Active Control of Wind Noise Using Robust Feedback Control 971891
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.
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. Download Citation
Author(s):
Craig M. Heatwole, Matthew A. Franchek, Robert J. Bernhard
Affiliated:
Purdue Univ.
Pages: 9
Event:
SAE Noise and Vibration Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1997 Noise and Vibration Conference-P-309, SAE 1997 Transactions - Journal of Passenger Cars-V106-6
Related Topics:
Design processes
Wind tunnel tests
Noise
Education and training
Turbulence
Pressure
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »