Piezoelectric sensor configuration for active structural acoustic control
article
There is considerable interest in the use of piezoelectric path sensors in active noise control, particularly in the field of active structural acoustic control (ASAC). One of the reasons is the possibility of integrating the sensors into the structure that produces the unwanted sound. Apart from obvious practical advantages, as compared to microphones placed in the far field of the structure, near"eld sensing results in potentially improved performance, especially with random noise. This is because the delay between the actuators and the sensors should be as small as possible in a feedback system, which has to be used if there is no time-advanced information of the noise. Furthermore, piezoelectric patch sensors have the inherent advantage of integrating over their surface area, which leads to potentially more robust implementations as compared to implementations that use point-like sensors, such as accelerometers.
TNO Identifier
236213
ISSN
0022460X
Source
Journal of Sound and Vibration, 246(1), pp. 175-183.
Publisher
Academic Press
Collation
9 p.
Pages
175-183
Files
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