采用模糊综合评价法设计铜铝管对焊机

以系统的观点进行功能分析,最终采用模糊综合评价法这一现代机械系统设计方法进行决策。通过对总功能的分解和原理解的组合,得到了铜铝管对焊机的形态学矩阵;通过对形态学矩阵中各方案的模糊综合评价,得到了最佳的可行方案。实践证明,用这种设计方法研制出的铜铝管对焊机,整体性能达到了国际先进水平。     

简单化集成：一个拥有全部功能的控制器

2005年，ELAUAG展示了其PacDrive自动控制系统的各类自动机械功能，这是一项伟大的创新，体现了将自动机械模块集成于包装处理过程的趋势。[编者按]     

空调行业“铝代铜”发展前景无法预测

针对近期空调行业爆发的“铝代铜”口水战，一直保持沉默的国际铜业协会昨日向《每日经济新闻》发来声明称，铜作为空调连接管的材料，其承压、抗疲劳、抗腐蚀性能优于铝是有科学依据的事实。在抑茵指数方面，铝的相关指数也远低于铜，“铝代铜”的发展前景仍无法预测。而铜铝管作为近两年刚面世的新产品，其耐电化学腐蚀、疲劳破坏，     

可编程控制器在光束线真空控制系统中的应用

光束线真空联锁保护与控制系统是保障同步辐射加速器与光束线、实验站安全、可靠运行的至关重要的必要设备。采用标准化、高质量的可编程控制器（PLC）为核心的光束线真空控制系统可以提高系统的可靠性、稳定性、抗干扰性和电磁兼容性。本文介绍了合肥同步辐射光源真空联锁保护与控制系统以及PLC在该控制系统中的应用。     

PLC控制系统在竖炉生产中的应用

本文阐述了炼铁竖炉的布料控制系统的改造情况及可编程序控制器控制系统在竖炉生产中的应用及使用效果。     

气动伺服控制系统的自适应模糊控制器的研究

介绍了一种新型的自适应fuzzy-PD控制器，并研究了它在气动伺服位置控制系统中应用的适应性问题和非线性摩擦力的补偿方法，提出了一种新的模糊逻辑控制补偿算法，它通过一个自适应模型参数Ma的调整控制，提高了气动伺服系统的控制精度，试验结果表明：与传统的控制方法相比较，自适应fuzzy-PD检制器具有动态性能好，自适应能力强和位置控制精度高等优点。     

基于PC的包装用HMI控制器

包装行业发现基于PC的人机界面和相关控制也可以提供与生产有关的所有信息。[编者按]     

《玩具类产品强制性认证实施规则》解读

一、强制性产品认证制度简介强制性产品认证制度,是各国政府为保护广大消费者人身和动植物生命安全,保护环境、保护国家安全,依照法律法规实施的一种产品合格评定制度,它要求产品必须符合国家标准和技术法规。强制性产品认证,     

Prospects for software for transducer systems for control and measurement

It is shown that user-oriented software plays an important role in the design of sensor systems. Justification is provided for functional modules that make it possible to introduce instrumentation support and application shells into the sphere of metrological practice.Translated from Izmeritel'naya Tekhnika, No. 11, pp. 13–16, November, 1995.     

用于OEIC的InPMISFET的研制

用MOCVD方法生长了n+-InP/n-InP/SI-InP材料,以HfO2为介质膜,用电子束蒸发和选择化学腐蚀研制成栅宽0.002mm、栅长为0.2mm的具有蘑菇状栅极结构的InPMISFET.直流特性测量表明,跨导gm=80-115ms/mm,开启电压VT-3.62V,沟道的有效电子迁移率ueff=674cm2/V·S,界面态密度NSS=9.56×1011cm-2.设计计算的特征频率fT=97.1GHz,最高特征频率fmax=64.7GHz,尚未发现器件性能的漂移现象.本器件可作为InP基的单片光电子集成器件(OEIC)的放大部分.     

多联式分体空调机安装要点

文章总结了多联式分体空调机的安装工艺,并详细的介绍了试压、抽真空及充冷媒的施工方法和调试、试运转的注意事项等.     

Concepts for textile reinforcements for timber structures

This paper presents general remarks on the development of timber structures as a result of technological changes. It discusses drawbacks of wood with respect to structural application. Shear and transversal strengths are very low due to the anisotropy of wood. Various techniques are applicable to cope with this drawback. This paper presents the reinforcement by means of tailor made textiles as comprehensive technology to deal with this kind of difficulties in many design situations. Particular importance is attached to the material productivity during the transformation of raw wood into structural cross sections. It is shown that cut offs in the sawmill and the predominating full section lead to a poor use of the material compared to technical profiles. A new understanding of the wood as a cellular solid is presented that allows a thermo-hygro-mechanical forming of cross sections from solid wood panels.

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Résumé Cet article présente des considérations générales sur l’évolution de constructions en bois en␣relation avec les changements technologiques. Il␣discute les inconvénients de l’utilisation structurale du bois. Vu l’anisotropie du matériau, la résistance au cisaillement et celle perpendiculaire aux fibres sont très faibles. Diverses techniques ont été proposées dans le passé pour pallier ces inconvénients. Les renforcements textiles sur mesure sont présentés comme technologie universelle permettant de surmonter ces difficultés dans la construction. Un accent particulier est mis sur la productivité du matériau à l’égard de la transformation de la grume dans une section portante. Il est démontré que les déchets dans la scierie ainsi que les sections solides mènent à une mauvaise exploitation du matériau bois comparée à celle des profilés métalliques et plastiques. Une nouvelle conception du bois comme solide cellulaire est présentée∼; elle permet un formage thermo-hygro-mécanique des sections tubulaires à partir des panneaux de bois massifs.

     

中国标准化协会标准公告

2007年第8号(总第27号)No.008-2007(No.027intotal)中国标准化协会批准以下标协标准,现予公告。CAS156-2007标准电子签名系统应用规范第1部分:IE应用接口     

Further evidence for adjusting for multiple authorship

Conclusion With the research byLong, Allison andMcGinnis, Cole andCole, an-Garfield an initial understanding of the consequences of multiple authorship for empirical studies of science is emerging.⁹ It is too early to suggest, asLong andMcGinnis do, that indices which disgegard multiple authorship are without serious short-comings. The best advise would be to use measures which take multiple authorship into account, compare them with others that do not, and examine any differences that might emerge. At least for the data will which I have worked, multiple authorship makes a considerable difference. Although little difference is found with the data collected by long and his colleagues when examined within an unclear regression analysis framework, it would seem premature to recommend unadjusted counts. The best advice to the prospective researcher would be to collect complete information on the number of authors for all published work and all citations assuming that difference between adjusted and unadjusted counts will emerge and be comfortable with the knowledge that if it does, the measures used can properly treat the data.The major point I made earlier, that the failure to adjust for multiple authorship is the most serious error in empirical judgment made in the sociology of science, emerges more forcefully. The error will require substantial redevelopment of previous empirical literature constructed with these faulty measures.Finally, the point should not be lost that the most serious problem remains and that is the validity of the paper model of science with examines article and citation counts to understand this complex dynamic project of human inquiry.¹⁰