Piezoelectric sensors and actuators for active vibration damping using digital control

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 ...

Optimal Placement of Actuators and Sensors for Vibration Active Control

Optimal placement of actuators and sensors is an important issue in vibration active control. An index for joint consideration of controllability and observability based on singular values of Hankel matrix is described at first, then an objective function according to the index is defined for actuator and sensor placement. A genetic algorithm procedure (GA) is adopted to solve the optimization ...

ACTIVE NOISE AND VIBRATION CONTROL LITERATURE SURVEY: Sensors and Actuators

This study arose from the need to control noise in naval vessels to reduce their detectability and hence vulnerability to enemy attack. In this report a detailed review of sensor and actuator technologies that could be used for active noise and vibration control in ship structures has been provided. The review focused on a wide range of sensor and actuator materials, such as piezoelectric and e...

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