Predictive Control and Co-simulation Analysis of Semi-active Heave Compensation System
The predictive control and co-simulation analysis of semi-active heave compensation system were proposed for the characteristics of response lag and nonlinear time-varying.The ship heave displacement predicted by the PSO-BiLSTM model was used as the control signal input,and the Terminal sliding mode controller controlled the composite hydraulic cylinder to compen-sate the load heave displacement caused by the ship movement.The AMESim-Simulink co-simulation system was established,and three kinds of control compensation performance were compared with or without the prediction model.It was verified that the Terminal sliding mode control semi-active heave compensation system using the PSO BiLSTM prediction algorithm has a good effect,and the compensation rate can reach 95.63%.It is 11.07%higher than PID control and 5.51%higher than ordinary sliding mode control.The simulation results showed that the accurate prediction data as the control input can effectively shorten the response delay and improve the precision of displacement compensation.
NETL
NSTL
万方数据
