A production line reliability improvement analysis method and system based on improved fmea
A production line and reliability technology, applied in the field of production line reliability analysis, can solve problems such as difficulty in measuring the change of failure mode cost, poor intuition of RPN value, and easy to ignore failure mode cost information.
Active Publication Date: 2020-02-21
GUANGDONG UNIV OF TECH
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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
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[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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The invention discloses a production line reliability improvement analysis method and system based on improved FMEA, comprising the following steps: step A, classifying occurrence degree O, detection degree D, maintenance cost M and production loss L; step B, according to The structure and functional characteristics of the production line are divided into components. In step C, the u-function of the production line, the u-function of each component and the u-function of each failure mode of each component are respectively obtained by using the universal generating function UGF, and then the UGF-based Production line comprehensive risk index ORI, step D, generate RPN mathematical model URPN based on the universal generator function UGF, step E, aim at maximizing the change of production line comprehensive risk index ORI, generate production line reliability corrective measures CA selection decision-making mathematical model, for The corrective actions CA corresponding to each failure mode are prioritized.
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,...
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IPC IPC(8): G06F30/20G06Q10/06G06Q50/04G06Q10/00G06F119/02
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