Decentralized harmonic control of sound radiation and transmission by a plate using a virtual impedance approach.

The problem under study in this article is the active control of sound transmission and radiation of a panel under a periodic excitation. The control strategy investigated uses independent control loops between an individual polyvinylidene fluoride (PVDF) sensor and an individual lead zirconate titanate (PZT) actuator. The specific approach employed here uses the concept of virtual impedance. The aim is to determine for each frequency the optimal impedance between each PVDF sensor and the corresponding PZT actuator in order to reduce the sound power radiated by the plate. Theoretical predictions are compared to measurements of the sound radiated and transmission loss of a panel mounted with eight PZT-PVDF units. Reductions of up to 20 dB of the acoustic power can be achieved around mechanical resonances of the system, while the control strategy has little effect for off-resonance excitations.

[1]  Alain Berry,et al.  Decentralized harmonic active vibration control of a flexible plate using piezoelectric actuator-sensor pairs. , 2006, The Journal of the Acoustical Society of America.

[2]  Simon Chesne,et al.  Improvement of Transmission Loss Using Active Control with Virtual Modal Mass , 2008 .

[3]  Michael J. Brennan,et al.  Active vibroacoustic control with multiple local feedback loops. , 2002 .

[4]  P. Micheau,et al.  Decentralized resonant controller for vibroacoustic active control , 2007, 2007 Mediterranean Conference on Control & Automation.

[5]  Louis A. Roussos.  Noise transmission loss of a rectangular plate in an infinite baffle , 1984 .

[6]  Julian D. Maynard,et al.  Nearfield acoustic holography (NAH) II. Holographic reconstruction algorithms and computer implementation , 1987 .

[7]  C. Fuller,et al.  Re-Active Passive devices for control of noise transmission through a panel , 2008 .

[8]  S. O. Reza Moheimani,et al.  An optimization approach to optimal placement of collocated piezoelectric actuators and sensors on a thin plate , 2003 .

[9]  Benoit Petitjean,et al.  Active control experiments for acoustic radiation reduction of a sandwich panel: Feedback and feedforward investigations , 2002 .

[10]  J S Vipperman,et al.  Multivariable feedback active structural acoustic control using adaptive piezoelectric sensoriactuators. , 1999, The Journal of the Acoustical Society of America.

[11]  Chris R. Fuller,et al.  Active control of noise transmission through rectangular plates using multiple piezoelectric or point force actuators , 1991 .

[12]  Jian-Qiao Sun,et al.  LETTER TO THE EDITOR: SOME OBSERVATIONS ON PHYSICAL DUALITY AND COLOCATION OF STRUCTURAL CONTROL SENSORS AND ACTUATORS , 1996 .

[13]  H. Nélisse,et al.  FLUID STRUCTURE Coupling for AN Unbaffled Elastic Panel Immersed in a Diffuse Field , 1996 .

[14]  E Leboucher,et al.  A stability analysis of a decentralized adaptive feedback active control system of sinusoidal sound in free space. , 2002, The Journal of the Acoustical Society of America.

[15]  Julian D. Maynard,et al.  Sound source reconstructions using a microphone array , 1980 .