Innovations in piezoelectric shunt damping

Andrew J. Fleming; Sam Behrens; S. O. Reza Moheimani

doi:10.1117/12.420891

21 March 2001 Innovations in piezoelectric shunt damping

Andrew J. Fleming, Sam Behrens, S. O. Reza Moheimani

Proceedings Volume 4235, Smart Structures and Devices; (2001) https://doi.org/10.1117/12.420891
Event: Smart Materials and MEMS, 2000, Melbourne, Australia

Abstract

Piezoelectric transducer (PZT) patches can be attached to a structure in order to reduce vibration. The PZT patches essentially convert vibrational mechanical energy into electrical energy. The electrical energy can be dissipated via an electrical impedance. Currently, impedance designs require experimental tuning of resistance values by minimizing the H2 norm of the damped system. After the design process, shunt circuits are normally implemented using discrete reasonable performance has been an ongoing and unaddressed problem in shunt damping. A new approach to implementing piezoelectric shunt circuits is presented. A synthetic impedance, consisting of a voltage controlled circuit source and DSP system, is used to synthesize the terminal impedance of a shunt network. A two mode shunt circuit is designed and implemented for an experimental simply supported beam. The second and third structural modes of the beam are reduced in magnitude by 22 and 18 dB.

Citation Download Citation

Andrew J. Fleming, Sam Behrens, and S. O. Reza Moheimani "Innovations in piezoelectric shunt damping", Proc. SPIE 4235, Smart Structures and Devices, (21 March 2001); https://doi.org/10.1117/12.420891

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available