LQG FLUTTER CONTROL OF WIND TUNNEL MODEL USING PIEZO-CERAMIC ACTUATOR

摘要

A single element of piezo ceramics is used in this study, instead of conventional actuators such as a hydraulic actuator or electric motor, as an actuator in order to control flutter. This study aims at confirming that the free vibration in the still air and the flutter in the wind tunnel, of an aluminum plate wing, can actually be controlled by a single element of a piezo ceramic actuator by L control. The wing model of a rectangular aluminum plate (2 mm× . Mm× .5 mm) and the aluminum's additional mass (2 . Mm× 15 . Mm× .5 mm) has one piezo ceramic element PZT (4 . Mm × 2 . Mm × . 1 mm) attached on its one side. First we used proportional control for free vibration and flutter in order to confirm the fundamental effectiveness of PZT. And used L control for flutter in order to confirm a better effect of PZT. So piezo ceramic actuator was confirmed to be effective enough to control flutter and confirmed to flutter speed increased.