: Physical - February 19, 2020 Category: Physics Source Type: research