
Proceedings Paper
On the use of negative capacitances for vibration damping of piezoactuated structuresFormat | Member Price | Non-Member Price |
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Paper Abstract
Vibrations of structures equipped with a piezoelectric actuator
can be damped by connecting the electrodes of the actuator to a
suitable electric circuit. The insertion of a negative capacitance
in the electric circuit, able to compensate the reactive impedance
of the piezoelectric actuator, rise up the damping performance of
the device. In this paper different circuits containing a negative
capacitance are proposed and optimized for both single-mode and
multi-mode damping. A theoretical analysis is performed in the
former case, yielding closed-form expressions for the achieved
exponential time-decay rate of vibrations, whereas a numerical
optimization is employed in the latter case. The proposed circuits
show good performances in simulation for both single-mode and
multi-mode damping.
Paper Details
Date Published: 16 May 2005
PDF: 12 pages
Proc. SPIE 5760, Smart Structures and Materials 2005: Damping and Isolation, (16 May 2005); doi: 10.1117/12.600885
Published in SPIE Proceedings Vol. 5760:
Smart Structures and Materials 2005: Damping and Isolation
Kon-Well Wang, Editor(s)
PDF: 12 pages
Proc. SPIE 5760, Smart Structures and Materials 2005: Damping and Isolation, (16 May 2005); doi: 10.1117/12.600885
Show Author Affiliations
Paolo Bisegna, Univ. of Rome Tor Vergata (Italy)
Giovanni Caruso, ITC-CNR (Italy)
Published in SPIE Proceedings Vol. 5760:
Smart Structures and Materials 2005: Damping and Isolation
Kon-Well Wang, Editor(s)
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