Stanley C. Obilikpa This email address is being protected from spambots. You need JavaScript enabled to view it.1 , Uche P. Onochie1 , Chinyere S. Nweze1 , Bright O. Kalu2 , and Ken-Basil I. Anazodo1

1Department of Mechanical/Mechatronic Engineering, Alex Ekwueme Federal University, Ndufu-Alike, Nigeria
2Department of Mechanical Engineering, Michael Okpara University of Agriculture, Umudike, Nigeria


Received: August 24, 2020
Accepted: November 16, 2020
Publication Date: June 1, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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In this report, the design and numerical analysis of a novel multi-degree of freedom micropositioner driven by piezoelectric stacks actuator were studied. This flexure based positioning mechanism with sensors permits the high-speed translational movement along the X- Y- and Z axes, and rotation about the ZR-axis. This design aims at high stiffness, high precision, and elimination of cross-coupling errors. The modeling and numerical simulation of this device at different actuation voltage were performed to understand the behavior and effects of the applied load on the structure. Furthermore, modal analysis was conducted to determine the resonance frequency in various axes under consideration. Lastly, cross-coupling analysis was carried out to eliminate geometric non-linearity effects. The ability of this device to incorporate the basic robotic motions highlights its significance in dexterous and high-resolution applications especially in micromanipulation and atomic force microscope.

Keywords: Simulation, modeling, micropositioner, piezoelectric stacks, 3D manufacturing


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