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Proceedings Paper

Design and performance of a high-force piezoelectric inchworm motor
Author(s): Jeremy Eli Frank; Gary H. Koopmann; Weicheng Chen; George Andre Lesieutre
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Paper Abstract

A linear inchworm motor was developed for applications in adaptive, conformable structures for flow control. The device is compact (82 X 57 X 13 mm), and capable of unlimited displacement and high force actuation (150 N). The static holding force is 350 N. Four piezoceramic stack elements (two for clamping and two for extension) are integrated into the actuator, which is cut from a single block of titanium alloy. Actuation is in the form of a steel shaft pushed through a precision tolerance hole in the device. Unlimited displacements are achieved by repetitively advancing and clamping the steel shaft. Although each step is only on the order of 10 microns, a step rate of 100 Hz results in a speed of 1 mm/s. Since the input voltage can readily control the step size, positioning on the sub-micron level is possible.

Paper Details

Date Published: 9 June 1999
PDF: 7 pages
Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); doi: 10.1117/12.350747
Show Author Affiliations
Jeremy Eli Frank, The Pennsylvania State Univ. (United States)
Gary H. Koopmann, The Pennsylvania State Univ. (United States)
Weicheng Chen, The Pennsylvania State Univ. (United States)
George Andre Lesieutre, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 3668:
Smart Structures and Materials 1999: Smart Structures and Integrated Systems
Norman M. Wereley, Editor(s)

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