Vibration Control for Precision Manufacturing Using Piezoelectric Actuators

Multivariable Lqg Vibration Control Using Charge-driven Piezoelectric Actuators

Piezoelectric actuators are known to exhibit hysteresis when driven at relatively large voltages. In most situations this phenomenon is detrimental. Electric charge is known to naturally reduce the effects of hysteresis. The interaction of charge driven piezoceramics with flexible structures is analyzed and reveals that the dynamics of the system are different from the voltage driven case. A pr...

Optimizing the Performance of Piezoelectric Actuators for Active Vibration Control

This paper discusses the selection process for piezoelectric transducers (PZT) used as actuator elements for suppressing vibrations in a flexible beam system. The effects of changing physical parameters such as the relative thickness of the piezoelectric ceramic with respect to the beam, the optimum location of the PZT actuator, and the length of the PZT are studied based on the singular value ...

Active Vibration Suppression of Sandwich Beams using Piezoelectric Shear Actuators

This paper deals with the experimental and numerical assessment of the vibration suppression of smart structures using piezoelectric shear actuators. Experimental results are presented for an adaptive sandwich cantilever beam that consists of aluminum facings and a core made of two piezoelectric shear actuators and foam. The electric Þeld is applied perpendicular to the poling direction of the ...

Active Vibration Suppression of Smart Structures Using Piezoelectric Shear Actuators

Vibration Control of a Mechanical Structure with Piezoelectric Actuators - a Comparison of Bimorph and Stack Actuators

The practical results of the vibration suppression of a cantilever beam with a low voltage piezoelectric bimorph patch and a stack actuator are discussed. After the equation of motion of the controlled system is obtained by the finite element method, a modal analysis is performed to reduce the numbers of degrees of freedom. A modal linear quadratic feedback controller is realized on a real-time...