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Application of a LIPCA for the structural vibration suppression of an aluminum cantilever beam with a tip mass

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Abstract

Use of bare PZT as an actuator in the field of active vibration suppression may cause some drawbacks such as critical breaks in the installation process, short circuits in the host material and low fatigue performance. To alleviate these problems, we developed a new actuator called a lightweight piezocomposite actuator (LIPCA). The LIPCA has five layers: three glass-epoxy layers, a carbon-epoxy layer and a PZT layer. We implemented a LIPCA as an actuator to suppress the vibration of an aluminum cantilever beam with a tip mass. For the control algorithm in our test, we used positive position feedback. The filter frequency for this type of feedback should be tuned to the frequency of the target mode. The first three experimental natural frequencies of the aluminum cantilever beam agree well with the results of finite element methods. The effectiveness of using a LIPCA as an actuator in active vibration suppression was investigated with respect to the time and frequency domains, and the experimental results show that LIPCAs can significantly reduce the amplitude of forced vibrations as well as the settling time of free vibrations.

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Authors and Affiliations

  1. Department of Aerospace Engineering, Konkuk University, 1 Hwayang-dong Gwangjin-gu, 143-701, Seoul, Korea

    Landong Martua

  2. Artificial Muscle Research Center, Konkuk University, 1 Hwayang-dong Gwangjin-gu, 143-701, Seoul, Korea

    Seok Heo

  3. Biomimetics & Intelligent Microsystem Laboratory, Department of Advanced Technology Fusion, Konkuk University, 1 Hwayang-dong Gwangjin-gu, 143-701, Seoul, Korea

    Nam Seo Goo

Authors
  1. Landong Martua
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  2. Seok Heo
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  3. Nam Seo Goo
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Correspondence to Nam Seo Goo.

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Martua, L., Heo, S. & Goo, N.S. Application of a LIPCA for the structural vibration suppression of an aluminum cantilever beam with a tip mass. J Mech Sci Technol 21, 919–923 (2007). https://doi.org/10.1007/BF03027069

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  • DOI: https://doi.org/10.1007/BF03027069

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