SUMMARY

There are many instances when the control of continuous flexural systems is necessary. To reduce the amplitude of vibrations, many active control methods have been proposed that utilize piezoelectric actuators. One of these control methods is a straightforward, analog method utilizing a negative capacitance control circuit, or shunt. The negative capacitance shunt alters the mechanical properties of the piezoelectric material to attenuate flexural vibrations. Yet, the negative capacitance circuit is limited by electrical instability as the control gain is increased. The proposed work will utilize a periodic array of shunted piezoelectric transducers to create a more effective control system; hypothesized to increase the magnitude and frequency range of the control ability. Investigations of the electromechanical coupling of the mechanical and electrical aspects of the vibrating system, piezoelectric properties and electrical components will allow for better control system design.