Control of MEMS Nanopositioners With Nano-Scale Resolution

Published

November 10, 2006

Author(s)

Jason J. Gorman, Yong Sik Kim, Nicholas Dagalakis

Abstract

Several approaches for the precision control of micro-scale positioning mechanisms, or MEMS nanopositioners, are presented along with initial experimental results which demonstrate nano-scale positioning resolution. The MEMS nanopositioners discussed in this paper are novel precision mechanisms comprised of a bent-beam thermal actuator and a flexure mechanism for each degree of freedom (DOF). These mechanisms can be used for a host of ultra-precision positioning applications, including nanomanipulation, scanning probe microscopy, high-density data storage and beam steering arrays. Concentrating on a 1 DOF MEMS nanopositioner, empirical static and dynamic models have been derived using characterization data obtained from experiments with optical and laser probe microscopes. Based on these models, three control approaches have been developed: 1) a quasi-static nonlinear open-loop controller, 2) a nonlinear forward compensator, and 3) a nonlinear PI controller. Simulation andinitial experimental results are presented, and the benefits of each of these approaches are discussed.

Proceedings Title

Proceedings of the ASME International Mechanical Engineering Conference and Exhibition | 2006| ASME

Conference Dates

November 5-10, 2006

Conference Location

Chicago, IL, USA

Conference Title

ASME International Mechanical Engineering Conference and Exhibition

Pub Type

Conferences

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Keywords

MEMS, nanopositioner, precision motiion control

Citation

Gorman, J. , Kim, Y. and Dagalakis, N. (2006), Control of MEMS Nanopositioners With Nano-Scale Resolution, Proceedings of the ASME International Mechanical Engineering Conference and Exhibition | 2006| ASME, Chicago, IL, USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=823602 (Accessed December 10, 2024)