Fault isolation and positioning method for complex system

A fault isolation and complex system technology, applied in the direction of reasoning methods, data processing applications, instruments, etc., can solve problems such as failure to obtain effective fault indication data, test design implementation is difficult to achieve expected goals, etc., to achieve a wide range of applications Effect

Pending Publication Date: 2020-04-10
AVIC SHANGHAI AERONAUTICAL MEASUREMENT CONTROLLING RES INST
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Problems solved by technology

Even if the corresponding relationship is established, due to the limitations of technology and environment, the implementatio

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  • Fault isolation and positioning method for complex system
  • Fault isolation and positioning method for complex system
  • Fault isolation and positioning method for complex system

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Faults in the complex system will affect the function and performance of the complex system, and ultimately reflected in the deviation of the complex system's own working status, operating parameters and other information. This embodiment is based on this idea and does not use traditional failure modes for direct monitoring way, providing a fault isolation and localization method for complex systems, see figure 1 shown, including the following steps:

[0022] Step 1: Structurally decompose the complex system to form subsystems or components according to the functions and performance of the complex system, and determine the quantitative evaluation indicators of the functions and performance of the subsystems or components.

[0023] Such as figure 2 As shown, using the clear definition of the function and performance of the complex sys...

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Abstract

The invention discloses a fault isolation and positioning method for a complex system. The method comprises the following steps: carrying out the structural decomposition of a complex system accordingto the functions and performances of the complex system, forming subsystems or parts, and determining the function and performance quantitative evaluation indexes of the subsystems or parts; determining a quantized parameter deviation tolerance for the function and performance of the subsystems or parts; determining a fault transmission coupling factor according to a function transmission path between the subsystems or parts; analyzing the function and performance quantitative evaluation indexes, the fault transmission coupling factor, the working state and operation parameters in the operation process of the system, and determining fault isolation positioning parameters; realizing fault isolation and fault positioning through data analysis and logical reasoning of fault isolation positioning parameters. The method is a very effective method for improving the maintainability of the system, and the fault detection capability and the fault isolation capability of the system can be wellsolved.

Description

technical field [0001] The invention belongs to the field of equipment maintainability, and in particular relates to a fault isolation and positioning method for complex systems. Background technique [0002] With the continuous development of technology, the performance of equipment is getting higher and higher, followed by the highly integrated and complex cross-linking of various systems, which brings difficulties to fault isolation and fault location after equipment failure, resulting in fault diagnosis man-hours and average The repair time is too long, which will affect the use of equipment and the ability to perform tasks. Therefore, preventing and reducing equipment failures, improving fault diagnosis and fault location capabilities, and reducing maintenance costs have become current research hotspots. [0003] The fault diagnosis of equipment is mostly based on the fault mode detection method. Through the analysis of the fault mode, the corresponding relationship bet...

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Application Information

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IPC IPC(8): G06Q10/00G06Q10/06G06N5/04
CPCG06Q10/20G06Q10/06393G06N5/046
Inventor 李兴旺汪慧云
Owner AVIC SHANGHAI AERONAUTICAL MEASUREMENT CONTROLLING RES INST
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