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

✍ Scribed by D.-B. Yoon; Y.-H. Kim

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 221 KB
• Volume: 221
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1998.1985

✦ Synopsis

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.