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Proceedings Paper

Impact of piezoelectric sensoriactuators on active structural acoustic control
Author(s): William R. Saunders; Daniel G. Cole; Harry H. Robertshaw
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Paper Abstract

The development of simultaneous sensing and actuation for a single piezoelectric element, called a sensoriactuator in this paper, provides the opportunity for truly collocated control in adaptive structures. Issues related to collocation are discussed in terms of their effects on active structural acoustic control (ASAC). A variation on earlier feedback ASAC methods, direct radiation feedback (DRFB), is suggested for the sensoriactuator adaptive structure. The DRFB method relies on a discrete-point formulation of the associated radiated energy norm. The influence of the acoustic dynamics on proven sufficient conditions for globally stable collocated velocity feedback is discussed for the first time. Selection of an appropriate Lyapunov function for the stability analysis of collocated DRFB is discussed and compared to previous results for direct velocity feedback in active vibration control.

Paper Details

Date Published: 8 September 1993
PDF: 9 pages
Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152792
Show Author Affiliations
William R. Saunders, Virginia Polytechnic Institute and State Univ. (United States)
Daniel G. Cole, Virginia Polytechnic Institute and State Univ. (United States)
Harry H. Robertshaw, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 1917:
Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
Nesbitt W. Hagood; Gareth J. Knowles, Editor(s)

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