Reducing the inductance requirements of piezoelectric shunt damping systems

Structural vibration can be reduced by shunting an attached piezoelectric transducer (PZT) with an electrical impedance. Current shunt circuit designs, e.g. a single-mode inductor–resistor network, typically require large inductance values of up to thousands of henries. In practice, discrete inductors are limited in size to around 1 H. By placing an additional capacitance across the terminals of the PZT, shunt circuit inductances can be drastically reduced. To justify our claims, we present a theoretical analysis of the damped system and identify the influence of the additional capacitance. Two modes of a simply supported beam are successfully damped using a capacitance modified shunt circuit. A low inductance multi-mode circuit is also studied and experimentally verified.

[1]  Andrew J. Fleming,et al.  Multiple mode current flowing passive piezoelectric shunt controller , 2003 .

[2]  S. O. Reza Moheimani,et al.  On the feedback structure of wideband piezoelectric shunt damping systems , 2003 .

[3]  Andrew J. Fleming,et al.  Multiple Mode Passive Piezoelectric Shunt Dampener 1 , 2002 .

[4]  S. O. Reza Moheimani,et al.  Optimization and implementation of multimode piezoelectric shunt damping systems , 2002 .

[5]  S. O. Reza Moheimani,et al.  Current flowing multiple-mode piezoelectric shunt dampener , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[6]  William W. Clark,et al.  Comparison of low-frequency piezoelectric switching shunt techniques for structural damping , 2002 .

[7]  Lawrence R Corr,et al.  Comparison of low-frequency piezoelectric switching shunt techniques for structural damping , 2002 .

[8]  S. O. Reza Moheimani,et al.  New method for multiple-mode shunt damping of structural vibration using a single piezoelectric transducer , 2001, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[9]  Vijay K. Varadan,et al.  Passive underwater acoustic damping using shunted piezoelectric coatings , 2001 .

[10]  S. O. Reza Moheimani,et al.  Innovations in piezoelectric shunt damping , 2001, SPIE Micro + Nano Materials, Devices, and Applications.

[11]  S.O. Reza Moheimani,et al.  Optimal resistive elements for multiple mode shunt damping of a piezoelectric laminate beam , 2000, Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187).

[12]  Andrew J. Fleming,et al.  Synthetic impedance for implementation of piezoelectric shunt-damping circuits , 2000 .

[13]  George A. Lesieutre,et al.  AN ACTIVELY TUNED SOLID-STATE VIBRATION ABSORBER USING CAPACITIVE SHUNTING OF PIEZOELECTRIC STIFFNESS , 2000 .

[14]  Claude Richard,et al.  Enhanced semi-passive damping using continuous switching of a piezoelectric device on an inductor , 2000, Smart Structures.

[15]  W. Clark.  Vibration Control with State-Switched Piezoelectric Materials , 2000 .

[16]  Shu-yau Wu,et al.  Multiple PZT transducers implemented with multiple-mode piezoelectric shunting for passive vibration damping , 1999, Smart Structures.

[17]  Shu-yau Wu,et al.  Method for multiple-mode shunt damping of structural vibration using a single PZT transducer , 1998, Smart Structures.

[18]  Andrew S. Bicos,et al.  Structural vibration damping experiments using improved piezoelectric shunts , 1997, Smart Structures.

[19]  Colin H. Hansen,et al.  Active control of vibration , 1996 .

[20]  Shu-yau Wu,et al.  Piezoelectric shunts with a parallel R-L circuit for structural damping and vibration control , 1996, Smart Structures.

[21]  J. Hollkamp.  Multimodal Passive Vibration Suppression with Piezoelectric Materials and Resonant Shunts , 1994 .

[22]  D. L. Edberg,et al.  Theoretical and Experimental Studies of a Truss Incorporating Active Members , 1992 .

[23]  Ephrahim Garcia,et al.  A Self-Sensing Piezoelectric Actuator for Collocated Control , 1992 .

[24]  Nesbitt W. Hagood,et al.  Damping of structural vibrations with piezoelectric materials and passive electrical networks , 1991 .

[25]  Nesbitt W. Hagood,et al.  Modelling of Piezoelectric Actuator Dynamics for Active Structural Control , 1990 .

[26]  E. Crawley,et al.  Experimental investigation into passive damping enhancement for space structures , 1989 .

[27]  Lennart Ljung,et al.  System Identification: Theory for the User , 1987 .

[28]  Robert L. Forward,et al.  Electronic damping of vibrations in optical structures. , 1979, Applied optics.

[29]  R.H.S. Riordan,et al.  Simulated inductors using differential amplifiers , 1967 .