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Proceedings Paper

Instability caused by parasitic resistances in piezoelectric shunt damping system with negative capacitor
Author(s): Kento Okumura; Kentaro Takagi; Tsuyoshi Inoue; Ichiro Jikuya
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Paper Abstract

This paper studies the stability problem for a piezoelectric shunt damping system with a simple negative capacitor circuit. A key issue is to consider perturbations of parasitic series and parallel-leakage resistances in a piezoelectric element. Then, it is a bit surprising that the perturbed system becomes unstable, in particular, due to the effect of the parasitic leakage resistance. This instability phenomenon is analytically proved based on the Routh-Hurwitz stability criterion and is also demonstrated by numerical simulations. This paper then illustrates robustification of a negative capacitor circuit by inserting a negative resistance in parallel with the negative capacitor in the simple negative capacitor circuit. This robustification is also demonstrated by a numerical simulation.

Paper Details

Date Published: 1 April 2014
PDF: 9 pages
Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 905738 (1 April 2014); doi: 10.1117/12.2046192
Show Author Affiliations
Kento Okumura, Nagoya Univ. (Japan)
Kentaro Takagi, Nagoya Univ. (Japan)
Tsuyoshi Inoue, Nagoya Univ. (Japan)
Ichiro Jikuya, Nagoya Univ. (Japan)

Published in SPIE Proceedings Vol. 9057:
Active and Passive Smart Structures and Integrated Systems 2014
Wei-Hsin Liao, Editor(s)

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