The Modeling And Simulation Research On Codad

CODAD/CODAG is the important component of the naval ship power device. Through imitating experiment and put forward the push-system intelligence research, it could appropriately solve problems like security economics and field limitation of physics tests, and could extend the test equipments, such as expanding the scope and applied condition of simulation instruments.This thesis takes the combined-power device push-system, which is the rather complicated and promising among the main engine push-system, as basic research object, and launches to simulation experiments research through various methods software and modeling measures.This thesis reviews the basic types and principles of combined power device and domestic and foreign research development conditions at first. Then, it put forward the main research contents of this thesis on this foundation, that is, combined diesel device and system simulation and emulation research.On the foundation of CODAD physics experiment platform in this laboratory, the thesis raises 3 basic models to carry the experiment out, that is, two set diesel engines sole-work mode and two set diesel engines combined-work mode, and makes analysis of the combined diesel experiment platform's function implement.This thesis makes detailed structure, outside characteristic and model principle analysis of main part in CODAD experiments platform, including diesel engine, SSS clutch and combine diesel wheel gear box, speed-controller and eddy-current dynamometer etc. It also carries out detailed sub-system mathematics analysis aimed to devices like diesel engine, and tries to make the imitation data close to the realistic circumstance. At the same time, it launches research to control principle, and raises conceive of making use of Monotone-speed device.This thesis uses the MATLAB/SIMULINK software and AMESim software to establish the model. Fully considering the practical value of experiment imitation and actual data of physical device, it builds up model of each sub-system and whole system. In the process of building up model, extending the scope and emulation object of some devices, and analyzing the vibration characteristic of diesel engine simple through AMESim software. Based on whole consideration of model, it designs the combined diesel controller model to satisfy experiment shift under each model.The imitation experiment gets Responding Curve of diesel engine and exportation stalk, which includes diesel engine alone circulation mode, diesel engine combined circulation mode, diesel engine combined abnormal circulation mode and combined diesel and diesel shift mode, through imitation experiment established by MATLAB/SIMULINK software. Through theory analysis, the test result matches to the principle analysis, meantime, has verified that the controller has good control function and actual application value.The combined-power device experiment research, which is carried out by this thesis, is important content of ship main engine push-system intelligence research. Mathematics principle analysis, combined diesel controller design and simulation and emulation work in this thesis are quite important for push-system intelligence research.