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英语原文共 7 页, 基于低成本开放式硬件的自动控制教学平台 A. Soriano, L. Maracute;ın, M. Vallacute;es, A. Valera, P. Albertos 系统工程与控制系,控制系统与工业计算研究所,巴伦西亚政治大学卡米诺德维拉, E-46022瓦伦西亚,西班牙 电子邮件:{ansovi,leomarpa,mvalles,giuprog,pedro}@ai2.upv.es。 摘要:自动控制以及编程介绍,逐渐成为年轻一代工科学生的主要教学科目。 为此,为实验室教学提供一个能促进学生积极体验课堂理论概念的实验平台成为一个关键。 在此之前,在这种科目中,实验室工作时的唯一选择是使用市面上出售的封闭式平台,但现在由于技术的进步,许多开放的硬件选项都支持标准化的、直观的编程语言。 为了提供自动控制入门课程的多学科低成本开放平台,本文提出了一种易于编程的开源教育平台,由具有机
英语原文共 9 页, 为了智能制造过程而被共享和面向服务的CNC加工系统 摘要:为了提高效率,减少耗费,确保有效的质量,研究者对CNC加工已经集中于虚拟加工机床、云制造、无线加工。然而,在不同的系统之间信息系统的低水平是一个普遍的不利条件。在这个论文中,一个带有数据评估模块的的建立是为了加工数据库的完整和升级。一个在线监控系统基于事情和多传感器感知到的大量的信号特征的网络去感知在CNC加工过程中的状态。一个高效率和绿色最优化参数制造系统执行面向服务制造。这个智能的CNC加工系统应用于产品。 CNC加工数据库在不同的系统之间高效分享和管理加工数据。通过实时获取加速和噪声,在线监控系统的可预测准确性可达到98.8%。高效和绿色加工参数最优化系统使原始加工参数最优化和计算表明最优
英语原文共 7 页, 部署问题: 配置应用程序服务器性能和可靠性 Mukund Raghavachari Darrell Reimer Robert D. Johnson 国际商业机器公司 T.J. 沃森研究中心 19 天际线驱动, 霍桑, 纽约 10532 raghavac@us.ibm.com 摘要 J2EE的框架旨在通过处理大量并发性,事务和持久性管理的复杂性来简化开发企业应用程序的过程。 支持这样的框架的应用服务器实现了这些关注, 解放应用程序开发人员,使他们专注于实现应用程序的业务逻辑方面的任务。 在这样的框架中, 部署者, 配置应用程序服务器的个人使管理可以同时发生, 交易和持久性是正确有效的, 起核心作用. 部署者几乎没有帮助执行这个复杂任务的工具. 不正确的配置可能导致应用程序故障或严重不足. 我们概述了应用程序部署者所要面临的问题, 提出了一种可以帮助程序员完成配置应用程序服务
英语原文共 9 页, 关于食品加工中机械输送系统的设计和制造的一项研究 摘要: 本文通过介绍一项研究的成果,用来制定改进输送机的方法和技术,这种 机械输送系统的制造和装配用于食品和饮料业,将减少设计、制造和装配的成本和时间。这种用于输送机组件的设计和生产的改进方法是基于其材料,零件数量和成本的最小化,其采用了面向生产制造的设计原则和面向装配的设计原则。利用改进的技术于输送系统测试验证了这种技术所取得的良好成果。与传统方法相比,材料整体成本减少了19%,装配整体成本减少了20%。 关键词:装配;降低成本;设计;DFA;DFM;机械传送 1 前言 应用于食品和饮料工业的输送机系统是由许多零部件构成的高度自动化的定制机构,其设计用于快速的生产和装配线中的产品输送,如食品箱、饮
Tribology International Influence of doping graphite on microstructure and tribological properties of plasma sprayed 3Al2O3–2SiO2 coating Abstract:With the combination of self-lubricating ability and mechanical property, high-performance ceramic-graphite composite coatings are potential candidates for machine components. Mullite/nickel cladded graphite (Ni–graphite) composite coatings with different content of graphite were fabricated by air plasma spraying technique. Results show that doping a suitable amount of Ni–graphite could greatly reduce the defects of mullite coating without significant decrease of their hardness. With the formation of re-graphitization lubricating film on friction surface, the friction coefficient of composite coating with 20 wt% Ni–graphite was observed to be 0.28, which was approximately 52% lower than that of pure mullite coating, and its wear rates was 4.15 times lower than that of pure mullite coating. 1.Introduction Plasma spr
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50 To Brand or Not to Brand Brand Relevance New Task Modified Rebuy Straight Rebuy Stage 1 Stage 8 Fig. 12. Brand relevance in relation to the buying situation and the stages in the organizational buying process faces. It is quite obvious that the brand of a new potential supplier is not very important in the case of a straight re-buy, whereas the brand relevance is at the highest for new task purchasing decisions. In relation to the stages of the organizational buying process it is vice versa. In the beginning of the purchasing process the brand relevance is very high and decreases from stage to stage.54 2.3 Power of the Business Brand Though still neglected as irrelevant and unimportant by many B2B marketers, establishing brands for B2B companies and products is not really a new invention. Many industrial brands actually have a long history:55 Table 1. B2B Brand history Saint-Gobain (1665), Daimler
Ingenieriacute;a y Competitividad, Volumen 18, No. 2, p. 207 - 216 (2016) MECHANICAL ENGINEERING Use of the VAP function in the design of cam-follower mechanisms INGENIERIA MECAacute;NICA Uso de la funcioacute;n VAP en el disentilde;o de mecanismos leva seguidor Heacute;ctor F. Quintero*sect;, Libardo V. Vanegas* * Mechanical Engineering Faculty, Universidad Tecnoloacute;gica de Pereira. Pereira, Colombia. sect;hquinte@utp.edu.co, lvanegas@utp.edu.co (Recibido: Diciembre 09 de 2015 – Aceptado: Abril 11 de 2016) Abstract Anew mathematical periodic function, called VAPfunction, is proposed for the design of cam-follower mechanisms. With the VAP function, a given variable increases and decreases almost linearly from its minimum and maximum values, respectively, while the function and its derivate are smooth. As a case study, the design of a disc cam with a translating roller follower is considered, using four displ
Numerical Control of Production Equipment Numerical control (NC) is a form of programmable automation in which the processing equipment is controlled by means of numbers, letters, and other symbols. The numbers, letters, and symbols are coded in an appropriate format to define a program of instructions for a particular work-part or job .When he job changes ,the program of instructions is changed. The capability to change the program is what makes NC suitable for low-and medium-volume production. It is much easier to write new programs than to make major alterations of the processing equipment. Basic components of NC A numerical control system consists of the following three basic components: (1) Program of instructions (2) Machine control unit (3) Processing equipment The general relationship among the components is illustrated in Fig.2.1.The program is fed into the control unit, which directs the processing equipment accordingly. Fig 2.1 Th
Visualization of PLC Programs using XML M. Bani Younis and G. Frey Abstract - Due to the growing complexity of PLC programs there is an increasing interest in the application of formal methods in this area. Formal methods allow rigid proving of system properties in verification and validation. One way to apply formal methods is to utilize a formal design approach in PLC programming. However, for existing software that has to be optimized, changed, or ported to new systems .There is the need for an approach that can start from a given PLC program. Therefore, formalization of PLC programs is a topic of current research. The paper outlines a re-engineering approach based on the formalization of PLC programs. The transformation into a vendor independent format and the visualization of the structure of PLC programs is identified as an important intermediate step in this process. It is shown how XML and corresponding technologies can be used for the formalization and visualization
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