Solid-liquid powered aircraft fault diagnosis system

Abstract

The invention discloses a solid-liquid powered aircraft fault diagnosis system which is mainly composed of a user operation interface, a solid-liquid powered aircraft expert knowledge base, and a diagnosis reasoning module. The user operation interface is mainly used for carrying out human-computer interaction and realizing fault diagnosis, knowledge base maintenance and fault tree view functions. The expert knowledge base stores fault experience knowledge, and collects fault causes and fault phenomena in the experiment process. The diagnosis reasoning module deduces the fault location and causes according to the fault phenomenon of an aircraft, and gives maintenance advices according to the expert knowledge base. The solid-liquid powered aircraft fault diagnosis system is mainly used for realizing the following functions: performing fault diagnosis on subsystems, giving maintenance advices and supporting result export; managing the expert knowledge base, and viewing, adding and deleting rules in a database; and viewing a fault tree, including the parent-child relationship between the nodes of the fault tree, the fault causes and maintenance advices.

Description

technical field [0001] The invention belongs to the field of fault diagnosis, and in particular relates to a fault diagnosis system under the expert knowledge base of solid-liquid power aircraft. Background technique [0002] The power system of the solid-liquid powered aircraft uses a solid-liquid powered rocket engine. The solid-liquid rocket engine is a rocket engine that uses solid and liquid propellants at the same time. A typical solid-liquid rocket engine uses liquid oxidizer and solid fuel, mainly composed of liquid The oxidant supply system and the engine main system are composed. Due to the structural characteristics of the solid-liquid rocket motor, it has some different characteristics from the solid or liquid rocket motor. The main advantages include: good safety, adjustable thrust and multiple starts, many types of propellants (especially non-toxic and harmless propellants), low cost, good stability of grains, and low temperature sensitivity. Therefore, it ha...

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Problems solved by technology

[0003] However, aerospace activities themselves have the characteristics of high cost and high risk. With the development of modern control theory, the scale and complexity of aircraft are increasing. In the research and development of solid-liquid powered aircraft, once a failure occurs, if it cannot be detected in time, If it is excluded, it will prolong the research and development cycle, affect the expected progress, cause huge economic losses, and even endanger personal safety.

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