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任意波形发生器及其应用 被引量:11
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作者 杜华 《国外电子测量技术》 2005年第1期38-40,共3页
通过对任意波形发生器基本原理的介绍,阐述了任意波形发生器编辑波形的方法和应用。
关键词 图形编辑 仿真 任意波形发生器 电路设计 信号源 自动步进编辑器
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基于PLC的钢筋钢带焊接生产线控制系统设计 被引量:1
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作者 周好斌 付新宇 +2 位作者 刘嘉琪 陈怀宇 曹杰 《焊管》 2018年第12期26-29,36,共5页
针对目前国内钢筋钢带焊接受人工因素影响导致的质量差、效率低的问题,设计了一种基于PLC的钢筋钢带焊接生产线过程控制系统,并介绍了该系统的总体设计和控制方案。实践应用表明,全自动焊接生产线控制系统能够实现自动步进,可以保证焊... 针对目前国内钢筋钢带焊接受人工因素影响导致的质量差、效率低的问题,设计了一种基于PLC的钢筋钢带焊接生产线过程控制系统,并介绍了该系统的总体设计和控制方案。实践应用表明,全自动焊接生产线控制系统能够实现自动步进,可以保证焊接尺寸要求,焊接完成后钢带直线度误差为2 mm/m,平面平整度误差≤2 mm/m;焊接过程采用直回路焊接方式,保障了焊接点的稳定性,焊接抗剪性能满足钢筋屈服力0.3倍以上的标准要求,焊接参数相对稳定,受人为影响因素少,焊缝成形美观,焊接质量较手工焊接稳定;焊接的工序动作全部由机器自动完成,生产效率高。 展开更多
关键词 钢筋钢带 自动焊接 自动步进 PLC 控制系统
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Standardization of English Navigation Terminology in Railway Traffic Domain
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作者 Ayse Yurdakul Eckehard Schnieder 《Journal of Civil Engineering and Architecture》 2015年第1期57-63,共7页
The technical progress and the globalization accelerate rapidly the development of new disciplines and sub-disciplines. Consequently, new and specific terminology is necessary. In addition, the interdisciplinarity con... The technical progress and the globalization accelerate rapidly the development of new disciplines and sub-disciplines. Consequently, new and specific terminology is necessary. In addition, the interdisciplinarity contributes as well to the development of communication problems between non-professionals and experts of a special domain or between experts of different domains--as well at international level. Usually, technical terms are defined differently according to their domains. Therefore, a new terminological approach will avoid semantic vagueness as synonymy, antonymy, risk of confusion, hypernymy-hyponymy relations and polysemy, homonymy, etc.. For example, the terms "localization" and "positioning" are prototypes for this semantic vagueness. The objective of the iglos ("intelligent glossary") terminology work of the Institute of Traffic Safety and Automation Engineering of the Technische Universigit Braunschweig is to clarify the multilingual and multidisciplinary misunderstanding between special languages of different domains by standardizing the definitions of technical terms. The focus of this paper lies on semantic problems of English navigation terminology in railway traffic domain and the clarification of the semantic vagueness between its terms with a modeling process and a linguistic method with different criteria. Finally, the result of these approaches should be a consistent navigation terminology in the railway domain. 展开更多
关键词 TERMINOLOGY methodological approach semantic vagueness iglos work consistent terminology NAVIGATION railway.
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