模糊物元在元动作单元可靠性分析中的应用

鞠萍华; 胡晓波; 冉琰; 陈资

doi:10.13433/j.cnki.1003-8728.20190330

模糊物元在元动作单元可靠性分析中的应用

doi: 10.13433/j.cnki.1003-8728.20190330

重庆大学机械传动国家重点实验室，重庆 400044

基金项目:

国家自然科学基金项目 51705048

国家自然科学基金项目 51835001

详细信息

作者简介:
鞠萍华(1974-), 副教授, 硕士生导师, 研究方向为机械设备故障诊断、机电产品可靠性，jupinghua@163.com

通讯作者:
冉琰, 讲师, ranyan@cqu.edu.cn

中图分类号: TH165
计量
- 文章访问数: 133
- HTML全文浏览量: 33
- PDF下载量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2019-08-26
- 刊出日期: 2021-01-01

Application of Fuzzy Matter-element Method in Reliability Analysis of Meta-action Unit

State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China

摘要

摘要: 动作是机电产品的基本运动单元，为了保障整机的可靠性，首先必须保障基本动作单元的可靠性，本文基于模糊物元法提出一种对产品最小动作单元进行可靠性分析的方法-基于模糊物元的元动作单元可靠性分析方法。首先按照“功能-运动-动作”对整机功能进行结构化分解得到最基本的元动作单元；通过模糊物元分析方法提取出相似的元动作单元，并构建出用于元动作单元可靠性分析的失效数据；然后选用三参数威布尔分布模型对失效数据建模和可靠性分析，并利用K-S检验方法对元动作单元的失效数据分布进行检验，以判断选用的分析模型是否合理。以某加工中心数控转台的回转油缸活塞移动元动作单元为例进行分析，验证了本文方法的合理性与可行性。结果表明该元动作单元的失效数据服从三参数威布尔分布模型。
- 可靠性 /
- 结构化分解 /
- 元动作单元 /
- 模糊物元 /
- 三参数威布尔分布 /
- K-S检验
Abstract: Action is the basic motion unit of electromechanical products, to ensure the reliability of the whole machine system, the reliability of the basic action unit must be guaranteed. Based on fuzzy matter-element method, a new method for reliability analysis of electromechanical product minimum action unit was proposed. Firstly, according to the structural decomposition mentality of "function-motion-action", the basic meta-action unit can be obtained by structuring decomposition the whole machine function. Then, the fuzzy matter-element analysis method was used to obtain the similar meta-action unit; the failure data of meta-action was constructed based on the similar meta-action, and a three-parameter Weibull distribution model was used to model the failure data. Finally, the failure data distribution of the meta-action unit was tested by Kolmogorov-Smirnov test method to judge whether the selected model was reasonable or not. The rotary cylinder piston moving meta-action of numerical control rotary table of some machining center was taken as an example to test reasonableness and effectiveness of the method. The results show that the failure data of meta-action obey the three-parameter Weibull distribution model, and the research of this paper is also the basis of the mapping between the reliability of the meta-action unit and the reliability of the whole machine.
- reliability analysis /
- structural decomposition /
- meta-action unit /
- fuzzy matter-element /
- Weibull distribution /
- Kolmogorov-Smirnov test

HTML全文

图 1 结构化分解模型

下载: 全尺寸图片幻灯片

图 2 原始元动作单元数据的构建流程

下载: 全尺寸图片幻灯片

图 3 某加工中心的FMA分解

下载: 全尺寸图片幻灯片

图 4 元动作单元比较特征

下载: 全尺寸图片幻灯片

表 1 各个特征的权重

指标	C₁	C₂	C₃	C₄	C₅	C₆	C₇	C₈	C₉	C₁₀	C₁₁	C₁₂	C₁₃	C₁₄	C₁₅
w_j	0.0625	0.0714	0.0285	0.0619	0.0217	0.0654	0.0726	0.0752	0.0798	0.0381	0.1042	0.1103	0.1181	0.0497	0.0405

下载: 导出CSV

表 2 失效数据

序号i	1	2	3	4	5	6	7	8
失效时间/h	113.6	129.8	163.4	218.2	249.6	343.7	366.5	422.9

下载: 导出CSV

表 3 参数估计值

γ	β	η
113.6	1.9236	163.74

下载: 导出CSV

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