Vibrational simulation of offshore floating wind turbine and its directional movement control by fuzzy logic

Abstract

In this paper, a certain type of wind turbine has been simulated and its foundation directions has been controlled by fuzzy logic. This turbine model collection has seven degrees of freedom and turbine directional movement controls by placing three jacks on three bases and using powers on bases. Movement control has been done by considering two movement inputs and angular velocity between bases and relationship between this movement and angular speed and their effect on turbine directional movement. For angle movement and angle speed has considered three areas and nine equations to control directional movement among bases and regarding to three angle speeds in turbine symmetrically and with similar behavior totally will obtain 27 equations to control movement and angular speeds among bases. Turbine inputs have considered as steps and angle movement rate decreased by controller to one fourth of initial rate.