Development of a Pseudo-Uniform Structural Quantity for the Active Control of Structural Radiation

Utah State University

Active noise control has been a highly researched field over the past few decades but the active control of the radiating structures has recently excited interest. Multiple structural quantities and their relationships to acoustic radiation are investigated. This paper also looks at the control of a new structural quantity developed taking advantage of the principle of Rayleigh’s integral and radiated power being strongly dependent on volume velocity. The benefit of this new quantity is that while most active control techniques are highly dependent on sensor location, this technique is not. The control of this quantity and its effect on radiated power and acoustic radiation modes is presented.