An Expert System and Establishment Method for Fault Diagnosis of Ship Electric Propulsion System

Abstract

The invention relates to a fault diagnostic expert system for a marine electrical propulsion system and an establishing method thereof and belongs to the technical field of artificial intelligence. According to the invention, an artificial neural network technology is introduced into the expert system design to establish the fault diagnostic expert system for the marine electrical propulsion system; the fault diagnostic expert system for the marine electrical propulsion system mainly comprises a man-machine interface module, a neural network module, a knowledge maintenance module, a data management module, a data acquisition module and a database. According to an operation principle and a typical fault mechanism of each equipment of the electrical propulsion system, the invention discloses a design method of a fault diagnosis knowledge base for the electrical propulsion system. The fault diagnostic expert system for the marine electrical propulsion system and the establishing method thereof have the advantage that the expert system structured by applying an artificial neural network solves the problems of knowledge acquisition bottleneck, knowledge maintenance difficulty, low reasoning speed and the like of a conventional expert system, and the practicality of the fault diagnostic expert system is improved.

Description

technical field [0001] The invention belongs to the technical field of artificial intelligence, in particular to an expert system for fault diagnosis of a ship electric propulsion system and a method for establishing it. Background technique [0002] With the rapid development of power electronics technology, frequency conversion motor manufacturing technology, motor control theory and computer control technology, the electric propulsion mode of ships in the world has developed rapidly, and the shipment rate of electric propulsion systems has also increased year by year. main direction. Since the ship electric propulsion system is a high-order, nonlinear, strongly coupled, time-varying complex system, to ensure the continuity and reliability of its work, improve the stable running time, and reduce the fault maintenance time, the ship electric propulsion system needs to be Fault diagnosis, timely discovery and troubleshooting, and automatic control of the whole ship. The kn...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems existing in the existing technology, to overcome the problems of traditional expert system knowledge acquisition difficulty, fuzzy knowledge processing difficulty and slow reasoning speed in the current ship electric propulsion system fault diagnosis, and to provide a ship electric propulsion system fault diagnosis expert system and method

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