Snap-action bistable micromechanism actuated by nonlinear resonance

Snap-action bistable mechanisms have a practical use in applications when very few but well defined states of a micro-mechanism are required. Conventionally, the switching between bistable states is done statically, utilizing either electrostatic or thermal actuation. This paper explores a paradigm...

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Bibliographic Details
Main Authors: Casals-Terre, J., Shkel, A.
Format: Conference Proceeding
Language:English
Subjects:
Aerodynamics
Mathematical model
Micromechanical devices
Microswitches
Optical arrays
Optical filters
Resonance
Switches
Testing
Transient analysis
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Summary:Snap-action bistable mechanisms have a practical use in applications when very few but well defined states of a micro-mechanism are required. Conventionally, the switching between bistable states is done statically, utilizing either electrostatic or thermal actuation. This paper explores a paradigm utilizing structural resonance phenomena to switch dynamically between states. We reports a detailed mathematical model governing the non-linear response of the buckled beams in their bistable equilibrium; analytical and FEA results describing non-linear dynamics of the mechanism near its equilibrium state and transient dynamics of switching between bistable states; and design, fabrication, and initial characterization results of a micro-machined double-beam test structure
ISSN:1930-0395
2168-9229
DOI:10.1109/ICSENS.2005.1597843