This paper presents an investigation into the development of an adaptive active control mechanism for vibration suppression using genetic algorithms (GAs). A cantilever flexible beam system in transverse vibration is considered in this paper. The unwanted vibrations in the structure are assumed to be due to a single point disturbance of broadband nature. An AVC system is designed for optimum cancellation of broadband vibration along the beam. The controller design relations are formulated such that to allow on-line design and implementation and, thus, yield an adaptive control algorithm. Genetic algorithms are used for estimation of the adaptive controller characteristics, where the controller is designed based on the plant model. A comparative performance of the GA and conventional recursive least squares schemes is presented. The GA based AVC algorithm is implemented and simulation results verifying the performance of the algorithm in the suppression of vibration along the beam presented and discussed.
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