In order to overcome the difficulties of multimodal active vibration damping of the flexible thin structure using simultaneous piezoelectric sensing and actuation, an noncollocated vibration control method, in which piezoelectric film sensors and actuators were shaped using different shaping functions, was proposed in this paper. At first, fundamental equations were summarized and vibration responses of the beam were derived based on the modal coordinate systems. Then, it was shown that by considering phase characteristics of the controller in conjunctions with the polarity of the piezofims in high order modal frequencies, multimodal control will be implemented both theoretically and experimentally.

Date Published: 27 April 2011
PDF: 6 pages
Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79772L (27 April 2011); doi: 10.1117/12.882098

Published in SPIE Proceedings Vol. 7977:
Active and Passive Smart Structures and Integrated Systems 2011
Mehrdad N. Ghasemi-Nejhad, Editor(s)