The Study Of Control Strategy Of Integrated Stabilization System Based On Energetic Optimum

Ship stabilization is always one of the most important parts in the ship control system and now it is faced with new challenges with the higher requirements about the ship stability.So far, to get better anti-rolling result, integrated stabilization control strategy is used by using several stabilizing unit together and the most typical one is the fin-tank stabilization system,which combines the advantages of both fin and anti-rolling tank and not only can get the perfect stabilizing efficiency, but also can achieve the full speed stabilization. Meanwhile, the fin as an active stabilizing device would spend a lot of energy and the energy crisis is becoming more and more serious, so it wil] be of great significance to get a way to achieve the desired anti-rolling result with consuming less energy.In fact, the ship on the sea needs to overcome the resistance by the propulsion system to go ahead, which has a close relationship to the ship speed. Furthermore, the passive tank can be considered as part of the ship hull, so the anti-rolling device is just the fin, on which the ship speed has great effect. Therefore, a suitable ship speed can be got, which can meet the system stabilization and save a lot of system energy.On basis of reading a large number of literatures, this paper analyzes the performance characteristics of the integrated stabilization system, demonstrates the feasibility of designing the system controller by using multi-objective genetic optimization algorithm, which can save system energy with the desired stabilization effect, then does the related simulation and analysis. In addition, by analyzing the relationship between the integrated stabilization efficiency and the speed, the relationship between the energy loss between the speed, a balancing speed can be got to meet both the requirements.In the first place, the mathematical model of the ship-fin-passive tank integrated stabilization system is established by analyzing both operating principle of fin and passive tank.In the second place, the feasibility of designing the controller of the integrated stabilization system in mathematical theory is tested by analyzing the characteristic of the multi-objective genetic optimization algorithm and the optimal object of the controller. Then simulates and analyzes.In the end, by analyzing the effect on the integrated stabilization efficiency from speed and the relationship between the main power of the ship and speed, make a study on that, a lot of system energy can be saved by reducing the ship speed appropriately with the almost invariably anti-rolling effect of the integrated stabilization system.