【作者】 陈春明；

【导师】 吴晓明；

【作者基本信息】 燕山大学 ， 机械电子工程， 2005， 硕士

【摘要】 本文以中文WindowsXP为操作平台,以Autodesk公司的AutoCAD2004和 MathWorks 公司的 Matlab6.5 为支撑软件,利用 Visual Basic 6.0 语言开发了比例阀及其回路 CAD 软件系统。 该比例阀及其回路 CAD 软件系统主要包括的内容为:1.输入输出模块;2.比例阀的选择及计算模块;3.比例阀回路生成模块;4.比例阀控制回路的动态特性分析模块;5.界面模块。本文阐述了各模块的原理及实现。 该比例阀应用软件涉及到的知识有:软件工程、面向对象技术、ActiveX自动化技术。本人在对比例阀及其控制回路理论资料进行总结、归纳的基础上,利用面向对象编程的思想对软件进行了开发。 该软件的比例阀选择及计算模块可根据用户的输入,进行判断、推理,并调用相应的计算模块,从比例阀产品数据库中选择出合适的比例阀,以图表的形式给出结果,并可对不合理参数予以报警。比例阀回路模块利用AutoCAD 建立了元件符号库和基本回路库,用户既可修改己有的回路也可根据需要调用元件符号库中的元件生成自己的回路。比例阀回路动态特性分析模块用 Matlab 建立了典型回路的数学模型,用户可通过选择回路模型,输入参数,选择模拟方法实现比例阀回路的动特性分析,并得到可视化的结果。在软件的设计中应用了 ActiveX 自动化技术,实现了 Visual Basic 对AutoCAD 和 Matlab 的控制。 软件采用了完全汉字 Windows 的界面风格,具有友好的人机交互功能,操作简单,易学易用。更多还原

【Abstract】 This paper presents the software of proportional valve CAD. The software uses Windows XP as its O.S. and uses Autodesk’s AutoCAD2004 and MathWork’s Matlab6.5 as its basic software. The tool of development is Visual Basic 6.0. The software includes five parts: the module of input and output; the module of proportional valve selection and calculation; the module of proportional valve circuit; the module of analysis of dynamic characteristics for proportional valve circuit; the module of interface. The paper introduces the principle of all modules and their realization. The software uses the following knowledge: software engineering, the object-oriented technology, ActiveX automation technology and so on. On the basis of collecting material about proportional valve, the software is developed with the methods of OOP(Object-Oriented Programming). According to the input of users, the module of proportional valve selection and calculation can judge and infer and call the corresponding modules of calculation to get right proportional valve from database of proportional valve. The result is displayed by chart. Furthermore, program can give warning to illogical parameter. The module of circuit uses AutoCAD to found the library of component symbol and basic proportional valve circuit. User can amend an available circuit and also can create a new circuit. The module of analysis of dynamic characteristics for proportional valve circuit presents mathematical models of typical circuits. User can get visible result of simulation by selecting the model, inputting parameters and selecting the methods of simulation. The software adopts the technology-ActiveX automation. Visual Basic uses this technology to control AutoCAD and Matlab. The software holds friendly user interface like Windows. It is easy to use and learn.更多还原