Active interior acoustics control of bandlimited disturbances

Arun Sampath; Balakumar Balachandran

doi:10.1117/12.275641

6 June 1997 Active interior acoustics control of band-limited disturbances

Arun Sampath, Balakumar Balachandran

Proceedings Volume 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems; (1997) https://doi.org/10.1117/12.275641
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

Extensions of our previous analytical and experimental investigations into active control of bandlimited disturbances in a three-dimensional enclosure are presented. The frequency range of the bandlimited disturbance is chosen to encompass structural and/or enclosure resonances. Distributed piezoceramic actuators and distributed polyvinylidene fluoride (PVDF) sensors are mounted on one of the enclosure boundaries. Acoustic sensors are used inside and outside the enclosure. An analytical formulation based on a state-space model is developed for local vibration control on an enclosure boundary and/or local noise control inside the enclosure for bandlimited disturbances. The error sensor signals are minimized by using digital feedforward control schemes based on filtered-U gradient descent algorithms. Analytical predictions from the current work are compared with the results obtained in our previous experimental investigations and discussed.

Citation Download Citation

Arun Sampath and Balakumar Balachandran "Active interior acoustics control of band-limited disturbances", Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); https://doi.org/10.1117/12.275641

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