Active vibration control of flexible plate with free-free-clamped-clamped edges using genetic algorithm

Abstract

This paper presents an investigation of system modeling using genetic algorithm and active vibration control of flexible plate structure. The experimental rig was designed and fabricated with free-free-clamped-clamped edges boundary condition in this research. The experimental study was conducted using experimental rig complete with data acquisition and instrumentation system to collect the input-output data of flexible plate structure. This input-output data used to develop the system identification to obtain a dynamic model of flexible plate based on auto-regressive with exogenous input structure. The developed model using genetic algorithm were validated using mean squared error, one step-ahead prediction and correlation test. The fitness function of genetic algorithm is mean squared error between the measured and estimated outputs of flexible plate. The validations of developed model were presented in time domain and frequency domain. The modeling of flexible plate using genetic algorithm was used in active vibration control system design for vibration suppression on the plate structure. The performance of developed controller assessed in term of spectral attenuation obtained for resonance modes.