| This research is combined with "large ship roll motion control simulation" scientific research project.On the basis of the investigation of the status quo of the application of the technology and equipment on the ship roll reduction at home and abroad,in view of the domestic and foreign scholars to use fin stabilizer on the actual situation of large ship antirolling study is not much,we use a type of large ship model as the research object to study the rolling characteristics under different sea condition.Furthermore,with fin stabilizer for antirolling device design and simulation of its control system.The research mainly includes the following aspects:First,establish the rolling linear model and nonlinear model of the ship based on ship model experiment data;Establish the model of wave interference;Analysis of different rolling characteristics of the navigation condition.Second,considering the influence of rolling Angle to fin lift coefficient,lift coefficient model of fin stabilizer is set up.Optimization and validation of the model,to ensure that the lift coefficient model conforms to the real working state of the fin.Third,design of damping controller part of the control system.Using improved particle swarm algorithm based on simulated annealing algorithm to optimize PID controller parameters,improve the adaptability of PID controller.Fourth,the overall design of ship anti-rolling fin control system.Using MATLAB software to the mathematical models of various modular,including the lift coefficient of ship model,the fin model,the model of the PID controller.And then build system of simulation circuit.For fin control adopted two different amount of independent control fins synchronization.At last,fin control system are simulated and verified.Simulate the damping performance of control system under different sea condition,and gives the simulation curve and related statistics.Through the analysis of simulation results,the control strategy is of evaluation and improvement. |
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