Simulink Of Ship Roll Motion And Study Of Fin Stabilizer's Control System

Fin stabilizer is one of the most effective ship-stabilized equipment. As the computer technology and intellective control theory have developed quickly in recent years, a series of studies have done to design some effective and intelligent fin stabilizer in order to improve effect of the system of fin stabilizer.The thesis consists of four modules. One is the characters of random sea wave and program of carrying out it. One is the characters of linear model of ship roll motion. One is the theory of steady of ship roll motion and the equipment for it. The last one is the control system of fin stabilizer and the style of control.The first, based on the theory of random sea wave, discusses the constitution of the random sea wave in terms of its spectrum. Solves the simulation problem of slope of wave surface and carry out it by programming.The second, based on the character of ship roll motion, create a linear model of ship roll motion by a certain ship parameter. Achieve a curve of ship roll motion in opened loop and the infection of certain slope of wave surface.The third, figure out every transfer function; Apply the control theory of PID, the control theory of the fuzzy control and the BP artificial neural network into the system of fin stabilizer. Analyze the effect of three parameters in PID theory; study the theory of Fuzzy Control and Fuzzy-PID control; Study the modeling and control model of BP neural network.The last, with the platform of .NET, using the Visual C# language fund the emulational demo interface of the system.All above, every style of control is applied out in fin stabilizer by programming and simulating the result of this system in closed loop. So the remainder angle of the roll ship motion is obvious in every style of control, analysis of the effect of these styles...