Research On The Drive Characteristic Of Ship Hydraulic Propulsion

This thesis is based on the Ministry of Communications' foundation research fund, called "the Basal Investigation of Integrated Hydraulic Drive in Vessel". After equipped with hydraulic drive in vessel, the drive characteristic will change. So surrounding the drive characteristic, the thesis is divided into four parts to expound.1. When the ship meets such condition that the load of the ship were changed, the ship sail down the wind, against the wind, in the storm, and so on, so put forward the regulations that how to manipulate and manage the machinery equipment on the sailing in the paper.2. In order to give some references to the design and manufacture of ship hydraulic drive, module formulas are proposed from the angle of engine management in this paper. Power transfer mode and control are introduced. In addition, selection principle between engine and hydraulic pump, hydraulic pump and hydraulic motor, hydraulic motor and propeller, are presented.3.Establishing the mathematical model for the hydraulic drive in vessel except the engine. In addition the Matlab\Simulink soft educes the simulation model, and the results are analyzed. The results indicate that the model is useful. 4.Based on conventional adjustor, fuzzy parameters self-tuning PID establishes duality continuous function between the parameters and windage as well as its variety with the application of fuzzy aggregate theory. The controller can also adjust the PID controller's parameters on-line. The result of simulation by the Matlab\Simulink indicates that the controller evidently improves the dynamic property of pump-control-motor system.