Optimization of Controller Parameters of Rudder Roll Stabilization Using Simplex Optimization Algorithm

Considering the problem of optimizing controller parameters for ship rudder roll stabilization when the closed-loop gain shaping algorithm is used to design the controller, a simplex optimization algorithm is proposed. Specially, integral of time multiplied by the absolute value of error (ITAE) criterion is proposed as the performance index for simplex optimization algorithm, and the controller parameters are optimized on-line according to the output of actual system. The optimization of controller parameters are realized by the simplex optimization algorithm, and the results show that the efficiency of setting the control parameters is improved and the roll amplitude is significantly reduced. In addition, the negative influence of rudder roll stabilization to yaw can be also reduced. This method of simplex optimization algorithm provides a new theory for rudder roll stabilization and establishes a theoretical foundation for the application in practical engineering.