Simulation,Control And Monitoring Of Fishing Boat Propulsion Motors

At present,most domestic fishing boats still use traditional power systems as power output,such as the most widely used diesel engine.So far,the use of these traditional power sources for fishing boats has shown more and more shortcomings: one is too large,resulting in inflexible installation;the other is complex maintenance,poor maneuverability and poor comfort.Third,the overall economic benefits of fishing boats are not high.Therefore,replacing the traditional propulsion system on a fishing boat with an electric propulsion system can largely avoid these drawbacks.The propulsion motor is one of the core of the entire electric propulsion system,and its control performance will affect the entire system.This article uses a three-phase AC asynchronous motor as the propulsion motor of the whole system.This is a complex system,so it is difficult to obtain a good control effect.This article first established the mathematical model of AC asynchronous motor.In order to achieve good speed regulation requirements,vector control technology and direct torque control technology are used to adjust them,and then advanced digital simulation software(Matlab’s Simulink software)is used for modeling and simulation.After obtaining the simulation results,the analysis found that these two control technologies can make the motor obtain excellent dynamic speed regulation performance,but they have their own advantages and disadvantages.In order to obtain better speed control of asynchronous motor,this paper studies the intelligent control technology,namely: fuzzy control and BP neural network control.They have powerful processing capabilities for complex systems.Therefore,the two are combined with the PI controller to form a fuzzy PI controller and a BP neural network.Then let the PI controller and two intelligent controllers control the asynchronous motor,and finally simulate in Simulink.After obtaining these three control simulation results,it is found that when the parameters of the PI controller are not accurate,the BP neural network PI controller controls the motor best.Finally,in order to improve the maneuverability of the fishing vessel,this paper designs a marine automatic monitoring system to monitor the state of the propulsion motor in the operation of the fishing vessel.