【作者】 郭天太；

【导师】 周晓军；

【作者基本信息】 浙江大学 ， 机械制造及其自动化， 2005， 博士

【摘要】 本文的研究内容紧紧围绕基于VR的虚拟测试技术这一概念，重点在于从宏观角度对基于VR的虚拟测试技术进行系统的研究，以求建立其基本概念及理论模型、实现方法等，具体内容可大致分为三个部分：理论基础、实现技术、应用实例。主要研究内容如下： 第一章是绪论部分。首先介绍了虚拟现实技术的概念、特点、历史与现状、以及虚拟现实技术在机械制造领域的应用。然后介绍了基于VR的虚拟测试技术的项目背景、研究现状、研究意义与研究内容，讨论了本文的创新之处。最后给出了论文的主要工作以及论文的组织结构。 第二章的主要内容是基于VR的虚拟测试技术的概念及模型，具体内容包括：基于VR的虚拟测试技术在VM的全生命周期中的作用；基于VR的虚拟测试技术的概念、理论模型、基本思想、工作原理、理论框架等；基于VR的虚拟测试系统的体系结构、分类、主要功能、实施步骤、功能及局限性等；基于VR的虚拟测试技术的哲学意义；对几种含义迥异的虚拟测试技术名称的概念辨析。最后对于基于VR的虚拟测试技术的应用前景进行了展望。 第三章研究基于VR的虚拟测试技术的理论基础，内容主要包括相似性原理及其在基于VR的虚拟测试技术中的应用；面向对象思想及其在虚拟测试技术中的应用；VR技术的工作原理；虚拟测试系统的仿真原理；以及虚拟测试系统中的测试技术。本章说明了基于VR的虚拟测试技术的方法论基础和多学科理论来源和基础。 第四章的研究内容是基于VR的虚拟测试技术的关键实现技术，主要内容包括：虚拟测试系统中的三维建模技术、虚拟仪器技术、可视化技术、数据管理技术、人工智能技术、系统集成技术等内容，最后在前述内容的基础上，建立了基于VR的虚拟测试技术的集成化模型。 第五章是一个基于单机的虚拟测试系统示例：建立在沉浸式VR系统基础上的车辆操纵稳定性虚拟试验系统。内容包括系统配置、车辆操纵稳定性分析技术介绍、WTK的工作原理、车辆操纵稳定性虚拟试验系统中的三维建模技术和VI技术、以及基于虚拟测试技术的车辆操纵稳定性虚拟试验技术，最后给出了车辆操纵稳定性虚拟试验系统的部分结果。 第六章介绍了一个基于网络的虚拟测试系统示例：在桌面型VR系统上实现的基于Web的虚拟无损检测系统。内容包括系统配置、VRML语言及其在基于VR的虚拟测试系统中的应用、无损检测技术概论、基于Web的虚拟无损检测系统的体系结构、基于Web的虚拟无损检测系统的实现，最后给出了基于Web的虚拟无损检测系统的部分仿真实例。 第七章是总结与展望，包括对全文研究内容的总结，和对今后工作的展望。 由于基于VR的虚拟测试技术是一个相对较新的概念，所涉及的理论和技术相当繁多，应用范围也相当广阔，加上受本人的水平及客观条件的限制，本文的研究内容只是初步的研究和探讨，难免存在不少缺陷和不足，这既有待于以后的完善和发展，也敬请各位专家和同行批评指正。更多还原

【Abstract】 Centered on the concept of VR-based Virtual Test technology(VRVT), this dissertation puts emphasis on the systematic study of VRVT in general, with the aim to set up the basic concept, theoretical models and implementation methods of VRVT. The content is made up of three parts: theoretical basis, implementation techniques and application examples. The contents include:Chapter 1 is the introduction part. It starts with an introduction of Virtual Reality(VR), including its concept, characteristics, history, state-of-the-art, and its application in the field of mechanical engineering. Then come the discussions of VRVT, including its project background, state-of-the-art, study significance, study details and the innovations made in this dissertation. Finally the main contents and the architecture of the dissertation are given.Chapter 2 focuses on the concept and models of VRVT, including: role of VRVT in the life-cycle of Virtual Manufacturing(VM), the concept, theoretical model, basic idea, working principle and theoretical framework of VRVT, the architecture, classification, main functions, implementation procedures, advantages and disadvantages of VRVT systems,the philosophical implications of VRVT, the discrimination of the concepts of several available "virtual tests", and the application prospect of VRVT.Chapter 3 studies the theoretical bases of VRVT, including the principles of similarity and its application in VRVT, Object-Oriented(OO) technology and its application in VRVT, the basic principles of VR, simulation technology and test techniques and their roles in VRVT, thus clarifying the methodological bases and multi-principle nature of VRVT.Chapter 4 discusses the key implementation techniques of VRVT, including 3D modeling, Virtual Instrument(VI), scientific visualization(ViSC), data management, artificial intelligence(AI), system integration techniques in VRVT. Finally, based on the foregoing discussions, an integrated model of VRVT system is formed.Chapter 5 is an example of VRVT system of the immersive type VR, based on a PC for the virtual test of vehicle steering and handling stability performances, including the system configuration, brief introduction of vehicle steering and handling stability analysis, working principles of World Tool Kit(WTK), 3D modeling, VI and steering and handling stability analysis techniques in it. Finally some test results are shown.Chapter 6 is an example of VRVT system of the desk-top type VR, based on the web for the simulation of non-destructive testing(NDT), including the system configuration, brief introduction of VRML (Virtual Reality Modeling Language) and NDT, system structure and implementation. Finally some test results are given.Chapter 7 is a summary of the contents of this dissertation, and a discussion of the works to be further done in the future.VRVT is a newly-developed concept, and it has many supporting theories and techniques and a wide spectrum of application fields. Limited by the author’s capabilities and circumstances, the contents listed above are only an introductory study of the topic, and it’s bound to have many shortcomings that are to be corrected and developed in the future, and any comments are welcome.更多还原