基于ASP.NET各类控件特性的深入剖析

利用ASP.NET进行动态网页开发时,开发人员经常会使用里面一系列控件来完成页面设计,其中使用最多的是HTML控件、HTML服务器控件和WEB服务器控件。这些控件虽然外形相似,但有着各自不同的特性和工作原理,若能合理的选择控件便可以轻松实现某些功能。所以开发人员必须深入了解ASP.NET中各类控件的特点和各自的不同之处,熟练掌握它们的功能,以便在开发过程中灵活运用。     

ActiveX控件技术在PDM系统三维图档管理中的应用

研究了ActiveX控件技术在图档浏览中的应用,在PDM系统中利用三维模型浏览控件SEPartX和二维工程图浏览控件SEDraftX,来实现对三维模型和其相应二维工程图的动态交互式浏览,该技术避免了图档的数据转换,为开发三维PDM系统图档管理模块提供了一种非常实用的方法.     

开发ActiveX控件实现语音端点的实时检测

研究一种以过零率和能量为特征参数,利用VC 开发ActiveX控件,并结合MATLAB实现语音端点检测的方法.     

基于Canvas实现J2ME中的高级控件

中国手机游戏市场经过几年的市场培育，市场开发已渐成熟，3G时代的到来将使我国手机游戏市场规模将大幅度增长，一场手机游戏盛宴有望上演。J2ME手机游戏开发也日趋成熟，许多控件代码质量高，重用率高，但也有部分控件虽然功能齐全，使用方便，但界面图像不是太好，对于游戏设计来说是一大忌，本文在JZME开发平台下利用LCD UI的Canvas重写List控件实现其功能来说明适当重写控件的重要性和必要性。     

基于串行通讯的TCVI工艺集散控制研究与应用

TCVI(热梯度CVI)工艺是制备C/C复合材料的一种重要工艺.本文在分析TCVI工艺流程的基础上,利用集散控制的思想,设计一种基于串行通讯的TCVI工艺简单集散控制系统,利用Visual Basic的MSComm通讯控件实现上下位机的通信,采用VB和组态王开发TCVI工艺监控系统,实现了该工艺的自动控制,并利用此系统制备出密度大于1.75g/cm3、均匀性较好的C/C复合材料制件.     

基于3DS MAX的沙发定制设计系统研究

针对传统家具定制设计的不足,提出利用3DS MAX开发沙发定制设计系统.通过范例,使用3DS MAX在场景中创建模型,并用MAX Script编写用户界面,使用户通过界面控件对场景中的模型进行操作,实现了客户对沙发的款式、颜色和材质定制,并为其添加了空间、配套茶几,最后通过播放动画浏览定制效果.研究结果充分表明将3DS MAX及MAX Script应用于沙发定制设计系统的可行性,为家具定制设计系统的开发提供了新的工具.     

基于OPC技术实现VB与西门子PLC的数据通讯

西门子公司为用户提供了通用的标准 OPC 接口,利用这一技术,添加 VB 的通讯控件 OPC.SimaticNET 实现对西门子 PLC 的数据访问,文章着重介绍了西门子 PLC 的客户端配置,OPC.SimaticNET 和 S7Number 控件的属性、事件和方法,并着重介绍了如何利用OPC.SimaticNET 控件进行通讯程序的设计。     

飞机电源系统参数测试软件的通用性设计

从自动测试系统通用性的角度出发,阐述了ATS软件通用性的实现及关键技术.利用MFC在组件技术的基础上完成了飞机电源系统通用参数测试软件功能组件开发,同时结合GL Studio完成了图形控件的设计和开发.借助于LabWindows/CVI,给出了通用测试软件集成的详细说明和方法步骤.     

基于MSComm的L200+型氦质谱检漏仪数据监测系统软件设计与实现

本文针对L200+型检漏仪检漏数据无法自动存储、无法显示数据变化趋势等不足,在面向对象的开发环境利用MSComm控件实现计算机和检漏仪的串口通讯.在此基础上设计并完成了L200+型氦质谱检漏仪数据监测系统软件的设计和编写,实现了L200+型氦质谱检漏仪检漏数据的自动存储、处理及显示,在实际工程中得到了较好的应用.     

基于MAPX的地理信息系统的DelphiXE开发

在DelphiXE开发平台上,利用地理信息系统开发控件MapX,实现地理信息系统的基础功能。为开发地理信息系统提供DelphiXE与MapX混合编程的基本方法,是开发GIS应用系统的基础。     

CAD三维技术与形态构成

随着CAD技术的发展,三维图形已由过去的辅助作用,迅速扩大到现在贯穿于设计和生产的全过程。针对当前三维CAD技术发展的实际情况,笔者从理论和应用的角度对CAD建模技术和建模方法作了系统、全面、深入的分析。根据三维构思中形态设计的原理,探讨了将构成理论与三维CAD应用相结合,利用三维CAD系统培养学生抽象思维、形象思维和创新思维的教学模式。提出了要综合形态构成的基本要素与CAD三维建模的方法,并通过实例将设计的理念引入到教学过程中。     

开放型CAD系统的设计和开发

介绍了开放型CAD系统的设计思想，它的总体结构、功能以及进行CAD集成、应用集成和Windows集成的策略。可利用它进行交互设计，也可以用它提供的应用接口程序API(Application Interface)中的图形函数库、数学函数库和工具函数库等作为CAD软件的图形开发工具，开发不同的图示化应用系统。根据这一思想，一个开放型的二、三维交互式图形系统——KereCAD系统已经开发成功，并已投入实际应用。     

隧道窑计算机模拟的研究

为解决隧道窑存在的非优化问题，采用系统工程观点分析隧道窑系统，建立了系统结构模型，并对主要研究内容、描述变量、广义数学模型、模拟模型、模拟系统及模拟试验等进行讨论．模拟系统由数据库、数据分析、动态模拟及结果分析、计算机辅助设计等子系统组成，具有综合利用所有资源、交互式建模、动态模拟实验及结果分析、辅助设计等功能．利用计算机模拟实际或虚拟隧道窑系统，进行热工理论研究，对隧道窑的烧成制度、系统结构设计、控制策略及方法、控制系统等方面进行优化，可提高设计与运行水平．     

比例参数在参数化工程图样生成中的应用研究

在开发AutoCAD的参数化设计软件中,不同比例工程图样的生成和布局设置存在字体和标注难统一的问题.论文中介绍了针对程序设计和图样生成来调用比例因子的方法,解决了CAD系统中字体、标注难统一,灵活布局困难的问题.保证了在任意比例下生成的工程图样,其中的文字高度和尺寸标注均符合国家标准的要求,并满足了灵活布置图面的要求.     

The development and evaluation of Syco3D: a real-time collaborative 3D CAD system

This paper describes the development and evaluation of a real-time collaborative 3D CAD system, Syco3D, which allows distributed designers in a small team to work together to build and edit virtual 3D models. A shared 3D workspace, Shared Stage, is incorporated in a conventional CAD interface and provides a number of real-time collaborative features in two main interface elements: Synchronised Stage View and Data Structure Diagram. This paper also reports on a usability experiment with two versions of the system, one with the Shared Stage module and the other without, and discusses the issues raised from the development and experiments with the real-time collaborative 3D CAD system.     

Solid Edge环境下实现新型旋转式压缩机的虚拟设计

应用计算机辅助设计手段，以Solid Edge为设计平台，详细阐述了一种新型旋转式压缩机虚拟设计的过程。在Solid Edge环境下实现了：压缩机零部件的可视化三维造型设计；压缩机零部件的装配干涉分析和运动干涉分析；压缩机的动平衡虚拟设计；由三维造型快捷输出二维工程图。整个虚拟设计过程具有参数化的特点，达到了提高产品设计成功率、缩短产品设计周期和减少产品设计费用之目的。     

Product data quality validation system for product development processes in high-tech industry

Among various product data, 3D CAD data plays a key role in current product design and manufacturing processes including industrial design, detail design, CAE, inspection, mould-making, production, and so on. If 3D CAD data has geometrical or topological errors by user mistakes or modelling software bugs and those errors are not cleaned by the data creator in an early stage, the data will be transferred to the downstream operators and they have to fix the errors before starting their own work. Because 3D data is quite complex, it is very difficult to recognise the data errors manually in a modelling system before a big problem is encountered which blocks the next operation. In this case, it generally causes time delay and high cost for data correction and the effect will be bigger when the process is close to the back-end. In this research, we develop a fully automated product data quality validation and management system to support the product development processes of high-tech products like televisions, camcorders, mobile telephones, home appliances, etc. The system automatically validates the 3D data in real time and gives 3D error reports to the creator to correct modelling failures in their steps. Also, project managers can check or control the data delivery based on the data quality for each step.     

立锥式粉料运输罐体曲面展开及CAD系统开发

分析了专用罐体的几何特征及设计要求,以三角形近似展开直纹面方法为主、结合母线长度不变原则,近似展开了外锥面和内锥面等不可展曲面及筒体表面,形成一套专用罐体的曲面落料加工设计方法.基于罐体曲面离散化,用四面体离散法近似计算锥体容积.通过与罐体的Pro/Engineer实体模型数据对比,验证了曲面近似展开和容积近似计算的数值精度和可靠性.用Matlab和Visual C 联合编程开发了罐体参数化CAD系统,用于罐体结构设计.     

Collaborative design environment between ECAD and MCAD engineers in high-tech products development

In order to make more competitive electronic products, major electronics companies struggle to design products with a thin shape and complex convergence functionalities without any lead-time and cost increase. Also, the development mission of a project is changed continuously to catch up with the competitor’s products in a short time and the importance of aesthetic design is getting bigger and bigger in these days. In many cases, shape changes bring the electrical layout changes of a notebook computer main board and vise versa. Those development environmental changes make the engineers harder and harder and require more collaboration between electrical and mechanical engineers to reduce development time and design errors occur from early design stage. In this paper, a collaborative design environment consists of a web-based project management system and automated printed circuit board (PCB) generation and validation system is proposed. The web system is used for project management and design data exchange including electrical CAD (ECAD) data and related technical documents between ECAD and mechanical CAD (MCAD) engineers. By using this project management web portal, engineers can share the design information with design change history. ECAD data in Intermediate Data Format can be automatically validated in 2D domain while sending the ECAD data via web system. To generate a full 3D quality product model with PBA in MCAD side, an automated 3D PCB generation and assembly clearance checking module is developed.     

Generation of production material information for a building block and simulation of block erection for process planning and scheduling in shipbuilding

At the initial process planning and scheduling stage of a ship, the generation task of the production material information of a building block and the simulation task of the block erection have been manually performed using 2D drawings, etc. To make these tasks automatic, an accurate generation method for the production material information and a convenient simulation method for block erection using a 3D CAD model are developed in this study. For this, a 3D CAD model for a whole hull structure is generated first, and the block division method for dividing the 3D CAD model into a number of building blocks is then developed using the relationship between the hull structural parts. A generation method for the production material information for calculating the weight, etc., of a building block is developed. A simulation method for block erection is also developed using the composition and erection sequence information of erection blocks. Finally, to evaluate the developed methods, these methods are applied to corresponding processes of a deadweight 300 000-ton very large crude oil carrier. As a result, it is shown that the production material information can be accurately generated and the block erection can be conveniently simulated at the initial design stage.