Error Sensing Strategy for Active Structural Acoustic Control Based on Acoustic Radiation Modes

Abstract:

A new sensing strategy based on acoustic radiation modes for active structural acoustic control approach is proposed for the minimization of the acoustic radiation from a vibrating simply supported plate. Measuring a few points velocity on the vibrating surface and solving the underdetermined equations of the radiation mode expansion, the approximate values of amplitudes of the first radiation modes can be obtained. Taking the above approximate amplitudes as the input signals of the controller, this forms an error sensing strategy based on radiation modes and corresponding active control strategy. The numerical simulations results are presented to show the feasibility of this error sensing strategy.

• Periodical: Advanced Materials Research (Volume 346)
• Pages: 682-688
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.346.682
• Online since: September 2011
• Authors: Jin Wu Wu, Fei Tan
• Keywords: Acoustic Power, Active Structural Acoustic Control, Sensing Strategy

References

[1] R. L. Clark, C. R. Fuller, A model reference approach for implementing active structural acoustic control. Journal of the Acoustical Society of America 92(1992) 1534-1544.

DOI: 10.1121/1.403945

[2] P. Masson, A. Berry and J. Nicolas. Active structural acoustic control using strain sensing. Journal of the Acoustical Society of America 102(1997) 1588-1599.

DOI: 10.1121/1.420071

[3] B. -T. Wang, C .R. Fuller, Near-field pressure, intensity, and wave-number distributions for active structural acoustic control of plate radiation: Theoretical analysis. Journal of the Acoustical Society of America 92(1992) 1489-1498.

DOI: 10.1121/1.405277

[4] M. E. Johnson, S. J. Elliot, Active Control of Sound Radiation Using Volume Velocity Cancellation, Journal of the Acoustical Society of America 98(1995) 2174–2186.

DOI: 10.1121/1.413332

[5] B.Z. Marcellin, K. Naghshineh, J.W. Kamman, Narrow band active control of sound radiated from a baffled beam using local volume displacement minimization. Applied Acoustics 62(2001) 47–64.

DOI: 10.1016/s0003-682x(00)00019-0

[6] P. Gardonio, Y. S Lee, S. J. Elliot, S Debost, Analysis and Measurement of a Matched Volume Velocity Sensor and Uniform Force Actuator for Active Structural Acoustic Control, Journal of the Acoustical Society of America 110(2001) 025–3031.

DOI: 10.1121/1.1412448

[7] T.C. Sors, S. J. Elliot, Volume velocity estimation with accelerometer arrays for active structural acoustic control. Journal of Sound and Vibration 258(2002) 867–883.

DOI: 10.1006/jsvi.2002.5186

[8] Jiang Zhe. A modal analysis for the acoustic, radiation problems I: theory. Acta Acoustic (China) 23(2004) 26-35.