Rudder/Flap Joint Intelligent Control for Ship Course System

The mathematic model of ship course rudder/flap joint control system is founded. The thought that rudder and flap are considered as two independent planes to design control rules is put forward for the first time. The calculation models of hydrodynamic coefficients of rudder/flap are acquired by means of the least square algorithm. To make full use of rudder/flap, the index function is given from the angle of system control performance and driving energy. The decision-making rules of rudder/flap angles are researched. And the genetic algorithm is adopted to optimize the rudder/flap angles. The method of infeasibility degree is applied to deal with the constrained condition of the main/flap angle. And some measures are used to improve the searching efficiency of the genetic algorithm. The system simulation is given, and the simulation result shows that, compared with the common rudder control system, this system has better control performance, stronger sea-situation-adapting ability, and much less energy consumption, etc. So this research has theory research meaning and engineering application value.