Research on Wave Energy Generation Device Based on Forced Vibration Theory
Based on the advantages of wave energy,such as clean,pollution-free and widest distribution,this paper analyzes the force on the float and vibrator respectively from the perspective of analyzing the heave and pitch motion of the wave energy generating device in seawater.After establishing the dynamic equation based on the dynamic and static method,the position of the rotation axis of the wave energy device's pitch motion is determined,and the moment of inertia function of the float and vibrator is obtained.Then the variable step size four-order and five-order Runge-Kutta-Felhberg algorithm is used to solve the problem,and the motion state of the float and vibrator is obtained at every moment from rest to sag and pitch motion.Finally,with the average output power as the objective function and the constant motion differential equation and damping coefficient as the constraint conditions,the optimization model of wave energy output power is established.The maximum average output power and the corresponding parameters are solved by using variable step size search method and multi-starting global search algorithm.