基于计算机辅助教学的组合式工程机械的构形设计

在组合式工程机械的整体设计中,引进了“功能构件”和“构形积木”的概念,介绍了运用计算机辅助设计技术制作各种“功能构件”或“构形积木”的技巧,阐述了按照功能组合和结构组合的原理进行组合式工程机械有机组合的过程,探索了改革机械设计和图学教育传统模式的方法,有利于提高学生空间思维和空间想象以及构想、构形的能力,也由此开辟了机械设计和图学教育的新途径。     

虚拟华东师范大学系统设计与实现

随着网络虚拟现实技术的快速发展,虚拟校园将成为“数字校园”的主要表现形式。虚拟华东师范大学系统目的是使“数字校园”更加完善。介绍了基于VRML技术建立的虚拟华东师范大学系统的设计与实现过程,并重点探讨了系统体系结构、三维建模与系统功能等实现技术与方法,实现了三维漫游、空间分析、查询、实时交流等功能。该系统方便了校内人员的交流与沟通。     

某型涡扇发动机综合电子调节器测控系统设计

综合电子调节器是发动机控制系统的核心部件，它与外部传感器、执行机构、控制软件等一起完成对发动机的全权限控制。文章研究了虚拟仪器技术在该复杂测控系统中的应用。介绍了系统的硬件结构设计、软件结构设计、虚拟功能单元的构造及测控功能的实现与重构。测控系统能完成综合电子调节器静态和动态过程的测控，且具有高测试精度、高可靠性、人机交互性好等特点，可用于控制器的数字化设计与研究。     

虚拟环境中组合夹具装配库的应用研究

虚拟环境为组合夹具的虚拟装配提供了有效的技术手段。针对组合夹具通用化、标准化的特点,采用“标记”的方法作为虚拟环境中元件精确定位和装配对的装配关系建立的基础。“标记”具有几何意义清晰、简便高效的特点,在虚拟环境中是组合夹具元件装配关系建立的几何基础,针对元件的功能表面建立“标记”,并以“标记”作为装配定位的基础,实现了虚拟环境中组合夹具的装配。系统采取夹具元件、组件、实例三层数据库结构进行管理,以标记作为约束建立装配关系,提高了设计效率,利于设计知识和设计经验的保存和在利用。在自主开发的虚拟装配系统中,对相关的方法和技术进行了实例验证。     

加工中心自动换刀装置的虚拟设计

一、前言虚拟制造技术是基于计算机建模和仿真的设计、制造技术,它强调在实际投入原材料实现产品之前,将产品的设计、分析、测试、制造等过程在计算机构造的虚拟开发环境中进行数字化模拟。以设计为主的虚拟制造,是在产品开发设计中虚拟设计出产品,并解决产品在设计研制阶段的问题,即完成产品的概念设计、实体造型,并在虚拟出的产品上进行功能和产品工作性能的仿真,将其结果用于修改设计。虚拟制造的优越性在于可在开发设计阶段解决产品的各个问题,不需要制造出实体机器,节约了大量投资。在计算机上解决问题,制造过程变成信息的流…     

基于CATIA系统的虚拟装配技术应用研究

虚拟装配技术是在虚拟设计环境下,完成对产品的总体设计进程控制并进行具体模型定义与分析的过程。它可有效支持自顶向下的并行产品设计以及与Master Model相关的可制造性设计和可装配性设计,以缩短产品开发周期。本文在分析了虚拟装配技术基本思想后,提出了在飞机设计中实施虚拟装配技术应用的基础环境以及具体的实施方法和途径。     

摭谈运动技术在体育教学中的地位

运动技术指能充分发挥运动者机体能力、合理有效完成动作的方法。它是运动者恰到好处地把握躯体活动分寸,达到体育运动的“度”。人们要进入体育向感性生命开放的空间,不是靠幻想而是靠“运动”,而运动的关键在于掌握合理有序的身体运动方式——运动技术,譬如,拳击讲究直、勾、摆、刺拳法的组合;游泳时若没有手脚巧妙的周期运动就不能克服水     

基于CATIA系统的虚拟装配技术应用研究

虚拟装配技术是在虚拟设计环境下，完成对产品的总体设计进程控制并进行具体模型定义与分析的过程，它可有效支持自顶向下的并行产品设计以及与Master Model相关的可制造性设计和可装配性设计，以缩短产品开发周期，本文在分析了虚拟装配技术基本思想后，提出了在飞机设计中实施虚拟装技术应用的基础环境以及具体的实施方法和途径。     

基于增强现实技术的景观规划系统

增强现实是把计算机产生的虚拟物体或其他信息合成到用户看到的真实世界中的一种技术，利用增强现实技术，设计人员能够有效地进行建筑布局的规划和设计，本文介绍了一个典型的增强现实系统-景观规划系统的实现，针对合成虚拟景物和真实场景过程中需要解决的几何一致性和光照一致性问题，采用了局部三维重建和交互的相机定标技术来实现几何一致性；对于光照一致性，则采用了光照交互指定和自动恢复相结合的方法，同时还考虑了虚拟物体投射的阴影，针对不同场景的实际应用，依据系统生成的结果合成图象，设计人员能够比较有效地完成对景观规划结果的直观评估。     

基于虚拟旅游的网站实现与镜像体验研究

虚拟旅游网站的建立基于虚拟现实技术,镜像体验是对旅游体验的模拟,两者之间具有紧密的耦合关系.旅游企业要对虚拟旅游进行推广,使其越来越普及,镜像体验要充分发挥其“试用性”功能.     

试论数字化博物馆空间艺术形态设计构思

数字化博物馆设计基于现代电子技术的发展,作为一种视听艺术,在二维的界面载体上构建出多维的视听虚拟空间的几种空间艺术形态的探讨。数字化博物馆的空间艺术形态表现形式本身就具有鲜明的空间性。设计师对虚拟空间形态的运用,会给观众带来更多趣味性和艺术性。对于设计师而言,设计创作的关键是从二维到多维空间思考角度的转变,并赋予其全新的审美趣味交流。     

P-smart—a virtual system for clothing thermal functional design

This paper presents a virtual CAD system developed for clothing thermal functional design and simulation. It allows designers and engineers in virtual space to design and preview the thermal functional performance of clothing and gives feedback to improve the design iteratively. The system provides designers with an effective tool for designing and engineering clothing to achieve superior thermal functional performance.     

支持复杂产品系统设计的虚拟知识流生成算法

复杂产品系统设计流程环节多,设计人员不仅需要掌握本环节的知识,也需要了解相关环节的概要知识,采用本体表示的复杂产品系统知识资源对设计人员构成艰巨的挑战。结合工作流与本体技术,设计了满足设计人员知识需求的虚拟知识流生成算法。算法允许设计人员指定工作流各个节点的起始概念、属性关系以及知识深度,然后遍历各个节点生成各节点本体视图,形成支持设计人员知识需求的虚拟知识流,从而促进设计人员的知识共享。算法具有起始概念顺序无关性、属性指令累加性、完备性,计算时间随本体中概念数量线性增加。最后以飞机设计中的虚拟知识流为例说明了算法应用。     

建筑装饰材料的拓展性研究

建筑装饰材料是空间表现语言的载体,是设计师创意的物质基础。只有充分了解装饰材料的性能;按照使用环境合理地选择所需材料;根据设计意图灵活运用材料,充分发挥每种材料的长处,做到材尽其能、物尽其用,满足室内空间设计的要求。人类的艺术设计是与材料并生的,任何设计都需要通过材料来实现。本文将尝试从材料的表现力入手,挖掘建筑装饰材料在室内空间设计中的表现潜能,它打破传统的思维模式,颠覆材料使用概念。     

Internet Based Collaborative Product Conceptual Design

Generation of Product Concept needs to give full play to the designers' innovative potential and collaborative work of experts in different fields. However, the collaborative innovative capabilities of geographically distributed designers are often limited and hindered by space and time. Therefore, on the basis of the requirements analysis of Internet based collaborative conceptual design and the research work we have done, this paper proposes the overall framework of supporting collaborative conceptual design on Internet. Based on this overall framework, the authors further put forward collaborative conceptual design process model that includes three stages: concept generation, concept communication and optimal product concept selection. At the end of the paper, the experiment environment of collaborative design is described. The overall framework and collaborative conceptual design process model proposed can take full advantage of Internet and give full play to experts' experiences and wisdom, so that the rapid development and innovative design of product can be provided with effectively and efficiently implemental mode and support on Internet.     

模件体系探究——以VI设计为视点

模件体系作为创造性思维方式,在生活的方方面面仍发挥着举足轻重的作用。在现代设计中,模件体系可以使设计师在设计上更加清晰、系统地创造出一定数量的模件,进行有变化的组合,形成全新的设计形态,使设计过程更加便捷,提高效率。通过剖析模件体系在VI设计系统中的应用,使模件体系在VI设计中的作用清晰明朗化,使设计者在运用标准化视觉时,能有意识地运用模件体系构建属于他们的身份与认同,并以此进行更准确、更广泛的诠释。     

计算机虚拟实验模拟训练系统的设计

计算机虚拟实验系统,是对现实的计算机实验环境进行仿真,该系统能够在最小经济代价的条件下完成复杂的计算机实验。能够根据实际需要,自行加载虚拟设备和实验项目,学生在微机上,通过仿真程序就可以完成大多数计算机实验项目。本文从计算机虚拟实验系统的功能需求入手,分析了系统的可行性和整体的功能性需求。设计包括系统总体设计、实验组件设计、虚拟实验交互功能设计、用户功能设计。     

Developing a multi-layer reference design retrieval technology for knowledge management in engineering design

Engineering design is a knowledge-intensive process that encompasses conceptual design, detailed design, engineering analysis, assembly design, process design, and performance evaluation. Each of these tasks involves various areas of knowledge and experience. The sharing of such knowledge and experience is critical to increasing the capacity for developing products and to increasing their quality. It is also critical to reducing the duration and cost of the development cycle. Accordingly, offering engineering designers various methods for retrieving engineering knowledge is one of the most important tasks in managing engineering knowledge.

This study develops a multi-layer reference design retrieval technology for engineering knowledge management to provide engineering designers with easy access to relevant design and related knowledge. The tasks performed in this research include (i) designing a multi-layer reference design retrieval process, (ii) developing techniques associated with multi-layer reference design retrieval technology, and (iii) implementing a multi-layer reference design retrieval mechanism. The retrieval process contains three main phases—‘customer requirement-based reference design retrieval’, ‘functional requirement-based reference design retrieval’ and ‘functional feature-based reference design retrieval’. This technology involves (1) customer requirement-based reference design retrieval, which involves a structured query model for customer requirements, a case-based representation of designed entities, a customer requirement-based index structure for historical design cases, and customer requirement-based case searching, matching and ranking mechanisms, (2) functional requirement-based reference design retrieval, which includes a structured query model for functional requirements, a functional requirement-based index structure for historical design cases, and functional requirement-based case searching, matching and ranking mechanisms, and (3) functional feature-based reference design retrieval, which is a binary code-based representation for functional features, an ART1 neural network for functional feature-based case clustering and functional feature-based case ranking.     

Developing a multi-layer reference design retrieval technology for knowledge management in engineering design

Engineering design is a knowledge-intensive process that encompasses conceptual design, detailed design, engineering analysis, assembly design, process design, and performance evaluation. Each of these tasks involves various areas of knowledge and experience. The sharing of such knowledge and experience is critical to increasing the capacity for developing products and to increasing their quality. It is also critical to reducing the duration and cost of the development cycle. Accordingly, offering engineering designers various methods for retrieving engineering knowledge is one of the most important tasks in managing engineering knowledge.This study develops a multi-layer reference design retrieval technology for engineering knowledge management to provide engineering designers with easy access to relevant design and related knowledge. The tasks performed in this research include (i) designing a multi-layer reference design retrieval process, (ii) developing techniques associated with multi-layer reference design retrieval technology, and (iii) implementing a multi-layer reference design retrieval mechanism. The retrieval process contains three main phases—‘customer requirement-based reference design retrieval’, ‘functional requirement-based reference design retrieval’ and ‘functional feature-based reference design retrieval’. This technology involves (1) customer requirement-based reference design retrieval, which involves a structured query model for customer requirements, a case-based representation of designed entities, a customer requirement-based index structure for historical design cases, and customer requirement-based case searching, matching and ranking mechanisms, (2) functional requirement-based reference design retrieval, which includes a structured query model for functional requirements, a functional requirement-based index structure for historical design cases, and functional requirement-based case searching, matching and ranking mechanisms, and (3) functional feature-based reference design retrieval, which is a binary code-based representation for functional features, an ART1 neural network for functional feature-based case clustering and functional feature-based case ranking.