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Proceedings Paper

Thermal and mechanical characterization of NASA high-displacement actuators for satellite instrumentation
Author(s): Robert G. Bryant; S. A. Evans; E. R. Long Jr.; Robert Lee Fox
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Paper Abstract

NASA's High Displacement Actuators (HDAs) are being examined for several potential aerospace applications. In order to determine if these HDAs are suitable for these applications, the strain must be determined as a function of applied voltage and stress over the range of temperature required for the environment of space. Additionally, the variability between HDAs of the same design must be determined to establish their performance average and standard deviation. Towards this end, a matched set of rectangular HDAs were fabricated and characterize to determine their on-center displacement. These actuators were run at a 1 Hz frequency using peak-to-peak voltages from 100 to 800 volts with a maximum negative voltage of -150 volts. The test temperature ranged from -101 to 66 degrees C at 28 degrees C intervals. Loads ranging form 50g to 1450g were line loaded on center to observe the effects of strain on displacement. After preliminary characterization, these HDAs were incorporated into a prototype linear motor drive system for satellite instrumentation. This paper describes the fabrication, test methodology and the resulting performance of these HDAs as well as the linear piezo motor.

Paper Details

Date Published: 12 June 2000
PDF: 7 pages
Proc. SPIE 3991, Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies, (12 June 2000); doi: 10.1117/12.388161
Show Author Affiliations
Robert G. Bryant, NASA Langley Research Ctr. (United States)
S. A. Evans, St. Olaf College (United States)
E. R. Long Jr., NASA Langley Research Ctr. (United States)
Robert Lee Fox, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 3991:
Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies
Jack H. Jacobs, Editor(s)

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