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The simulation of the vector control system for rotor flux orientation is studied in this paper. The modeling and simulation of the vector control system of speed and flux closed-loop with the torque inside loop are completed by applying electrical principles and the toolbox of Simulink and Power System in the Matlab software. The paper mainly introduces the modeling of the speed adjustment system and the setting of parameters of the controller. The obtained results of the simulation are close to actual situation, which proves the correctness of the modeling.

文章对按转子磁链定向的矢量调速系统进行了计算机仿真研究，运用Matlab的Simulink和Power System工具箱及面向系统电气原理结构图的仿真方法，实现了带转矩内环的转速、磁链闭环矢量控制系统的建模与仿真；重点介绍了调速系统的建模和调节器参数的设置，给出了矢量交流调速系统的仿真模型和仿真结果，仿真结果非常接近实际情况，说明了仿真模型的正确性。

It analysed the technology used in roaming engine and the method to modeling.It also designed a kind of work flow for geometry modeling and applied some of banausic technology for three-dimensional modeling;It also designed the engine by loading the virtual robot.Depending on the technology of collision detection,it developed a detection arithmetic for roaming;At last,it build the current roaming engine based on the model of virtual robot in the development environment of VC++ supported by MFC and WorldToolKit.

通过对虚拟现实相关技术进行研究，并分析了现有的主流漫游引擎和建模方法，设计了一种几何建模流程，并对多种三维建模优化技术进行应用；提出在虚拟场景中引入了虚拟机器人模型来设计漫游引擎，结合碰撞检测技术，提出了漫游检测流程算法；最后，运用VC++开发平台，基于MFC开发类库和WorldToolKit虚拟现实支持类库的支撑，实现了基于虚拟机器人模型的漫游引擎。

By modeling and machining four samples, the paper discusses the method of the planar and multidimensional surfaces engraving, and solves the problems that appear in the process of modeling. For example, the graphics that are not unclosed and intersectant usually result in the modeling failure. The approach of solving the problem is that break up the junctions and connect all the relevant lines to the unclosed graphics.

通过雕刻实例分析，讨论了家具图谱的建模要点，并详细论述了平面雕刻尤其是异型面雕刻的建模方法，并对建模中出现的问题提出相应的解决方法，例如通过封闭二维图形，解决未封闭图形的建模问题和交叉点的问题。

Regarding such complex system, understanding merely the interior partial links in the system is insufficient to explain the system behavior, knowing the interaction of various parts in the system is equally important for the explanation of system behavior, so the theory of complex system and thought of agent based modeling, which bring the microcosmos and macrocosmos together, enlighten the ecosystem modeling. But at present, the following problems should be solved in the ecosystem modeling based on the complex system theory. 1. How to acquire the quantitative indexes of the ecologic factors in the microscopic ecosystem.

对于生态系统这样的复杂系统，以还原分析为基础的传统建模方法遇到了极大的挑战，仅仅了解系统内部的局部环节而忽略事物间的固有联系，远远不足以解释系统的行为，系统各部分之间的相互作用在解释系统行为方面同等重要。

In this thesis, we use all these modeling methods, geometrical modeling to objects which need high realistic, motorial modeling to which require more movements.

本文拟采用几种建模方法相结合的策略，对场景中逼真度要求比较高的对象，侧重于几何建模；场景中运动方式比较多的对象，侧重于运动建模等。

Chapter 2: The principles of triangular Bezier surface modeling were introduced, including degree elevation, differentiation, split and reginal change, etc. The explicit triangular Bezier C〓 modeling and parametric triangular Bezier GC〓 modeling were also introduced.

第二章 系统研究了Bezier三角曲面的基本理论，包括Bezier三角曲面的升阶、求导、分割和区域变换理论；给出了显式Bezier三角曲面的C〓构造和参数Bezier三角曲面的GC〓构造方法。

Secondly, modularization technique is used in the structure analysis of product. The modeling means using mainly top-down modeling and subsidiarily down-top modeling is applied, and controlling codes are programmed through applying API and VBA in SolidWorks. The product is detected by finite element technique. Finally, the rapid design system is developed for bend door of railway vehicles, and it has got an effective application in enterprises.

本系统在产品结构分析上采用模块化技术，在参数化建模中应用自上而下建模为主、自下而上建模为辅的建模手段，通过应用SolidWorks的API函数及VBA编制相应的控制程序，并通过有限元技术对设计的产品进行力学分析验证，完成了轨道车辆弯门产品的快速设计系统的开发。

System modeling involves with both functional modeling and timing modeling, which relate with computation model (eg, Data-flow-oriented vs. Control-flow-oriented, Uni-processing vs. Multi-processing), time model (eg, Continuous vs. Discreet, Time vs. Untimed, Cycle-based vs. Non-cycle-based, State-based vs. Event-driven, Branching-time vs. Linear-time, Single-rate vs. Multi-rate) and communication model (eg Shared Variable vs. Messaging Passing).

涉及系统建模与功能建模和时间建模，涉及的计算模型（例如，数据流导向与控制流为导向，统一处理与多处理），时间模型（例如，连续主场迎战Discreet公司，时间与Untimed ，周期为基础的与非周期为基础，以国家为基础与事件驱动，分枝时间与线性时间，单率与多速率）和通信模型。

Besides, a method has been creatively proposed to process stratum rupture using cross-ring. Bridge-edge and stratum area decompounding method has been used to solve reverse fault issue, and the applying problem basing on state machine model has been resolved by using a function class mechanism. It supplies a new idea and new method for reservoir stochastic modeling. At the same time, the geology stochastic modeling theory system has been enriched and improved. It has important academic and practical meaning in deepening reservoir development geology stochastic modeling theory and increasing remaining oil research extent.

该软件创造性地提出用相交环线概念来处理地层撕裂；用桥边及地层面区域子分的概念来处理带有逆断层的地层撕裂；用功能类机制及相应的消息分发模型，来解决基于状态机模型的应用问题等理论，为储层随机建模研究提供了新思路和新方法，进一步丰富、完善了储层随机建模的理论体系，对深化油田开发地质随机建模理论及加大剩余油挖潜力度具有重要的理论意义和现实意义。

The main content reads as follows: Chapter 1 gives a survey on the three methods by which regular geometric modeling can be rended, including parametric curves/surfaces modeling method, algebraic curves/surfaces modeling method and subdivision. Moreover we introduce in greater detail about two means for subdivision which fit into two class: geometric subdivision and algebraic subdivision.

全文主要内容如下：第一章首先对CAGD中构造&规则几何形体&的三类造型方法：参数曲线、曲面造型方法，代数曲线、曲面造型方法及细分法——曲线、曲面的离散化造型方法，作了较系统的综述，并对两类主要的细分法——几何方法与代数方法，作了较详细的介绍。

Summary In copyright infringement cases,if the alleged infringer uses or even plagiarizes the copyrighted works or parts thereof,which causes no substantially adverse effect on the normal exploitation of the work,nor does it inflict any substantial damages to the right owner,the de minis doctrine should be applied to exempt the liabilities of the defendant and seek the balance of interests between the right owner and the general public embodied by the copyright law.

在侵犯著作权案件中，如果被控侵权行为人虽未经著作权人的同意，使用甚至抄袭了受著作权保护的作品或作品的片段，但若情节轻微，未对该作品的正常使用产生任何实质不利的影响，亦未对权利人的权利造成实质性的损害，则应适用&不计琐细原则&，免除行为人的责任，以寻求在权利人利益与著作权法所体现的社会公共利益之间的平衡。

This new product will become our best seller.

这个新产品会成为我们最畅销的产品。