Abstract
This paper deals with technologies to control vibration, Vibration control through feedback control and Vibration control through shunt damping technology using Piezo-electric devices have been discussed in this paper. The goal is to suppress the unwanted vibrations of structures. In case of first technology, a smart structure would be able to sense the vibration and generate a controlled actuation to it. A feedback controller sends the correction information to the smart actuator so as to minimize the vibration. The second technology utilizes an external circuit (shunt damping technology) across the terminals of smart structure based transducers to implement control mechanism. To develop the understanding, to prove the concept and to design a generic methodology, the control work is carried out on automotive analogous structures such as a cantilever beam and tuning fork. These structures are bonded with Lead Zirconate Titanate (PZT) patches as piezoelectric sensor and actuator for minimizing vibrations.