The Modeling And Simulation Of Marine Controllable Pitch Propeller Propulsion Plant And Its Control System

Controllable pitch propeller marine propulsion plant has many advantages compared to fixed pitch propeller.It is applied on each middle and small scale ships. Therefore,establishment of its mathematical model has vital significance in the project domain.In earlier period work foundation,by using the multi-modeling methods of the filling-and-emptying mathematic method,the trial formula method and trial datum revision method and so on,the model of the marine diesel engine for MAN B&W 6S35MC and N40 exhaust turbine supercharger are established.By using the VC++6.0 programming language,this thesis realizes calculating the programming precisely of the mathematical model.The simulation and the experiment contrast indicating:Using the mathematical method is correct;The model can reflect correctly the stable state and the dynamic characteristic of the actual system.It is key and difficult content to controllable pitch propeller characteristic description and the computation in the project.By complexity of the controllable pitch propeller characteristic,the propeller thrust and the torque are unable with the analysis formula to express.The propeller the water test characteristic curve makes the function generator in this thesis to establishing the thrust force and the torque computation mathematical model.Considered influence of the controllable pitch propeller hydraulic servo system to propulsion system.The thesis gives the simplification transfer function model of the controllable pitch propeller hydraulic servo system.Alpha 2000 the PCS propulsion control system is the controllable pitch propeller control system of MAN B&W 6S35MC researching and developing in recent years.In earlier period work foundation,accomplishment following work:This thesis has designed Alpha 2000 the PCS propulsion controlled variable database,and completed software design and programming of the parameter display,the inquiry and the revision;established mathematical model of the DGS8800e, consummated logical control mathematical model of MAN B&W the MC pneumatic manoeuvre system,realized dynamic display panel of the controllable pitch propeller.The marine controllable pitch propeller propulsion plant and its control system can be applied to the development and simulated training for the marine engine room.It also can be applied to analyze and predict as well as design the dynamic characteristics under the unsteady state of the controllable pitch propeller propulsion system.Moreover, it can be applied to provide the basal simulated environment for the design and optimization of the controllable pitch propeller propulsion plant and its control system.