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Many techniques for controlling the noise radiated by large structures
require a large number of inputs to the controller to produce global
attenuation. Unfortunately, processing the large number of inputs required is
often beyond the capabilities of current controllers. In attempting to
overcome this problem, many researchers have adopted various
modal-filtering-type techniques. Such techniques involve resolving a small
number of important global quantities (traditionally structural modes) from a
large number of sensor measurements. However, current approaches require
detailed structural information at the design stage. Determining this for
complex, real-world structures may be very difficult, preventing many
techniques from going beyond the laboratory. This project involves
developing a new sensing system strategy, where a radiated sound field is
decomposed using multipole radiation patterns, thereby alleviating the need
for detailed structural information.
This project involves using structural based measurements allowing for
sensors and actuators to be built into the structure to produce a so called
smart structure.
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