Vibration Control of Smart Cantilever Beam Using Strain Rate Feedback

In this paper simulation and experimental results of Strain rate feedback for active vibration control of a cantilever beam are presented. The piezoelectric patches are fixed on the surface of the host beam based on the Harmonic and Modal analysis done in a Finite Element tool (ANSYS). The dynamic model of the smart beam for the first two modes is obtained using a System Identification technique. The feedback control algorithm is analyzed and is implemented in real-time using National Instruments cRIO 9022 controller. It is observed that with this feedback law 49.29% and 52.84% reduction are obtained for first and second modes of vibration respectively. The result verifies the effectiveness of the controller to suppress the vibration of the smart beam.