Active vibration isolation using a six-axis orthogonal vibration isolation platform with piezoelectric actuators

Active vibration isolation through a Stewart platform with piezoelectric actuators

A Stewart platform with piezoelectric actuators is presented for micro-vibration isolation. The Jacobian matrix of the Stewart platform, which reveals the relationship between the position/pointing of the payload and the extensions of the struts, is derived by the kinematic analysis and modified according to measured FRFs(frequency response function). The dynamic model of the Stewart platform i...

Vibration Isolation Using a Multi-axis Robotic Platform

Stewart platform is a good candidate for high speed and six degree of freedom motion control, finding its application in the area of multi-axis vibration control. The critical problems associated with Stewart platform are the high non-linearity and uncertainty in its dynamics. To model the system dynamics of the Stewart platform a simple linear model is developed, for the motion of the Stewart ...

Six-axis vibration isolation technology applied to spaceborne interferometers

This paper discusses the vibration isolation problem as it applies to spaceborne interferometers, and presents evidence that vibration isolation will be a required technology fol these instruments. A hardware solution to the spaceborne interferometer isolation problem is offered with experimental evidence of its effectiveness.

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