A method for encoding faults in communication of a control system

By classifying aircraft engine failures into safety impact levels and subsystems, and using coding rules to generate unique fault codes, the problems of high system familiarity requirements for maintenance personnel and non-standard fault information descriptions have been solved, achieving rapid fault location and standardized coding.

CN122593218APending Publication Date: 2026-08-18CHINA AERONAUTICAL CONTROL SYST RES INST
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Patent Information

Application Number
CN202610656620.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-13
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

When locating faults in aero-engine systems, maintenance personnel are required to have a high level of familiarity with the system, and the description of fault information is often not standardized, resulting in high communication costs and low efficiency.

Method used

Engine faults are classified according to safety impact level and subsystem, and a unique fault code is generated using a predetermined coding rule. The code includes a code bit that represents the safety impact level category and subsystem, and the fault code and the time of first occurrence are stored.

Benefits of technology

It facilitates maintenance personnel in quickly finding maintenance manuals, rapidly locating faults, reducing the maintenance difficulty of different engine models, and improving the standardization of fault coding.

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Abstract

The application discloses a fault coding method for communication of a control system, and is applied to a full authority digital electronic controller (FADEC) of an aero-engine, and comprises the following steps: dividing engine faults into a plurality of predetermined safety influence level categories according to the influence degree of the engine faults on flight safety; meanwhile, dividing an engine system into a plurality of subsystems according to the physical or functional composition of the engine system; for each fault, generating a unique fault code according to a predetermined coding rule according to the safety influence level category and the subsystem to which the fault belongs; in the coding rule, at least one part of code bits of the fault code is used for representing the safety influence level category, and another part of code bits is used for representing the subsystem; when the fault occurs for the first time, the generated fault code is stored in association with the first occurrence time of the fault; and the application is favorable for unifying the aero-engine fault coding specification.
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