Active noise control systems currently in use and/or described in the research literature are typically based on adaptive signal processing theory or, equivalently, adaptive feedforward control theory. This paper presents a modern control approach to the problem of active noise cancellation in a three-dimensional space. The controller is designed based on a direct self-tuning regulator. Two forms of adaptive control, namely, pole placement and minimum variance controls are considered and compared in simulation. An implementation of the adaptive minimum variance controller is used to successfully attenuate a harmonic disturbance in a laboratory setting.
A Modern Control Approach to Active Noise Control
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Shoureshi, R., Brackney, L., Kubota, N., and Batta, G. (December 1, 1993). "A Modern Control Approach to Active Noise Control." ASME. J. Dyn. Sys., Meas., Control. December 1993; 115(4): 673–678. https://doi.org/10.1115/1.2899195
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