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Active vibration control of trim panel using a hybrid controller to regulate sound transmission

Authors
  • Kim, Insoo1
  • Kim, Yeung-Shik1
  • 1 Kumoh National Institute of Technology, Department of Mechanical Engineering, 1, Yangho-dong, Gumi, Gyeongbuk, 730-701, South Korea , Gumi, Gyeongbuk (South Korea)
Type
Published Article
Journal
International Journal of Precision Engineering and Manufacturing
Publisher
Korean Society for Precision Engineering
Publication Date
Jan 01, 2009
Volume
10
Issue
1
Pages
41–47
Identifiers
DOI: 10.1007/s12541-009-0007-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

This paper presents a method for actively controlling the sound transmission through an aircraft trim panel using a hybrid feedforward/feedback control technique. The method involves measuring the frequency transfer function of the trim panel system and then creating an autoregressive moving average model using frequency domain curve fitting. The control technique is designed to minimize the vibration of a panel that has a limited piston-like motion. The hybrid controller consists of an adaptive feedforward controller that operates in conjunction with a linear quadratic Gaussian feedback controller. The feedback controller increases the damping capacity of the secondary plant to augment the convergence rate of the adaptive feedforward controller. Experimental results indicate that the hybrid controller effectively reduces the vibration of active trim panels and therefore also reduces the sound transmission of the panel.

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