Research On Intelligent Control Of Ship Rolling Reduction Under Rotating Conditions

The ship's rotary motion is a typical tactical action in military ships.The advantages and disadvantages of the swing state have a great impact on the needs of military ship dodge attacks and obstacle avoidance.Due to the influence of environmental disturbances,the ship's roll will occur during the ship's revolving process,which poses a certain threat to the safety of the ship and the normal use of weapons and equipment.In this paper,the effects of environmental disturbance,speed and rudder angle on the ship's rotation performance and roll are studied in the process of ship rotation.The anti-rolling controller based on particle swarm optimization algorithm and the anti-rolling fuzzy condition under rotating condition are designed.The controller performs simulation analysis at the same time.The main contents of this article include the following:This paper mainly studies the following four parts:1.According to the research requirements of the thesis,the ship's rotary motion state is studied,and the ship's four-degree-of-freedom nonlinear motion model is built.The influence of nonlinear factors in the ship motion process is analyzed.The forces and moments of several typical ship motion control devices are substituted into the model.And build a ship motion simulation system.2.The effects of environmental disturbance on ship motion are studied,and the high-frequency interference force and drift wave force are decomposed separately.The ship motion simulation system is used to verify the effects of environmental disturbance,ship speed and the given rudder angle on the ship's rotary motion.3.A ship motion simulation system based on particle swarm optimization(PSO)is designed for ship motion simulation system.The index function is determined.The performance of the control system under different conditions such as environmental disturbance,ship speed and given rudder angle are discussed and verified.Shake the effect.4.The design of the ship anti-rolling fuzzy controller under the rotating condition is mainly for the problem of the fin angle saturation of the fin angle.The fuzzy rule table corresponding to the integral link and its membership function are designed to discuss and verify that the control system is rotating.Under the working conditions,the effects of environmental disturbance,given rudder angle on the roll and fin stabilizer under different conditions are compared with the control performance of the controller and algorithm.