Ship power station fault diagnosis method based on data fusion

Abstract

The invention provides a ship power station fault diagnosis method based on data fusion. The method comprises the steps of respectively adopting different data fusion algorithms on different levels of a fault diagnosis, using a plurality of sensors for detecting fault messages in multiple aspects, conducting stage treatment on multi-source messages, accurately and timely judging the state of a system, and giving the correct judgment on whether the system fails or not and the correct judgment on the fault mode. According to the ship power station fault diagnosis method based on the data fusion, intelligent monitor of a ship power station unit is effectively achieved, the reliability and safety of the operation of the unit are improved, and the phenomena of false alarms, misinformation and information missing are reduced. The sensors respectively monitor parameters of the fault messages and integrate the monitored data to conduct a first-stage fusion to detect layer data, a second-stage fusion is carried out on the data passing through the first-stage fusion, a third-stage fusion is carried out on the data passing through the second-stage fusion, the data after the three-stage fusion are matched with data inside a fault diagnosis knowledge database, and the fault diagnosis result is output.

Description

technical field [0001] The invention relates to the technical field of artificial intelligence fault diagnosis, in particular to a method for fault diagnosis of a ship power station based on data fusion. Background technique [0002] The ship power station is an important part of the ship and the core of the ship's power system. The reliable operation of the ship power station is of great significance to ensure the safety of the ship. It is responsible for providing continuous, reliable and high-quality electrical energy for the entire ship's electrical equipment. , once a major accident occurs, the consequences are quite serious. With the development of large-scale, high-speed and automated ships, higher requirements are placed on ship power stations. At present, there are two main fault diagnosis methods for ship units at home and abroad. : The first is vibration analysis; the second is to judge the failure of the unit based on the electrical parameters. However, since the...

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Problems solved by technology

[0002] The ship power station is an important part of the ship and the core of the ship's power system. The reliable operation of the ship power station is of great significance to ensure the safety of the ship. It is responsible for providing continuous, reliable and high-quality electrical energy for the entire ship's electrical equipment. , once a major accident occurs, the consequences are quite serious. With the development of large-scale, high-speed and automated ships, higher requirements are placed on ship power stations. At present, there are two main fault diagnosis methods for ship units at home and abroad. : The first is vibration analysis; the second is to judge the failure of the unit based on the electrical parameters. However, since the ship power station unit is a complex nonlinear system, its failure law is difficult to describe with a simple mathematical model. In fault diagnosis, it is difficult to establish a high-precision mathematical model

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