Research On Control Algorithm Of Ship Integrated Stabilization System

According to the characteristics of fin and anti-rolling tank,the anti-rolling effect of fin and anti-rolling tank is fully realized.The integrated stabilization system can be a good roll reduction in any sea conditions.In this paper,through the related theory and control method of the integrated stabilization system in-depth analysis and research,the mathematical model of the integrated stabilization system is established.Using of intelligent control algorithm controls the integrated stabilization system.This main research contents of this paper are follows:Firstly,the force analysis was carried out on the ship roll motion.The ship roll motion principle and the control law are introduced.Due to the ship roll motion is nonlinear,which is generally difficult to solve.Therefore,the mathematical model of ship roll motion is linearized.The linear mathematical model of the integrated stabilization system is established,which includes fin system mathematical model,the anti-rolling tank system mathematical model and the ship integrated stabilization system mathematical model.Secondly,the ship navigation environment is complex and changeable.The anti-rolling effect is not obvious shortcomings in the actual navigation by using of the PID controller.Using variable parameters PID controller controls the integrated stabilization system.The control index of the integrated stabilization system is established.Simulations show that the system has good control effect in any sea conditions by using the variable parameters of PID controller,while the use of the traditional PID controller has better control effect only in specific sea conditionThirdly,according to the characteristics of ship motion,the chaotic characteristics of the integrated stabilization system are analyzed.The chaotic model of the integrated stabilization system is established.The piecewise quadratic function is as a generator to create the chaos.Choosing the non-positive Lyapunov index of corresponding to bifurcation parameter is as the nonlinear feedback controller of the integrated stabilization system chaos model.Then,the controller is applied to the nonlinear system to carry out the feedback operation.The chaotic behavior of the integrated stabilization system can be well controlled.Lastly,using chaos particle swarm algorithm optimizes the PID controller of the integrated stabilization system.Simulations show that the chaos particle swarm optimization algorithm is used to optimize PID controller,the number of iterations and optimal solution are improved.The control effect of the integrated stabilization system has also been significantly improved.