Active vibration control of composite beam using a strain gages sensor and piezoelectric patch actuator

Abstract

This article investigates active vibration suppression of a flexible beam with a low dominant frequency using strain gages sensor and dual layer piezoelectric actuators. The strain gages sensor and piezoelectric actuators are in patch form and are surface-bonded to the cantilevered end of the composite beam. The feedback PID control algorithm is adopted for active vibration control of the composite beam . The effects of different gains in proportional, integral and derivative control are considered experimentally. Experiments are conducted to verify the effectiveness of the vibration suppression and to compare the damping effect with different adjustment of PID gains. With given experimental results are determined the best effectiveness of active structure.