Development of a pseudo-uniform structural quantity for use in active structural acoustic control of simply supported plates: An analytical comparison

2012 ◽  
Vol 131 (5) ◽  
pp. 3833-3840 ◽  
Author(s):  
Jeffery M. Fisher ◽  
Jonathan D. Blotter ◽  
Scott D. Sommerfeldt ◽  
Kent L. Gee
Keyword(s):  
Analytical Comparison ◽  
Simply Supported ◽  
Acoustic Control ◽  
Structural Acoustic Control

Effect of Piezoceramic Hysteresis in Passive and Hybrid Structural Acoustic Control

2001 ◽  
Author(s):  
M. Bulent Ozer ◽  
Thomas J. Royston
Keyword(s):  
System Performance ◽  
Finite Dimension ◽  
Computational Studies ◽  
Control Performance ◽  
Hysteresis Model ◽  
Describing Function ◽  
Simply Supported ◽  
Acoustic Control ◽  
The Impact ◽  
Structural Acoustic Control

Abstract Structural acoustic control via passive and hybrid electrical shunting of a piezoceramic wafer bonded onto the surface of a simply supported plate is investigated with emphasis on modeling and understanding the effect of piezoceramic nonlinearity on system performance. A nonlinear rate-independent finite-dimension Ishlinskii hysteresis model is experimentally identified for the PZT wafer by itself and then integrated into the coupled dynamic equations of the overall system consisting of the plate and electrically shunted PZT wafer. This model is then used to investigate the impact of PZT hysteresis on its structural acoustic control performance in passive and hybrid scenarios. A multi-term describing function representation of the Ishlinskii hysteresis model is formulated to aid in computational studies.

Experimental active structural acoustic control of simply supported plates using a weighted sum of spatial gradients

2014 ◽  
Vol 136 (5) ◽  
pp. 2598-2608 ◽  
Author(s):  
Daniel R. Hendricks ◽  
William R. Johnson ◽  
Scott D. Sommerfeldt ◽  
Jonathan D. Blotter
Keyword(s):  
Weighted Sum ◽  
Simply Supported ◽  
Spatial Gradients ◽  
Acoustic Control ◽  
Structural Acoustic Control

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

2011 ◽  
Vol 346 ◽  
pp. 682-688
Author(s):  
Jin Wu Wu ◽  
Fei Tan
Keyword(s):  
Control Strategy ◽  
Acoustic Radiation ◽  
Radiation Mode ◽  
Control Approach ◽  
Mode Expansion ◽  
Simply Supported ◽  
Acoustic Control ◽  
Input Signals ◽  
Active Control Strategy ◽  
Structural Acoustic Control

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.

Experimental synthesis of sound pressure fields for active structural acoustic control testing

2013 ◽  
Vol 25 (7) ◽  
pp. 881-889 ◽  
Author(s):  
Stephan Algermissen ◽  
Sebastian Meyer ◽  
Christina Appel ◽  
Hans P Monner
Keyword(s):  
Sound Pressure ◽  
Pressure Fields ◽  
Acoustic Control ◽  
Structural Acoustic Control
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