Al-Ghamdi, M. S. and Khater, M. E. and Abdel-Rahman, E. M. and Nepomuceno, E. G. (2020) Quasi-Static Pull-in: an Instability in Electrostatic Actuators. Scientific Reports, 10 (1). pp. 1-8. ISSN 2045-2322

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Abstract

We identify a new instability in electrostatic actuators dubbed quasi-static pull-in. We report experimental evidence of the instability and study its characteristics in two types of micro actuators operating in ambient air. We found that the underlying mechanism is a fast-slow dynamic interaction between slowly-varying electrostatic excitation and fast resonator response that instigate large non-resonant oscillatory orbits and eventually disappears in a global Shilnikov bifurcation. Based on these findings, we formulate and present a new taxonomy of pull-in instabilities in electrostatic actuators.

Item Type:	Article
Keywords:	Quasi-Static; Pull-in; Instability; Electrostatic Actuators;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering Faculty of Science and Engineering > Research Institutes > Hamilton Institute
Item ID:	16705
Identification Number:	https://doi.org/10.1038/s41598-020-61534-w
Depositing User:	Erivelton Nepomuceno
Date Deposited:	15 Nov 2022 16:20
Journal or Publication Title:	Scientific Reports
Publisher:	Nature Publishing Group
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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