EACS 2016 paper - Semi-active Vibration Control Using Piezoelectric PZT Composite Films
EACS 2016 Paper No. 124
This interdisciplinary research work of civil and electrical engineers deals with the piezoelectricceramic material, lead zirconate titanate (PZT) and its potential future use as a semi-active structural control device in a civil engineering context. The study examines first what is currently known about piezo ceramics and their existing applications in fields such as energy harvesting and as sensors. The main part of the paperdeals with implementing piezoelectricceramics as a semi-active damping system for the vibration control of lightweight non-structural components. This procedure is experimentally analysed forthe damping response of an oscillating aluminium cantilever beam. The study shows that, by using an RLCequivalentcircuit in conjunction with a piezoelectricceramic transducer, the vibrations in the beam due toan initial disturbance issignificantly reduced. By correctly optimizing the components within the circuit, the resonance frequency of the circuit can be tuned to the natural frequency of the beam. The experiments show that an optimal choice of circuit parameters may increase the damping performanceup to180%.