Active Control of Wind Noise Using Robust Feedback Control

971891

05/20/1997

Event
SAE Noise and Vibration Conference and Exposition
Authors Abstract
Content
A feedback controller bas been developed using robust control techniques to control the sound radiated from turbulent flow driven plates. The control design methodology uses frequency domain loop shaping techniques. System uncertainty, sound pressure level reductions, and actuator constraints are included in the design process. For the wind noise problem, weighting factors have been included to distinguish between the importance of modes that radiate sound and those that do not radiate. The wind noise controller has been implemented in the quiet wind tunnel facility at the Ray W. Herrick Laboratories at Purdue University. A multiple-input, multiple-output controller using accelerometer feedback and shaker control was able to achieve control up to 1000 Hz. Sound pressure level reductions of as much as 15 dB were achieved at the frequencies of the plates modes. Overall reductions over the 100-1000 Hz band were approximately 5 dB.
Meta TagsDetails
DOI
https://doi.org/10.4271/971891
Pages
9
Citation
Heatwole, C., Franchek, M., and Bernhard, R., "Active Control of Wind Noise Using Robust Feedback Control," SAE Technical Paper 971891, 1997, https://doi.org/10.4271/971891.
Additional Details
Publisher
Published
May 20, 1997
Product Code
971891
Content Type
Technical Paper
Language
English