Research on Dynamic Characteristic of Unmanned Ship Propulsion System Based on Variable Shaft Angle
The strong dynamic load of will make the motion characteristics of shafting change rapidly and even lead to the loss of navigability of the ship. In order to solve the problem of engineering application of reliability assessment and control of ship propulsion system on heavy sea, the motion law between the driving shaft, the driven shaft and the shaft angle of the coupling is deduced by means of coordinate transformation method. Then, a simplified equivalent model of universal coupling with cross shaft was established to study the relationship between angle of shafting and the vibration characteristics of shafting. Finally, the anti-load characteristics of shafting were analyzed, the bearing capacity of the unmanned ship in harsh environment was improved by controlling the parameters such as shaft angle. It was concluded that the propulsion system of unmanned ship with adjustable universal coupling is very sensitive to impact loads, by controlling the shafting speed, the shaft angle and other parameters, the load-bearing capacity of the unmanned ship can be improved.