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Proceedings Paper

Cryogenic piezoelectric actuators
Author(s): Xiaoning Jiang; William B. Cook; Wesley S. Hackenberger
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Paper Abstract

In this paper, PMN-PT single crystal piezoelectric stack actuators and flextensional actuators were designed, prototyped and characterized for space optics applications. Single crystal stack actuators with footprint of 10 mm x 10 mm and the height of 50 mm were assembled using 10 mm x 10 mm x 0.15 mm PMN-PT plates. These actuators showed stroke of 65 - 85 μm at 150 V at room temperature, and > 30 μm stroke at 77 K. Flextensional actuators with dimension of 10 mm x 5 mm x 7.6 mm showed stroke of > 50 μm at room temperature at driving voltage of 150 V. A flextensional stack actuator with dimension of 10 mm x 5 mm x 47 mm showed stroke of ~ 285 μm at 150 V at room temperature, and > 100 μm at 77K under driving of 150 V should be expected. The large cryogenic stroke and high precision of these actuators are promising for cryogenic optics applications.

Paper Details

Date Published: 17 September 2009
PDF: 8 pages
Proc. SPIE 7439, Astronomical and Space Optical Systems, 74390Z (17 September 2009); doi: 10.1117/12.826341
Show Author Affiliations
Xiaoning Jiang, TRS Technologies, Inc. (United States)
William B. Cook, NASA Langley Research Ctr. (United States)
Wesley S. Hackenberger, TRS Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 7439:
Astronomical and Space Optical Systems
Penny G. Warren; James B. Heaney; Robert K. Tyson; Michael Hart; E. Todd Kvamme; Cheryl J. Marshall, Editor(s)

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