|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 数控磨床液压系统可靠性建模与评估显示文摘针对数控磨床液压系统故障率高、可靠性低的问题,连续跟踪并采集了液压系统的可靠性数据,利用不同的分布函数建立了液压系统的可靠性模型,提出了不同模型下对可靠性指标进行点估计和区间估计的方法。通过K-S检验、模型优选、评估指标与观测值的对比发现,液压系统的分布模型更适合于伽马分布,液压系统的可靠性指标MTBF为10345 h。所述的建模和评估方法可以用于液压系统的可靠性设计,也可以为数控磨床其他子系统的建模和评估提供参考。 | 刘勇军 杨勇 范晋伟 | 2016 | 液压与气动2016，40，9： | 8 |
| 2 | 数控磨床可靠性模型优选与分析显示文摘可靠性评估是可靠性工作的首要任务,为了避免在可靠性建模过程中的主观性,并取代繁琐的计算过程,首先采用四分位距法对故障数据进行离群值判定,进而使用MINITAB软件实现对有效故障数据的可靠性模型优选,最后通过线性相关性和K-S检验来验证该方法的准确性;同时,为了提高数控磨床可靠性水平,采用失效模式与影响分析、故障树分析方法对机床进行可靠性分析,并对关键故障因素提出有效的可靠性改善措施;以上方法在项目中均得到有效应用,对提升该机床可靠性水平及今后的可靠性设计改进有着重要作用。 | 罗静 陈一凡 张根保 段述明 | 2018 | 现代制造工程2018，，11： | 6 |
| 3 | 并行驮桥车液压顶升系统可靠性分析显示文摘利用驮桥车进行国内城市桥梁改造是一种新的施工方法,它能够在不使用大型起重机,而且不影响城市道路交通的情况下实现对立交桥梁整体的拆除和重新施工。针对桥梁顶升的施工工况,建立并行驮桥车液压顶升系统可靠性框图和数学模型,通过系统的可靠度曲线进行可靠性预测分析,搭建系统故障树模型对该故障树进行定性与定量分析,找出系统的脆弱环节,为提高系统可靠性提供理论措施,对工程实践具有指导意义。 | 赵静一 杨璐 戎少峰 郭洋 李万龙 | 2016 | 液压与气动2016，40，4： | 6 |
| 4 | Application of reliability-centered maintenance for productivity improvement of open pit mining equipment:Case study of Sungun Copper Mine显示文摘Equipment plays an important role in open pit mining industry and its cost competence at efficient operation and maintenance techniques centered on reliability can lead to significant cost reduction.The application of optimal maintenance process was investigated for minimizing the equipment breakdowns and downtimes in Sungun Copper Mine.It results in the improved efficiency and productivity of the equipment and lowered expenses as well as the increased profit margin.The field operating data of 10 trucks are used to estimate the failure and maintenance profile for each component,and modeling and simulation are accomplished by using reliability block diagram method.Trend analysis was then conducted to select proper probabilistic model for maintenance profile.Then reliability of the system was evaluated and importance of each component was computed by weighted importance measure method.This analysis led to identify the items with critical impact on availability of overall equipment in order to prioritize improvement decisions.Later,the availability of trucks was evaluated using Monte Carlo simulation and it is revealed that the uptime of the trucks is around 11000 h at 12000 operation hours.Finally,uncertainty analysis was performed to account for the uncertainty sources in data and models. | Amin Moniri Morad Mohammad Pourgol-Mohammad Javad Sattarvand | 2014 | Journal of Central South University2014，21，6： | 5 |
| 5 | Mine production index(MPI)-extension of OEE for bottleneck detection in mining显示文摘Although mining production depends on various equipments, significant amount of production loss can be attributed a specific equipment or fleet. Bottleneck is defined not only by production loss but also by our satisfaction from the equipment. The user satisfaction could be measured as machine effectiveness.Mining literatures on performance improvement and optimization of equipment operations assert importance of availability, utilization and production performance as key parameters. These three parameters are useful for evaluating effectiveness of equipment. Mine production index(MPI), which can represent the effect of these factors, has been applied for continuous operation in mining. MPI uses Fuzzy Delphi Analytical Hierarchy Process to determine importance of each three parameter for individual equipment. A case study in a Swedish open pit mine was done to evaluate the field application of MPI.The results reveal that crusher is the bottleneck equipment in studied mine. As a methodical approach,an algorithm which uses MPI and detects bottleneck in continuous mining operation has been proposed. | Amol Arun Lanke Seyed Hadi Hoseinie Behzad Ghodrati | 2016 | International Journal of Mining Science and Technology2016，26，5： | 2 |
| 6 | 基于Edgeworth级数法数控磨床电控系统可靠性指标研究显示文摘以数控磨床电控系统为研究对象,对其进行可靠性指标研究。首先引入可靠性指标体系,将可靠性指标结果概率化;然后利用Edgeworth级数法进行电控系统可靠性指标计算;接下来利用传统方法(最小二乘法)电控系统进行可靠性指标计算;最后以样本观察值为标准,分别对比两种方法在可靠度函数拟合和MTBF点估计值上的精确性。结果显示Edgeworth级数法较传统方法不仅计算结果更加精确,而且计算过程更加简便。研究结果已反馈给厂家并获得认可,对提升数控磨床整机的可靠性水平有重要意义。 | 范晋伟 刘会普 秦池 李伟华 | 2021 | 制造技术与机床2021，，11： | 2 |
| 7 | 实验用微型采煤机液压系统设计与动态特性仿真显示文摘在介绍实验用微型采煤机的基础上,对其液压系统进行了设计。建立了液压系统的数学模型和MATLAB/Simulink动态仿真模型,并进行了仿真分析。仿真结果表明:放大器增益系数、液压缸的负载大小和压缩总量对系统动态性能影响较大,PID控制器能够提升系统动态性能。研究结果为采煤机液压系统设计及优化提供了理论依据。 | 徐西华 张勇 刘泽 汪佳彪 | 2015 | 液压与气动2015，39，8： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员