查询词典 modeling

In the proposed formulation, the fluid jump arc of Second order Fluid Stochastic Petri nets, which takes deterministic jump height, is introduced for the sake of modeling impulse rewards. In order to model non-Markovian stochastic systems, the fluid jump arc is combined with the flush-out arc. As a result the fluid jump arc as a modeling primitive has the function of emptying in zero time the existing fluid from the continuous place connected with it.

为方便利用该机制建模冲量回报，引入二阶流体随机 Petri 网中的流体跳跃弧，跳跃弧的跳跃高度取确定值；为方便建模非马尔科夫随机系统，将清空弧与流体跳跃弧结合，使得流体跳跃弧作为建模原语直接具有瞬间内清空与之相联接的连续库所的功能。

This paper introduces the application fields of reverse engineering , discusses the techniques of coordinate data acquisition and the features and the used scopes of all kinds of measure methods, elaborates the principal techniques of surface reconstruction of reverse engineering,analyses the problems of surface reconstruction., addresses a kind of algorithm of the scattered "points cloud" preprocessing and a method of employing CAD modeling software to finish surface modeling,develops a cloud data optimum processing programme.

本文介绍了反求工程的应用领域，讨论了坐标点的测量技术及各种测量方法的特点与适用范围，阐述了反求工程中曲面重建技术，分析了曲面重建中存在的主要问题，提出了离散"点云"的预处理算法及利用CAD造型软件进行曲面造型的方法，并开发了"点云"数据优化处理程序。

It's pointed out that soft sensor will play more important role in field bus network control system. According to this, a crude solution was addressed. At last, we point out that soft sensor technology must used to build an information warehouse for the whole enterprise, combined with data fusion, data warehouse, data rectification and other related technologies. The main contributions of this dissertation are as follows: The background, requirement, and application situation of soft sensors are expounded, the theories, methods and skills of soft sensing technology are analyzed, and the fruits and problems in current soft sensor technologies are summarized. Some new methods of soft sensor is proposed: A principal component analysis-based secondary variable selection method are proposed; A new conception which modeling data should have gross error detection is addressed, and then a cluster analysis-based modeling data gross error detection method is given.

本文的主要贡献有：对软测量技术根据实践的要求进行了一定的理论研究，针对具体问题提出了新的方法：讨论了辅助变量选择问题，研究了基于主元分析的辅助变量选择方法，该方法克服了传统方法只能利用数学模型产生的仿真数据进行最优辅助变量选择的缺点，可以根据历史数据进行辅助变量选择；提出了建模数据显著误差侦破的概念，指出传统的显著误差侦破研究的是已知过程数学模型的情况，而建模时数学模型是未知的，但是直接来自现场的数据并不能保证不含显著误差，并用基于聚类分析的方法解决了该问题，该方法利用聚类分析原理，直接面对过程数据，不需以过程模型为基础，在此基础上给出了软测量建模过程中样本数据的处理方法。

Requirement: Understand relevant concept, master principle of abstraction and modeling, understand different modeling paradigms, study how to select a specification methods to analysis system.

要求：了解需求分析的有关基本概念，掌握抽象和建模的原则，理解不同的建模范例，学会如何选择一个规格说明的方法。

On the basis of the casing damage mechanism study,the fluid pressure field numerical modeling and finite element numerical modeling under solid mechanical propertied and fluid-solid coupling conditions were introduced.

并进行了大量的现场测试，获取了大量准确的资料，为深化套损机理研究奠定了基础和提拱了支撑；五是开展了大量的室内和现场试验。

Manage all the technical papers and materials of the modeling center, establish and protract modeling and technical papers

管理模具中心的所有技术文件和资料，制定和绘制模具图纸和技术文件

Manage all the technical papers and materials of the modeling workshop, establish and protract modeling and technical papers

管理模具车间的所有技术文件和资料，制定和绘制模具图纸和技术文件

The advantage of lunar regolith finite element modeling based on ABAQUS is expounded. The way to build the model is presented in detail, including the choosing of constitutive model, the confirming of parameters and detailed modeling steps. One example is given to prove the validity of the model.

阐述了用ABAQUS软件建立月壤有限元模型的优越性，介绍了建模方法，包括本构模型的选择、月壤参数的确定，以及具体的建模步骤，并通过算例证明了该模型的有效性。

In the 5th chapter, the application of Multi-Agent technology in Concurrent Engineering is studied. With the shaft strength and rigidness analyzing agent and gear strength analyzing agent as examples, an agent model is studied and provided. A federated multi-agent infrastructure based on product assembly model and multiple analyzing agents is suggested. By this, cooperation under distributed and heterogeneous environment and efficient information integration among mechanical geometry product modeling system, assembly modeling system and analyzing system can be realized.

第五章研究了多代理（Multi-Agent）技术在并行工程中的应用，以转轴强度与刚度验算代理和齿轮强度验算代理为例子分析了代理的模型，研究并提出了一种基于产品装配模型和多分析计算Agent的联邦制体系结构，该体系结构能够支持异构分布环境下的协同工作，能够实现机械产品几何造型系统、装配建模系统、分析设计系统之间的有效集成。

Cutter blade in the face of the modeling, this paper presents a basic model of ideological confrontation flank milling reasoning and mathematical algorithm: First, the establishment of the cutter edge cross-section curve and the equation ruled surface and then through the algorithm to generate cutter rake face and the flank, Bezier curve-based algorithm to generate the surface of the spiral groove cutter in order to achieve the opposite blade face milling modeling.

在立铣刀的刃面的建模方面，本文提出了一种基本的建模思想对立铣刀的刀面进行数学推理和算法实现：首先建立立铣刀的刃口曲线及横截面的方程，然后通过直纹面生成算法建立立铣刀的前刀面和后刀面，通过基于Bezier曲线的曲面生成算法建立立铣刀的螺旋槽，从而实现了对立铣刀刃面的建模。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。