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Proceedings Paper

Non-symmetrical semi-active vibration control based on synchronized switching damping
Author(s): Hongli Ji; Jinhao Qiu; Jin Zhang; Hong Nie; Li Cheng
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Paper Abstract

An unsymmetrical switch circuit is designed for semi-active control method based on synchronized switching damping principle of piezoelectric actuators. A bypass capacitor and an additional switch are used to realize unsymmetrical bipolar voltage. The control logic of the switches is introduced in detail and the switched voltages, which directly influence the control performance, are derived as functions of the vibration amplitude and the outputs of the voltage sources. Simulations were carried out to verify the design circuit and the theoretical results of the switched voltage. The voltage ratio increases with increasing bypass capacitance, but its increasing rate decreases. The results show that large bypass capacitor is needed to realize a voltage ratio of 3, which is common in some piezoelectric actuator such as MFC.

Paper Details

Date Published: 1 April 2014
PDF: 15 pages
Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 90571R (1 April 2014); doi: 10.1117/12.2045878
Show Author Affiliations
Hongli Ji, Nanjing Univ. of Aeronautics and Astronautics (China)
The Hong Kong Polytechnic. Univ. (China)
Jinhao Qiu, Nanjing Univ. of Aeronautics and Astronautics (China)
Jin Zhang, Nanjing Univ. of Aeronautics and Astronautics (China)
Hong Nie, Nanjing Univ. of Aeronautics and Astronautics (China)
Li Cheng, The Hong Kong Polytechnic Univ. (China)


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

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