Optimal control techniques for active noise suppressionActive suppression of noise in a bounded enclosure is considered within the framework of optimal control theory. A sinusoidal pressure field due to exterior offending noise sources is assumed to be known in a neighborhood of interior sensors. The pressure field due to interior controlling sources is assumed to be governed by a nonhomogeneous wave equation within the enclosure and by a special boundary condition designed to accommodate frequency-dependent reflection properties of the enclosure boundary. The form of the controlling sources is determined by considering the steady-state behavior of the system, and it is established that the control strategy proposed is stable and asymptotically optimal.
Document ID
19890041291
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Banks, H. T. (Brown University Providence, RI, United States)
Keeling, S. L. (Vanderbilt Univerity Nashville, TN, United States)
Silcox, R. J. (NASA Langley Research Center Hampton, VA, United States)