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Design of Switching Damping Control for Smart Structure Self-Powered Adaptive Damping Control

[+] Author Affiliations
Chao-Ting Wu, Chih-Hsiang Yang, Wen-Jong Wu, Chih-Kung Lee

National Taiwan University, Taipei, Taiwan

Paper No. SMASIS2010-3666, pp. 431-436; 6 pages
doi:10.1115/SMASIS2010-3666
From:
  • ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
  • Philadelphia, Pennsylvania, USA, September 28–October 1, 2010
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-4415-1 | eISBN: 978-0-7918-3886-0
  • Copyright © 2010 by ASME

abstract

This paper presents a new damping control circuit which named adaptive VSPD [1] (adaptive velocity-controlled switching piezoelectric damping) that can be used to vary control voltage of VSPD damping circuit with the amplitude variation and be self-powered itself as well. Since the voltage source in the VSPD damping control circuit may cause a stability problem at small vibrations, an adaptive voltage source can be designed to purposely solve this problem. The design concept of an adaptive VSPD unit is not only to dampen the residual vibration but also to maintain the system stability by incorporating an adaptive control voltage. In fact, the energy needed for the extra voltage source within the control circuit can be provided by the storage capacitor and the energy stored can be harvested from the structure vibration energy. With this design, the damping performance can be maximized while maintaining system stability at the same time and also does not add complexity to the circuit. All the theoretical modeling, simulation and experimental results will all be detailed in this paper.

Copyright © 2010 by ASME

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