ACTIVE CONTROL OF RADIATED DUCT NOISE WITH AN INSUFFICIENT NUMBER OF SENSORS AND ACTUATORS

If one wants to control the noise from a duct, then one must have a sufficient number of sensors and actuators so that the control system is observable and controllable. The number of sensors and actuators for controlling radiating noise from a duct has to be incorporated with the number of modes th...

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Bibliographic Details
Published inJournal of sound and vibration Vol. 221; no. 3; pp. 351 - 369
Main Authors Yoon, D.-B., Kim, Y.-H.
Format Journal Article
LanguageEnglish
Published London Elsevier Ltd 01.04.1999
Elsevier
Subjects
Acoustics
Aeroacoustics and atmospheric sound
Aeroacoustics, atmospheric sound
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Noise: its effects and control
Physics
Active system
Large pipe
Acoustic radiation
Controllability
Robustness
Experimental study
Noise control
Modeling
Observability
Monitoring control system
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Summary:If one wants to control the noise from a duct, then one must have a sufficient number of sensors and actuators so that the control system is observable and controllable. The number of sensors and actuators for controlling radiating noise from a duct has to be incorporated with the number of modes that one wants to control. These considerations motivated the present study which considers a control system that has fewer sensors and actuators than the number of propagating modes in a duct. The control performance and robust reliability of such a kind of control system are investigated, theoretically and numerically. The likelihood of success in reducing the radiation power of a duct is verified by theoretical analysis and numerical simulations. In addition, the control performance of the control system is verified by experiments.
ISSN:0022-460X
1095-8568
DOI:10.1006/jsvi.1998.1985