Development of an electromechanical admittance approach for application in the vibration control of intelligent structures

The present work considers the possibility of vibration control of a distributed dynamical system, such as flexible plates using local piezoelectric (PZT) actuators/sensors and the electromechanical admittance concept. When PZT actuators bonded on structures are used in active vibration and acoustic control, the desired deformation field in the structure is obtained through the application of localized line forces and moments generated by applying an appropriate electrical field on the outer surfaces of the PZT patches. The electromechanical admittance generated at the electrical terminals of a PZT-driven smart structure is then extracted to synthesize a desired damping performance. This is achieved by a FEM-based minimization of the difference between the computed and the desired electromechanical admittance signature for investigated frequency ranges.

[1]  P. W. Wang,et al.  Applications of the Impedance Method on Multiple Piezoelectric Actuators Driven Structures , 2001 .

[2]  M. E. Stavroulaki,et al.  Comparisons of smart damping treatments based on FEM modeling of electromechanical impedance , 2008 .

[3]  C. Liang,et al.  An impedance method for dynamic analysis of active material systems , 1994 .

[4]  P. F. Massier,et al.  Viscous effects on the flow coefficient for a supersonic nozzle , 1970 .

[5]  V. Varadan,et al.  Finite element-optimization methods for the active control of radiated sound from a plate structure , 1995 .

[6]  V. Varadan,et al.  Closed loop finite element modeling of active structural damping in the frequency domain , 1997 .

[7]  Craig A. Rogers,et al.  Modeling of induced strain actuation of shell structures , 1995 .

[8]  Vijay K. Varadan,et al.  FINITE ELEMENT MODELLING OF STRUCTURES INCLUDING PIEZOELECTRIC ACTIVE DEVICES , 1997 .

[9]  T. Bailey,et al.  Distributed Piezoelectric-Polymer Active Vibration Control of a Cantilever Beam , 1985 .

[10]  Fu-Kuo Chang,et al.  Finite element analysis of composite structures containing distributed piezoceramic sensors and actuators , 1992 .

[11]  E. Crawley,et al.  Use of piezoelectric actuators as elements of intelligent structures , 1987 .

[12]  Craig A. Rogers,et al.  An Impedance-Based System Modeling Approach for Induced Strain Actuator-Driven Structures , 1996 .

[13]  Costas P. Providakis,et al.  FEM Modeling of Electromechanical Impedance for the Analysis of Smart Damping Treatments , 2007 .

[14]  C. I. Tseng,et al.  Distributed piezoelectric sensor/actuator design for dynamic measurement/control of distributed parameter systems: A piezoelectric finite element approach , 1990 .