Visual Simulation And Application Research On Mainprorulsion Device And Control System Of Controllable Pitch Propeller Ship

Compared with the fixed pitch propeller propulsion device,the CPP propulsion device has many advantages.Therefore,the CPP propulsion device has been widely used in various types of ships.Practice has proved that more than 80%of the causes of ship accidents are caused by human factors.Therefore,it is an important content of marine engineering management to develop a marine engine simulation training system and use the system to realize the professional technical training of crew members and improve their management level.In the existing marine engine simulation training system,the simulation model of ship propulsion device is mainly fixed pitch propeller propulsion device,and the professional training content in CPP propulsion device is too few.Therefore,it is urgent to research and develop the simulation training system of CPP propulsion device.In view of the above problems,this paper studies the modeling and visual simulation of the CPP propulsion device and its control unit.Firstly,considering the real-time requirement of training simulation,the cyclic average method is adopted to establish man The mathematical model of 6S35MC diesel engine is developed by VC++6.0 software.The steady-state calculation results are obtained by taking the speed,scavenging temperature,scavenging pressure and throttle scale as input.The results show that the steady-state error is less than 5%,and the steady-state characteristics of the model can meet the training requirements.In order to further verify the model,the model was predicted and calculated by changing the parameters of scavenging temperature and scavenging pressure,and the calculation results were in line with the change law of diesel engine,which further verified the correctness of the model.Secondly,on the basis of the above research,in order to further study the steady and dynamic characteristics of diesel engine and CPP propulsion device,the simplified models of exhaust gas turbocharger,DMS2100i engine remote control system,CPP,ship engine propeller propulsion equation and main engine pneumatic control system are established respectively.The simulation program is compiled by VC++,and the set speed and pitch can be used to calculate the engine speed and pitch as input,the steady-state and dynamic simulation results under different working conditions are given and compared with the ship trial data.The results show that the steady-state error is less than 5%,and the dynamic characteristics can correctly reflect the change law of the CPP propulsion device.Finally,the visual operation interface of the system is designed according to the composition of each link of the CPP propulsion device and the layout of the console.The visual operation interface programs of the car clock,DMS2100i main engine remote control system,EGS2200 electronic governor,DPS2100 safety protection and main engine pneumatic control system are compiled by VC++6.0.The simulation model and visual operation interface are integrated into the existing marine simulation training platform system.The interface operation test shows that the interface runs smoothly and can be automatically adjusted according to different resolutions,which provides support for the further development of CPP Propulsion Device Simulation Training System.In addition,in order to meet the needs of automatic evaluation of training system,the automatic evaluation algorithm based on end detection is studied.according to the operational requirements of CPP propulsion system in the seafarer competency examination and evaluation outline,the operation test questions are compiled and loaded into the engine integrated simulation platform.The feasibility of the automatic scoring algorithm is verified by the test results.