基于灰色理论的加工中心故障分析

doi:10.13229/j.cnki.jdxbgxb20211146

Abstract

Abstract:

Based on the traditional FMECA analysis due to the right of indicators and subjective determination of the probability of failure impact， an improved fault analysis method is proposed. Applying the least squares， adjacent matrix， Pagerank， statistical analysis， etc. to evaluate the probability of failure， fault impact， fault repair time， according to which the grey theory is introduced to construct the albino function of each indicator and calculate the evaluation value， form the index evaluation matrix， calculate the index weight based on entropy weighting method， apply the weighted average method to calculate and evaluate the failure risk. Take a domestic processing center as an example for method application， compared with traditional methods to verify the effectiveness of the proposed method.

Key words: machining center, fault analysis, gray theory, entropy right method, weighted average method

CLC Number:

TG659

Ying-zhi ZHANG,Sheng-dong HOU,Zhi-qiong WANG,Ren-hao DONG,Sheng YANG. Fault analysis of machining center based on gray theory[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(2): 433-438.

Figures/Tables 9

Fig.1

Fig.2

Fig.3

Table 1

Table 2

Parameter estimation and D test of interval between failures of machining center subsystem"

子系统序号	子系统	$α ?$	$β ?$	D检验
1	主轴系统	542.199	0.734	0.081
2	刀库系统	675.847	0.908	0.054
3	进给系统	538.965	0.754	0.053
4	数控系统	880.481	0.983	0.137
5	液压系统	126.219	0.917	0.091
6	电气系统	651.056	0.671	0.089
7	气动系统	1323.748	0.665	0.112
8	润滑系统	1101.403	0.903	0.147
9	冷却系统	756.518	0.676	0.136
10	排屑系统	546.853	0.638	0.159
11	防护系统	721.599	0.579	0.090

Table 2

Table 3

Table 4

Fig.4

Table 5

References 10

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子系统	综合风险值	排名	危害度数值	排名
主轴系统	3.872	1	0.000 134	5
刀库系统	3.608	2	0.000 289	2
进给系统	2.710	5	0.000 369	1
数控系统	2.350	7	0.000 060	7
液压系统	3.399	3	0.000 274	3
电气系统	2.565	6	0.000 103	6
气动系统	2.263	8	0.000 059	8
润滑系统	1.569	11	0.000 042	11
冷却系统	2.854	4	0.000 043	10
排屑系统	2.166	9	0.000 204	4
防护系统	1.992	10	0.000 051	9

Fault analysis of machining center based on gray theory

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