Hou Yue

Intelligent Decision Support System of Ship Unsinkability Design in the First Design Stage

If the ship is damaged, we should try our best to guarantee its unsinkability. Ship unsinkability is one of the most important aspects of ship survivability. The intelligent decision support system of ship unsinkability design in the first design stage is founded in this paper. The intelligent decision support system consists of two main functions. One is manual ship unsinkability design and the other is intelligent ship unsinkability design which is introduced in detail in this paper. The survival probability calculation model, ship unsinkability mathematic optimization model and intelligent optimization arithmetic corresponding to the mathematic optimization model are founded in the intelligent decision support system. The gene arithmetic is improved in the intelligent optimization arithmetic. The gene sequence is defined based on the tradition gene definition. The chromosome defined in this paper can be considered as a special chromosome of which gene sequence is ordered. At last, design cases are given to explicate how the intelligent system helps in ship unsinkability design jobs.

Ship cabin damage mode identification arithmetic base on seawater ingress process

The seawater ingress sensors in cabins will be damaged when the ship is attacked on sea. And it is difficult for damage control monitors to accept the cabin flooding signals, so it is uneasy to judge which cabins are flooded for crews. Accordingly, it is necessary to set up an arithmetic to identify the flooded cabins, which only depends on ship poise signals in flooding process but not on the cabin flooding signals. Firstly, the generation arithmetic of the ships damage modes is set up by the width priority searching and back tracking method. Secondly, the identification course is analyzed, and the identification model of cabin damage modes is set up by gray relation theory associating with the above generation arithmetic. Lastly, one ship damage mode is identified, and its calculation result shows that the identification arithmetic is accurate.

Simulation Computation Study of the Damaged Ship Subjected to Underwater Explosion

The non-linearity rolling motion model is established when the damaged ship is subjected to underwater explosion, which not only describes the explosion effect, but also describes water ingress motion from the damaged crevasse. Then the motion equation is solved by Runge-Kutta iterative method in applying computer program environment. It is helpful to provide theory method for anti-flooding of ship.

Design of intelligent ship firemain reconfiguration system

The design of ship firemain intelligent reconfiguration system, which can detect, locate and isolate damage of ship firemain intelligently is given. The graph model and the math model of ship firemain system is described firstly; Then a new sort of diagnostic algorithms for intelligent rupture detection and location in firemain system is founded, which contains the function of error correction for rupture signal; At last the intelligent reconfiguration system of firemain system is founded and a operational instance is given to explain its advantage.