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Evaluation system and method of bulldozer blade assembly process quality based on fuzzy-association rules

A technology of quality evaluation and assembly technology, applied in fuzzy logic-based systems, database models, pulse technology, etc., can solve problems such as loss of assembly quality and achieve the effect of improving product quality

Active Publication Date: 2022-03-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To judge the quality of assembly, in order to prevent the loss of the ability to evaluate assembly quality due to the resignation of experts, it is necessary to accumulate the correlation between the actual assembly quality and the subjective evaluation of experts to form a knowledge base, and there is currently no similar applicable software

Method used

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  • Evaluation system and method of bulldozer blade assembly process quality based on fuzzy-association rules
  • Evaluation system and method of bulldozer blade assembly process quality based on fuzzy-association rules
  • Evaluation system and method of bulldozer blade assembly process quality based on fuzzy-association rules

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Embodiment 1

[0060] A method for evaluating the quality of bulldozer blade assembly process based on fuzzy-association rules, including the following steps:

[0061] The assembly test parameters are collected through the industrial Internet of Things data collection and testing equipment. The test parameters include data such as bolt torque, sprocket pressure value in the transmission assembly, and bearing clearance to form a parameter database.

[0062] Use big data analysis tools to determine the distribution characteristics of data such as bolt torque, sprocket pressure value and bearing clearance, and conduct big data analysis to obtain the distribution law of feature items. You can choose Weber distribution, chi-square distribution, normal distribution and F distribution for use To process the bolt torque, sprocket pressure value and inter-axle data, and calculate their respective probability density functions.

[0063] The probability density function of the Weibull distribution:

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Abstract

The invention discloses a bulldozer blade assembly process quality evaluation system and method based on fuzzy-association rules, comprising the following steps: collecting assembly test parameters, constructing a test parameter database; analyzing the parameter database, and determining the distribution form of test parameter data ;Use the membership function in fuzzy theory to analyze the parameters, and get the maximum threshold and minimum threshold of the test parameters; subjectively evaluate the quality of the assembled assembly, and build a Boolean database of test parameters; use the Apriori algorithm in the association rules to The Boolean database is analyzed to determine the support, promotion and interest of the abnormal assembly quality parameters of each process in the assembly process and the subjective evaluation results of the blade assembly quality, and generate a rule base. The bulldozer blade assembly process quality evaluation system is formed based on the rule base, which can be used to judge the blade assembly quality based on the assembly quality parameters on the assembly line.

Description

technical field [0001] The invention relates to the technical field of bulldozer blade assembly, in particular to a system and method for evaluating the quality of bulldozer blade assembly process based on fuzzy-association rules. Background technique [0002] The statements in this section merely mention the background technology related to the present invention and do not necessarily constitute the prior art. [0003] In the process of realizing the present invention, the inventor finds that there are following technical problems in the prior art: [0004] The blade is an important part of the bulldozer. The functionality and reliability of the bulldozer are closely related to the power of the blade. At present, domestic bulldozer manufacturing enterprises use many types of assembly lines. On the assembly and sub-assembly assembly lines, most of them use flexible conveyor lines to transport workpieces, and automatic assembly equipment is arranged on flexible conveyor lin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06N7/02G06F16/28
CPCG06Q10/06395G06N7/02G06F16/28
Inventor 闫伟张建勋宫涛樊庆琢白书战梅娜
Owner SHANDONG UNIV