This paper describes research into the use of discrete piezoelectric sensors and actuators for active modal control of flexible two-dimensional structures such as might be used as components for spacecraft. A dynamic coupling term is defined between the sensor/actuator and the structure in terms of structural mode shapes, location and piezoelectric behavior. The relative size of the coupling term determines sensor/acutator placement. Results are shown for a clamped square plate and for a large antenna. An experiment was performed on a thin foot-square plate clamped on all sides. Sizable vibration control was achieved for first, second/third (degenerate) and fourth modes.
Discrete piezoelectric sensors and actuators for active control of two-dimensional spacecraft components
Diskrete piezoelektrische Sensoren und Aktoren für die aktive Regelung zweidimensionaler Raumfahrzeugkomponenten
1991
13 Seiten, 10 Bilder, 1 Tabelle, 4 Quellen
Conference paper
English
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