数据库技术在AutoCAD中的应用研究

本文介绍了用VBA作为编程语言,采用Microsoft Jet数据库引擎实现在AutoCAD中对机械设计手册数据库表的实时查询;采用ActiveXAutomation技术在AutoCAD中实现标准件的参数化绘图和尺寸公差的自动标注。结果表明,在Auto—CAD中采用数据库技术极大地提高了企业设计效率,具有较好的实用价值和一定的推广价值。     

归档文件整理规则实施后的思考

《归档文件整理规则》实施后,文书档案管理方式发生了变化,对档案的整理在一定程度上产生了影响,应该在实施过程中总结经验,在探索新方法的过程中加以完善。     

基于AutoCAD的装配图明细表自动生成系统开发

在AutoCAD平台上,基于ActiveX Automation技术,用Visual Basic开发出一套实用的机械设计辅助工具,实现了装配图中零件序号的标注及明细表的自动生成。介绍了零件序号标注及明细表自动生成系统的设计思想和实现过程,通过实例验证该系统可智能、准确地完成所需功能,提高了绘图效率,弥补了AutoCAD的不足。     

Word文档的规范化输入

现在许多网上申报系统提供了离线填报的方式,这种方式不受在线时间限制,对于那些需要仔细斟酌、不能在短时间内完成的报表尤为适合。离线填报文档以Word文档为多,用户填写完下载的Word文档模板后上传即可,申报系统自动提取Word文档中的信息写入数据库。因为是程序自动提取信息,填报的信息要规范化。本文介绍了一些Word文档规范化输入的方法。     

冲压自动化的若干基本问题

本文分析讨论了冲压自动化领域中的若干基本问题，包括模具结构，工件上下料，毛坯开垛上料，工件码垛，安全问题等，文章介绍了一条先进的冲压自动化生产线，可供实际生产参考。     

工程设备图形化管理系统的程序设计

介绍工程设备图形化数据库管理系统设计的一般方法和技术，分析和实施将设备对象作为图形对象处理时的程序设计技术，重点叙述图形对象与数据库关联的面向对象的程序设计方法。     

机械CAD的Delphi实现技术

介绍用Delphi开发机械CAD的优势和常用技术，叙述网络化机械CAD系统的构成与实现技术，结合机械CAD的开发实例叙述其程序设计方法和技巧，并介绍相应的数据库技术。     

基于PLC的压力机自动送料装置控制系统设计

设计了一套以日本三菱FX2N系列PLC为基础的自动送料装置，可用于空调风机叶片的加工。根据所需输入输出信号选择PLC型号，画出输入输出接线图，并采用SFC(Sequential Function Chart)图进行了控制系统软件设计。     

Automated Assembly of Mechatronic Products

The synergetic combination of mechanical engineering, electrical engineering, electronics and information technology enables mechatronic products to offer high levels of flexibility and performance. This interdisciplinary interaction requires changes in product structure and accordingly adapted in production strategies. The approach outlined in this article shows the specific use of the product structure with a view to increasing assembly efficiency. The product is actively integrated in the assembly process by setting up an IT link and making use of its sensor/actuator equipment and software, thus providing support for the production system. This makes it possible to increase the efficiency of automation while at the same time reducing assembly costs.     

Model checking response times in Networked Automation Systems using jitter bounds

Response time (RT) of Networked Automation Systems (NAS) is affected by timing imperfections induced due to the network, computing and hardware components. Guaranteeing RT in the presence of such timing imperfections is essential for building dependable NAS, and to avoid costly upgrades after deployment in industries.This investigation proposes a methodology and work-flow that combines modelling, simulation, verification, experiments, and software tools to verify the RT of the NAS during the design, rather than after deployment. The RT evaluation work-flow has three phases: model building, modelling and verification. During the model building phase component reaction times are specified and their timing performance is measured by combining experiments with simulation. During the modelling phase, component based mathematical models that capture the network architecture and inter-connection are proposed. Composition of the component models gives the NAS model required for studying the RT performance on system level. Finally, in the verification step, the NAS formal models are abstracted as UPPAAL timed automata with their timing interfaces. To model timing interfaces, the action patterns, and their timing wrapper are proposed. The formal model of high level of abstraction is used to verify the total response time of the NAS where the reactions to be verified are specified using a subset of timed computation tree logic (TCTL) in UPPAAL model checker. The proposed approach is illustrated on an industrial steam boiler deployment.