On the design of hybrid active-passive piezoelectric vibration damping

Paper i proceeding, 2010

Recently hybrid piezoelectric damping, combining a passive shunt network with a driving voltage, has been extensively investigated. Combining active and passive damping in this manner has proven advantageous for reasons concerning both control performance and control effort. This study presents a theoretical investigation of a plate structure with a surface bonded piezoelectric element. The piezoelectric element is shunted with an inductive-resistive network, which is connected in series to an active voltage source forming a hybrid active-passive vibration control system. The purpose of this study is to investigate the design of such hybrid systems. A parameter study is conducted by varying the resistance and inductance of the shunt. The damping performance, control effort and fail-safe damping of the hybrid system is evaluated. Results that the optimal shunt network of the hybrid system strongly depends on the desired effect.