Positive position feedback control for large space structures

A new technique for vibration suppression in large space structures is investigated in laboratory experiments on a thin cantilever beam. The technique, called Positive Position Feedback (PPF), makes use of generalized displacement measurements to accomplish vibration suppression. Several features of...

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Bibliographic Details
Published in:AIAA journal 1990-04, Vol.28 (4), p.717-724
Main Authors: Fanson, J. L, Caughey, T. K
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Spacecraft Design, Testing And Performance
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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Summary:A new technique for vibration suppression in large space structures is investigated in laboratory experiments on a thin cantilever beam. The technique, called Positive Position Feedback (PPF), makes use of generalized displacement measurements to accomplish vibration suppression. Several features of Positive Position Feedback make it attractive for the large space structure control environment. The realization of the controller is simple and straightforward. Global stability conditions can be derived which are independent of the dynamical characteristics of the structure being controlled, i.e., all spillover is stabilizing. Furthermore, the method can be made insensitive to finite actuator dynamics, and is amenable to a strain-based sensing approach.
ISSN:0001-1452
1533-385X
DOI:10.2514/3.10451