vMES: Virtualization aware manufacturing execution system

The large scale emergence in the last decade of various cloud solutions, ranging from software-as-a-service (SaaS) based solutions for business process management and implementation to very sophisticated private cloud solutions capable of high performance computing (HPC) and efficient virtualization, constitute the building blocks for engineering the next generation of flexible enterprise systems that can respond with great agility to changes in their environment. These new technologies are adopted at a certain level by manufacturing enterprises in order to advance in a new era of mass customization where flexibility, scalability and agility are the differentiating factors. In this context, this paper introduces the virtualized manufacturing execution system (vMES), an intermediate layer in the manufacturing stack, and discusses the advantages and limitations offered by this approach for manufacturing enterprises. A classification of MES workloads based on the ISA-95 function model is presented, focusing on the virtualization techniques suitable for each workload, considering the algorithms and technologies used and the virtualization overhead. A pilot vMES implementation using a parallel process for smart resource provisioning and automatic scaling is also presented. The pilot implementation using six Adept robots and one IBM CloudBurst 2.1 private cloud and an ISA-95 based MES is described; the virtualization sequence is analyzed in several scenarios of resource workload collocation on physical cloud blades with and without perturbations.     

MES表面活性剂的工业化精制工艺

将α-磺基脂肪酸甲酯钠盐（MES）产品（含活性物质70%）在加热熔融的状态下滴加到50~55℃低沸点水溶性有机溶剂中，经冷却、结晶、过滤和干燥，得到高纯MES粉剂产品。考察了低沸点水溶性有机溶剂种类、原料与溶剂的投料质量比、冷却温度和结晶时间等工艺条件对产品回收率、活性物质量分数和过筛率的影响，得到了最佳纯化精制工艺：以甲醇为溶剂，5 kg MES，MES与溶剂的投料质量比为1：3，冷却温度为5℃，结晶时间为120 min，干燥时间60 min，干燥温度45℃，溶剂使用3次。本工艺条件下，所制得MES粉剂产品回收率大于98%，含活性物质量分数大于93.0%，产品在40℃密封保存12 h后，过0.850 mm筛孔的筛，过筛率达100%。     

MES在包钢一炼钢的初步应用

在冶金企业实现信息化的过程中,企业越来越强烈地意识到MES是一个承上启下的重要环节,是企业实现生产与经营活动有效集成、优化的桥梁和纽带,是提高企业竞争力的重要技术之一.文中论述了现代钢铁企业信息化建设的整体架构,介绍了包钢炼钢厂MES系统的实施情况,分析了国内MES系统的发展趋势.     

Enhanced methane fermentation of municipal sewage sludge by microbial electrochemical systems integrated with anaerobic digestion

Sewage sludge from a municipal wastewater treatment plant was fed into a microbial electrochemical system, combined with an anaerobic digester (MES-AD), for enhanced methane production and sludge stabilization. The effect of thermally pretreating the sewage sludge on MES-AD performance was investigated. These results were compared to those obtained from control operations, in which the sludge was not pretreated or MES integration was absent. The soluble chemical oxygen demand (SCOD) in the raw sewage sludge after pretreatment was 31% higher than the SCOD in untreated sludge (5804.85 mg/L vs. 4441.46 mg/mL). The methane yield and proportion of methane in biogas generated by the MES-AD were higher than those of the control systems, regardless of the pretreatment process. The maximum methane yield (0.28 L CH₄/g COD) and methane production (1139 mL) were obtained with the MES inoculated with pretreated sewage sludge. Methane yield and production with this system using pretreated sewage were 47% and 56% higher, respectively, than those of the control (0.19 L CH₄/g COD, 730 mL). Additionally, the maximum SCOD removal (89%) and current generation were obtained with the MES inoculated with a pretreated substrate. These results suggested that sewage sludge could be efficiently stabilized with enhanced methane production by synergistic combination of MES-AD system with pretreatment process.     

MBD模式下的数字化航空维修

文章提出了基于全三维的航空维修手册的新的维修信息表达思路,论证了三维的表达方式的诸多优点,提出了维修企业维修知识的应用及管理模式,以方便使用人员查找使用,提出了将制造企业使用的MES系统引入航空维修中,以解决维修过程中经常出现维修遗漏的问题。     

MES与化肥企业的两化融合

简要介绍了当前全国化肥行业“两化融合”的发展情况,结合赤天化股份有限公司MES系统（生产管理系统）项目的实施情况,探讨化肥企业实现两化融合的主要途径,以及化肥企业信息化发展的重点内容和主要方向。     

电子产品测试数据管理系统的设计与实现

为实现某航天电子产品测试车问的信息化管理,同企业内部MES实现信息共享,根据测试中心主要的业务职能,研制开发出一套适应企业需要的产品测试管理软件,实现了测试资源管理,测试任务调度与分配,测试结果分析、统计、查询、质量管理,数据保存,远程数据库管理等功能,优化了企业测试数据管理流程。     

集成的支持柔性生产的汽车制造执行软件系统架构研究与实践

结合上海汽车自主品牌建设需要,提出了集成的、支持柔性生产的汽车制造执行软件的系统架构设计方案,并成功应用于上海汽车动力总成等生产企业,有助于提高企业的生产效率和经济效益,有利于产业链协同发展,为中国汽车行业实施制造执行系统积累了可借鉴的经验。     

面向MES的柔性装配过程物料追踪方法研究

针对机械产品柔性装配过程中物料追踪困难的问题,文中首先进行了物料追踪要素分析,建立了工艺配置导向的产品追踪BOM扩展模型;在此基础上,重点研究了一种面向MES的物料追踪方法,即在MES相关子模块提供数据支持的前提下,建立一个工序级物料追踪的通用流程,以工序为基本单元对装配全过程进行物料跟踪;最后通过实例验证上述方法的实用性和可行性。     

MES在安钢中厚板热处理线的应用

阐述了MES在安钢中厚板热处理线实施的背景、目的和意义,介绍了系统的主要功能、在实际应用过程中遇到的问题和采取的处理措施,以及系统应用后的运行效果。