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Production line reliability improvement analysis method and system based on improved FMEA

An analysis method and production line technology, applied in manufacturing computing systems, resources, instruments, etc., can solve problems such as easily ignoring failure mode cost information, poor RPN value intuition, and difficulty in measuring failure mode cost changes.

Active Publication Date: 2019-09-20
GUANGDONG UNIV OF TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional RPN is also easy to ignore the cost information corresponding to the failure mode, and it is difficult to measure the specific cost changes caused by the occurrence of the failure mode
Traditional RPN values ​​are less intuitive in some physical sense

Method used

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  • Production line reliability improvement analysis method and system based on improved FMEA
  • Production line reliability improvement analysis method and system based on improved FMEA
  • Production line reliability improvement analysis method and system based on improved FMEA

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Embodiment Construction

[0074] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0075] The production line reliability improvement analysis method based on the improved FMEA of the present embodiment, such as figure 2 shown, including the following steps:

[0076] Step A, classify the occurrence degree O, detection degree D, maintenance cost M and production loss L, the occurrence degree O is the occurrence probability or frequency of the failure mode, and the detection degree D is the detection difficulty of the failure mode, The maintenance cost M is the fixed cost of component failure repair, and the production loss L is the production loss of the system within the maintenance time;

[0077] Step B, divide the components according to the structure and functional characteristics of the production line, count the failure modes of all components, and evaluate the occurrence l...

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Abstract

The invention discloses a production line reliability improvement analysis method and system based on improved FMEA. The method comprises the following steps of A, grading the occurrence degree O, the detection degree D, the maintenance cost M and the production loss L; B, dividing the parts according to the structure and the functional characteristics of the production line; C, respectively obtaining a u function of the production line, a u function of each component and a u function of each fault mode of each component by utilizing a universal generation function UGF, further generating a production line comprehensive risk index ORI based on the UGF; and D, generating an RPN mathematical model URPN based on a universal generation function UGF; and E, generating a production line reliability correction measure CA selection decision mathematical model by taking change maximization of a production line comprehensive risk index ORI as a target, and carrying out priority ranking on the correction measure CA corresponding to each fault mode.

Description

technical field [0001] The invention relates to the technical field of production line reliability analysis, in particular to a production line reliability improvement analysis method and system based on improved FMEA. Background technique [0002] Failure Mode and Effect Analysis (FMEA) is to analyze the subsystems and parts that make up the product, and each process that makes up the process one by one in the product design and process design stages, find out all potential failure modes, and analyze their possible failure modes. Consequences, thereby taking necessary measures in advance to improve the quality and reliability of a systematic activity of the product. The existing FMEA analysis adopts the method of calculating the risk priority number (Risk Priority Number, RPN) to determine the priority of the failure mode, and it is considered that the failure mode with a higher RPN value takes corrective action (Corrective Action, CA) first. However, in actual production,...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06Q10/06G06Q50/04G06Q10/00
CPCG06Q10/0635G06Q10/06393G06Q10/20G06Q50/04G06F30/20Y02P90/30
Inventor 张定黄铭溪刘强严都喜袁涛
Owner GUANGDONG UNIV OF TECH