Modeling and experimental verification using the sensoriactuator circuit for passive vibration damping

Matthew Van Santen Kozlowski; Daniel G. Cole; Robert L. Clark

doi:10.1117/12.472659

27 June 2002 Modeling and experimental verification using the sensoriactuator circuit for passive vibration damping

Matthew Van Santen Kozlowski, Daniel G. Cole, Robert L. Clark

Proceedings Volume 4697, Smart Structures and Materials 2002: Damping and Isolation; (2002) https://doi.org/10.1117/12.472659
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

It has been shown that passive electronic damping can be successfully achieved using tuned RL circuits to shunt piezoelectric materials on structures. These designs provide electronic equivalents of tuned-vibration dampers where the coupling coefficient plays the role of the mass ratio in similar mechanical devices and is the primary factor in determining performance. However, in many applications the coupling coefficient is too small to produce desired or acceptable changes in performance. In addition, changes in system parameters, such as the piezoelectric's capacitance, detune the system also limiting performance. A sensoriactuator circuit offers the ability to eliminate the effects of the piezoelectric's capacitance and improve the coupling coefficient. Thus, electronic dampers built with a sensoriactuator circuit could see improved performance over their strictly passive counterparts. A cantilevered beam test article is modeled with a sensoriactuator attached. The sensoriactuator and appropriate control filter are used in place of the passive shunt circuitry. An optimal circuit design criteria somewhat analogous to that of the resonant shunt damper is developed. The sensoriactuator circuit is built using this design criteria, and the effects of the sensoriactuator electronic damping scheme are included in the model.

Citation Download Citation

Matthew Van Santen Kozlowski, Daniel G. Cole, and Robert L. Clark "Modeling and experimental verification using the sensoriactuator circuit for passive vibration damping", Proc. SPIE 4697, Smart Structures and Materials 2002: Damping and Isolation, (27 June 2002); https://doi.org/10.1117/12.472659

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