鲁棒模型预测控制系统的评估基准

在控制系统的性能评估中,基准的设计是个重要问题。将基本设计极限理论推广到模型预测控制系统(MPC),建立性能评估基准。直接考虑多输入多输出系统的频域扰动,建立输出反馈鲁棒模型预测控制器。此控制器仅仅依赖于过程参数,也是令闭环系统达到控制性能极限的基准控制器。建立了用于评估的性能指标,提出基于此基准的性能评估程序,用以评价其他模型预测控制系统的性能。数学算例证实了这一评估程序的有效性。     

大型臭氧发生器实现产业化

日前,青岛国林实业股份有限公司的120kg·h-1大型臭氧发生器设备研制及产业化通过评估,其各项性能指标达到国际领先水平,标志着我国臭氧装备制造技术取得突破。我国拥有完全自主知识产权120kg·h-1大型臭氧发生器的研发制造技术,是世界上3个掌握此项制造技术     

变换炉的制造与检验

介绍了焦炉气制甲醇装置中关键设备变换炉的制造与检验方法。阐述了设备材料需要控制的性能指标、设备筒体和封头堆焊等关键部件的制造及检验的要求。     

液压过滤器的选择与设计

液压过滤器使用性能的优劣,完全取决于设计与制造,其性能指标的设计应充分满足实际使用要求。设计指标的合理和制造工艺的完善,是过滤器制造的关键。     

纤维增强汽车V带的研制

主要介绍汽车Ｖ带的结构，制造用设备，骨架材料、胶料和制造工艺等、该Ｖ带经全国胶带监测中心测试，各项性能指标符合国家标准。     

EDI装置关键制造技术课题通过验收

由国家海洋局杭州水处理技术研究开发中心承担的科技部攻关项目“EDI装置关键制造技术”课题于2 0 0 2年 1 2月 2 7日通过专家组验收。研制出的 EDI装置的性能指标全部达到或超过考核指标 ,部分指标达到国际领先水平。配置了规模化生产所需的设备和模具 ,具备了产业化的生产条件。国产工业化 EDI装置的研制成功 ,必将丰富我国膜分离技术和装置的种类 ,进一步缩短我国膜分离技术与国际先进水平的差距 ,增强我国在水处理技术领域的国际竞争力。EDI装置关键制造技术课题通过验收@黄宝能     

半导体制冷元器件性能参数测试与研究

本文根据半导体制冷元器件的特性优势，研发并设计了一种以半导体制冷元器件为基准的性能参数检测设备，利用该设备对规格Tec1-12706t半导线制冷元器件的制冷时间与散热量进行测试，通过测试数据分析和理论计算结果推导出了半导体元器件的冷热端温度及有关性能参数。并对测试数据做出了校正，校正结果进一步显示了半导体元器件的性能指标与年平均气温间的因果关系。该装置对半导体制冷元器件的性能参数检测结果数量级具备一定的准确度，由此可以为半导体性能指标检测的研究提供重要依据。     

废水分解塔的制造工艺技术

介绍了三聚氰胺核心设备废水分解塔的设备结构及技术参数,并将设备制造关键工艺成形、焊接、热处理等各项工艺性评定所确定的技术参数和操作规范应用于设备实际加工制造中,使设备主要零部件的成形、焊接、热处理及无损检测技术要求等每个关键工艺环节都能严格遵守相应评定所确定的技术参数和操作规范,整个设备制造加工质量稳定,质量过程受控,顺利完成废水分解塔的制造任务。     

煤化工工程总承包项目中转动设备质量管理

通过总结转动设备的验收经验,介绍了转动设备关键质量检验点和设备制造检验过程中的关键事项.通过对制造阶段的充分把控,可以有效保证转动设备的质量,为项目开车及后期稳定运行提供保障,并在一定程度上降低运行期间的设备维护成本.     

连续聚合法生产高粘度PA6

介绍连续聚合法生产高粘度ＰＡ６的聚合工艺，特点及产品性能指标，并介绍了关键生产设备的特点及作用。     

Coordinating and Evaluating of Multiple Key Performance Indicators for Manufacturing Equipment: Case Study of Distillation Column

Manufacturing equipment takes the task of operation and directly effects on the manufacturing process. One single Key Performance Indicator (KPI) is mainly employed to evaluate equipment inmost studies, neither integrating the KPIs into a completed evaluation system nor considering the impact and conflict among KPIs. In this paper, a KPI evaluation architecture is presented to define and analyze KPIs, and then a common structure for KPI to obtain the KPI set of manufacturing equipment is introduced. An available multi-KPI coordination model is proposed to discern and balance the relationship amongmulti-KPI. Finally, a case study is introduced to illustrate the applicability of the coordination model by using multi-objective optimization strategy and an efficient solution is obtained.     

橡胶机械在胶磁制造中的应用

介绍了胶磁产品的制造工艺,以及制造设备(包括混料设备、破碎机、出片机、卷取机、压延机等)的特点和要求。总结出胶磁制造设备和普通橡胶设备的主要区别在于设备表面耐磨硬化处理要求更高。     

浅谈益阳橡机虚拟化服务器及虚拟化桌面建设

近几年,国内云计算市场持续保持着高速增长的态势.中国信通院发布的《2016-2022年中国云计算行业深度调研与未来发展趋势报告》指出,中国的云计算市场持续高速增长,已经有大量的制造行业引入云计算技术到企业的核心业务系统,帮忙企业实现信息化的迅速发展[1].随着益阳橡机业务快速发展,对于研发设计团队的扩充需求也会越来越高...     

Structural modeling and analysis of FRP composite product subsystems—A systems approach

This study derives a new mathematical model aimed to consider virtual design and manufacturing procedures for developing highly competitive, complex geometry composite products for various engineering applications. The fiber‐reinforced polymer (FRP) composite industry faces several critical issues right from selection (of product, process, equipment, tooling, materials) to manufacturing the final products by meeting several design criteria and customer requirements. An attempt has been made in this article to identify different subsystems and other constituents of five main systems–resin system, reinforcement system, process equipment, tooling system, and product design of total composite product system. Intermediate processes, alternative designs, process sequence, technological changes, chemical reactions, and other performance affecting parameters have been discussed. Graph theoretical models, variable permanent adjacency matrix models, and permanent functions of these systems based on graph theory–matrix algebra–permanent function methodology are developed. Analytical tests for structural analysis of composite product system are derived to select optimum constituents in each of these five systems of composite product. Coefficient of similarity and dissimilarity are useful aid to take right decision between alternative solutions. Permanent function is a unique representation and to be used by composite industry for coding, evaluation, comparison, ranking, and optimum selection. Structural models are useful for basic understanding of complete composite product system, leading to right decisions for manufacturing and business strategies. Step‐by‐step procedure is developed to assist composite industry to implement the proposed method in a right way. Usefulness of the proposed methodology to composite industry is also presented. POLYM. COMPOS., 27:681–699, 2006. © 2006 Society of Plastics Engineers     

新墙材制造工艺与装备发展探讨

介绍了我国新型墙材制造工艺技术与装备的现状,分析探讨了新型墙材制造工艺与装备的发展趋势;并对几种新兴制造技术作了细致阐述。     

A Novel Mechanism for TRF of Plant-wide Material Flows in Process Industry MES

This paper is standing on the recent viewpoint originated from relevant industrial practices that well or-ganized tracing, representing and feedback （TRF） mechanism of material-flow information is crucial for system utility and usability of manufacturing execution systems （MES）, essentially, for activities on the side of multi-level decision making and optimization mainly in the planning and scheduling. In this paper, we investigate a key issue emphasized on a route of multi-level information evolution on the side of large-scale feedback, where material-flow states could evolve from the measuring data （local states） to networked event-type information cells （global states） and consequently to the key performance indicators （KPI） type information （gross states）. Importantly, with adapta-bilities to frequent structural dynamics residing in running material flows, this evolving route should be modeled as a suit of sophisticated mechanism for large-scale dynamic states tracking and representing so as to upgrade accu-racy and usability of the feedback information in MES. To clarify inherent complexities of this evolving route, the investigated issue is demonstrated from extended process systems engineering （PSE） point of view, and the TRF principles of the multi-level feedback information （states） are highlighted under the multi-scale methodology. As the main contribution, a novel mechanism called TRF modeling mechanism is introduced.     

水泥基复合材料3D可打印性的量化、优化及标准化

水泥基复合材料的3D可打印性与打印工艺的协调兼容是无模快速建造成型的关键。然而,3D打印原材料和配合比多样,打印设备不同,成型工艺各异,且3D可打印性的量化与评估尚未形成统一标准,为该技术的工程应用和推广带来不便。本文分析了3D可打印性的影响因素,综述了混凝土3D可打印性的量化评价方法,总结分析了六种3D可打印性的优化提升方法,并给出了标准化推广的建议,对混凝土3D打印技术的工程应用具有实践指导价值。     

Dual gradient direct ink writing of functional geopolymer-based carbonyl-iron/graphene composites for adjustable broadband microwave absorption

As a novel type of moulding technology, additive manufacturing (AM) can realise the rapid manufacturing of complex structures. This research applied dual gradient direct ink writing (DGDIW) with in-situ dispersion to fabricate multi-materials in an extensive gradient range. Functionally graded materials (FGM) have emerged as intelligent composites with peculiar advantages in wave absorption applications. An FGM geopolymer containing carbonyl-iron and graphene (CIG) powders with graded structure was successfully fabricated to enhance the wave-absorbing property via DGDIW three-dimensional (3D) printing. Compared with the non-structured homogeneous geopolymer composites, FGM composites performed more consecutive and effective absorbing from 2 to 18 GHz, resulting in a significantly increased electromagnetic (EM) wave absorption property. Combining with the gradient content of CIG fillers, the impedance matching and electromagnetic attenuation of 3D printed gradient lattice structure geopolymer composites has been significantly improved, the minimum reflection loss can reach ?46.47 dB at 17.58 GHz with a broadband absorption of 14.62 GHz (3.38–18.00 GHz). The results provided a promising strategy for fabricating functional graded ceramic composites with great potential as an absorption device in wave absorption applications, especially in protective structures, radiation-proof equipment/architecture, and defence constructions.     

Techno-economic analysis of dynamic,end-to-end optimal pharmaceutical campaign manufacturing using PharmaPy

Increased interest in the pharmaceutical industry to transition from batch to continuouos manufacturing motivates the use of digital frameworks that allow systematic comparison of candidate process configurations. This article evaluates the technical and economic feasibility of different end-to-end optimal process configurations, namely, batch, hybrid and continuous, for small-scale manufacturing of an active pharmaceutical ingredient. Production campaigns were analyzed for those configurations containing continuous equipment, where significant start-up effects are expected given the relatively short campaign times considered. Hybrid operating mode was found to be the most attractive process configuration at intermediate and large annual production targets, which stems from combining continuous reactors and semi-batch vaporization equipment. Continuous operation was found to be more costly, due to long stabilization times of continuous crystallization, and thermodynamic limitations of flash vaporization. Our work reveals the benefits of systematic digital evaluation of process configurations that operate under feasible conditions and compliant product quality attributes.     

废旧塑料再生利用项目环境影响评价技术探讨

我国塑料回收利用主要还是集中在简单的再生颗粒制造方式,清洗技术和设备还比较落后、管理不当对环境产生严重污染。本文通过环境影响评价工作来对此类项目进行分析评价为环保部门和企业管理提供实践经验,最大限度降低项目建设对周围环境的不利影响。为同类项目的环境保护工作提供参考依据,对今后废旧塑料再生利用项目的环境影响评价起到指导作用。