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Proceedings Paper

Integrated active and passive control design methodology for the NASA LaRC CSI evolutionary model
Author(s): Eric Schmitz; Kenneth E. Richards Jr.; Christopher T. Voth
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Paper Abstract

A general design methodology to integrate active control with passive damping has been demonstrated on the NASA LaRC CSI Evolutionary Model (CEM), a ground testbed for future large, flexible spacecraft. A limited bandwidth active controller is designed with a frequency-shaped H2 algorithm which minimizes the response of a line-of-sight (LOS) measurement system. Using the modal strain energy (MSE) method, a passive damping treatment is designed based on damping level requirements for a set of targeted modes in the high-frequency band, beyond the active control bandwidth. The damping levels are selected to achieve robustness as well as the same level of performance in the high frequency band as in the active control bandwidth. A set of 60 viscoelastic damped struts were designed and fabricated for the CEM. An integrated active/passive controller was successfully implemented on the CEM and was evaluated against an active-only controller.

Paper Details

Date Published: 1 May 1994
PDF: 18 pages
Proc. SPIE 2193, Smart Structures and Materials 1994: Passive Damping, (1 May 1994); doi: 10.1117/12.174097
Show Author Affiliations
Eric Schmitz, Martin Marietta Astronautics Group (United States)
Kenneth E. Richards Jr., Martin Marietta Astronautics Group (United States)
Christopher T. Voth, Martin Marietta Astronautics Group (United States)

Published in SPIE Proceedings Vol. 2193:
Smart Structures and Materials 1994: Passive Damping
Conor D. Johnson, Editor(s)

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