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Proceedings Paper

Active suppression of plate vibration with piezoceramic actuators/sensors using multiple adaptive feedforward with feedback loop control algorithm
Author(s): Yeung-Shik Kim; Insoo Kim; Chul Lee; Chan Young Moon
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Paper Abstract

This paper presents a methodology to suppress the vibration of thin rectangular plate clamped all edges. Intelligent materials such as the piezoelectric ceramic are used as actuators and sensors. The experimental modeling technique, i.e., the state-space frequency domain identification, is introduced to model the complex shaped structures bonded with noncollocated actuators/sensors. This method is much free from the Multi-Input Multi-Output (MIMO) model order problem caused at the digital implementation and also reduces distortion of the signal. In control scheme, the adaptive feedforward with feedback control algorithm is adopted since it is robust for both the transient and persistent external disturbances. The adaptive feedforward control uses the well known Multiple filtered-x LMS (least mean square) algorithm. The MIMO error path dynamics is controlled by the feedback loop which is constructed by multivariable digital LQG (Linear Quadratic Gaussian) controller composed of the regulator and Kalman filter. Experiment results demonstrate the effective reduction of the vibration label and the robustness for both the transient and persistent external disturbances.

Paper Details

Date Published: 4 June 1999
PDF: 12 pages
Proc. SPIE 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures, (4 June 1999); doi: 10.1117/12.350105
Show Author Affiliations
Yeung-Shik Kim, Kumoh National Univ. of Technology (South Korea)
Insoo Kim, Kumoh National Univ. of Technology (South Korea)
Chul Lee, Kumoh National Univ. of Technology (South Korea)
Chan Young Moon, Kumoh National Univ. of Technology (South Korea)


Published in SPIE Proceedings Vol. 3667:
Smart Structures and Materials 1999: Mathematics and Control in Smart Structures
Vasundara V. Varadan, Editor(s)

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