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Mathematical Problems in Engineering
Volume 2010, Article ID 768256, 13 pages
Research Article

The Comparative Study of Vibration Control of Flexible Structure Using Smart Materials

1Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Jiangsu 213022, China
2College of Computer and Information, Hohai University, Changzhou 213022, China
3College of Mechanical and Electronics Engineering, Hohai University, Changzhou 213022, China

Received 24 June 2010; Revised 26 October 2010; Accepted 28 October 2010

Academic Editor: Alexander P. Seyranian

Copyright © 2010 Juntao Fei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Considerable attention has been devoted to active vibration control using intelligent materials as PZT actuators. This paper presents results on active control schemes for vibration suppression of flexible steel cantilever beam with bonded piezoelectric actuators. The PZT patches are surface bonded near the fixed end of flexible steel cantilever beam. The dynamic model of the flexible steel cantilever beam is derived. Active vibration control methods: optimal PID control, strain rate feedback control (SRF), and positive position feedback control (PPF) are investigated and implemented using xPC Target real-time system. Experimental results demonstrate that the SRF and PPF controls have better performance in suppressing the vibration of cantilever steel beam than the optimal PID control.