A hybrid active noise control (ANC) scheme for suppressing duct noise based on the H∞ control synthesis is proposed. The controllers are designed in terms of performance, stability, and robustness using a general framework of the H∞ robust control theory. In addition to the fixed controller, the system is further enhanced by introducing an adaptive compensator based on the least-mean-square (LMS) algorithm. Youla parameterization is employed in designing the adaptive compensator so that the resulting system is stable. Experimental investigations demonstrate that the proposed methods are effective in suppressing broadband random noise in a finite-length duct.
Issue Section:Research Papers
Comparison of Active Noise Control Structures in the Presence of Acoustical Feedback by Using the H∞ Synthesis Technique,”
Journal of Sound and Vibration, Vol.
Active Noise Control,”
IEEE Signal Processing Magazine, Vol.
Kuo, S. M., and Morgan, D. R., 1995, Active Noise Control Systems: Algorithms and DSP Implementations, New York, John Wiley and Sons.
Modern Wiener-Hopf Design of Optimal Controllers, Part 2: the Multivariable Case,”
IEEE Trans. Auto. Control, Vol.
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by The American Society of Mechanical Engineers