Vibration control of a composite beam by an adaptive semi-active method based on LMS algorithm

In this paper, an adaptive semi-active SSDV (synchronized switch damping on voltage) method based on the LMS algorithm is proposed and applied to the vibration control of a composite beam. In the SSDV method, the value of voltage source in the switching circuit is critical to its control performance. In the adaptive approach proposed in this study, the voltage coefficient is adjusted adaptively using the LMS algorithm. The new adaptive approach is compared with the derivative-based adaptive SSDV proposed in the former study in the control of the first mode of a composite beam. The control results show that adaptive adjustment of voltage coefficient is effective in the vibration control of the composite beam and that LMS-based approach is slightly better than the derivative-based approach.