Application of a negative capacitance circuit in synchronized switch damping techniques for vibration suppression

Hongli Ji; Jinhao Qiu; Jun Cheng; Daniel Inman

doi:10.1117/12.847078

12 April 2010 Application of a negative capacitance circuit in synchronized switch damping techniques for vibration suppression

Hongli Ji, Jinhao Qiu, Jun Cheng, Daniel Inman

Author Affiliations +

Proceedings Volume 7643, Active and Passive Smart Structures and Integrated Systems 2010; 76432V (2010) https://doi.org/10.1117/12.847078
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

In the synchronized switching damping (SSD) techniques, the voltage on the piezoelectric element is switched synchronously with the vibration to be controlled using an inductive shunt circuit (SSDI). The inherent capacitance and the inductance in the shunt circuit comprise an electrically resonant circuit. In this study a negative capacitance is used in the shunt circuit instead of an inductance in the traditional SSD technique. The voltage on the piezoelectric element can be effectively inverted though the equivalent circuit is capacitive and no resonance occurs. In order to investigate the principle of the new SSD method based on a negative capacitance (SSDNC), the variation of the voltage on the piezoelectric element and the current in the circuit is analyzed. Furthermore, the damping effect using the SSDNC is deduced, and the energy balance and stability of the new system are investigated analytically. The method is applied to the single mode control and two-mode control of a composite beam, and its control performance was confirmed by the experimental results. For the first mode in single mode control, the SSDNC is much more effective than SSDI. In other cases, the SSDNC is also more effective than the SSDI, although not significantly.

Citation Download Citation

Hongli Ji, Jinhao Qiu, Jun Cheng, and Daniel Inman "Application of a negative capacitance circuit in synchronized switch damping techniques for vibration suppression", Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 76432V (12 April 2010); https://doi.org/10.1117/12.847078

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