Research Of The Fault Diagnosis Expert System Of Ship Electronic Power System

The electric power system is a very important part of the ship. With the spread of the ship electrical propulsion, it is also becoming more and more important. And many researches of it are under going. The fault diagnosis of it is one of them. In the fault diagnosis of the ship electric power system, the experiences of the repairman are very important. But the room of the ship is limited, so it is unavailable to diagnose the ship with the multipeple. So the expert system method is used in this article. And the main tasks of the article are as follows:(1) The research object, ship electric power system and its faults are analyzed systematically, including the reasons of the faults, the evolvement relationship of the faults, the line fault and the electrical equipment fault.(2) According to the features of the ship electric power system, frame expression and production expression are combined. And reliability threshold value of the precision, importance of the precision and the maintenance coefficient are added to the production expression.(3) Combining the features of the ship power electric system, the article puts forward that the line should be diagnosed first. And the diagnosis mechanism, the diagnosis procedure and the reasoning methods are also discussed in the article. Fuzzy reasoning is used and synthesis coefficient is introduced.(4) The ship electric power system is realized under the platform of Windows NT4.0, and the language Visual C++ is chosen.Finally, based on the work which has been finished, some points which can perfect the system in the future research are brought forward.