Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6618
Title: Model independent control of lightly damped noise/vibration systems
Authors: Yuan, J 
Keywords: Acoustic variables control
Control system analysis
Control theory
Convergence of numerical methods
Feedforward control
FIR filters
Functions
IIR filters
Impulse response
Military data processing
Telecommunication systems
Transfer functions
Wave filters
Issue Date: Jul-2008
Publisher: Acoustical Society of America
Source: Journal of the Acoustical Society of America, July 2008, v. 124, no. 1, p. 241-246 How to cite?
Journal: Journal of the Acoustical Society of America 
Abstract: Feedforward control is a popular strategy of active noise/vibration control. In well-damped noise/vibration systems, path transfer functions from actuators to sensors can be modeled by finite impulse response (FIR) filters with negligible errors. It is possible to implement noninvasive model independent feedforward control by a recently proposed method called orthogonal adaptation. In lightly damped noise/vibration systems, however, path transfer functions have infinite impulse responses (IIRs) that cause difficulties in design and implementation of broadband feedforward controllers. A major source of difficulties is model error if IIR path transfer functions are approximated by FIR filters. In general, active control performance deteriorates as model error increases. In this study, a new method is proposed to design and implement model independent feedforward controllers for broadband in lightly damped noise/vibration systems. It is shown analytically that the proposed method is able to drive the convergence of a noninvasive model independent feedforward controller to improve broadband control in lightly damped noise/vibration systems. The controller is optimized in the minimum H₂ norm sense. Experiment results are presented to verify the analytical results.
URI: http://hdl.handle.net/10397/6618
ISSN: 0001-4966
DOI: 10.1121/1.2936365
Rights: Copyright 2008 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.
The following article appeared in Yuan, J. (2008). Model independent control of lightly damped noise/vibration systems. Journal of the Acoustical Society of America, 124(1), 241-246 and may be found at http://scitation.aip.org/content/asa/journal/jasa/124/1/10.1121/1.2936365.
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