本文介绍了FCAD系统中三类家具零件几何模型与层次式数据结构的设计考虑。
In this paper, the design considerations of the geometric modelling for three types of furniture parts and the hierarchical data structure of the FCAD system are presented.
本文介绍了FCAD系统中三类家具零件几何模型与层次式数据结构的设计考虑。
In tills paper, the design considerations of the geometric modelling for three types of furniture parts and the hierarchical data structure of the FCAD system are presented.
从水墨画成画机理出发提出一个实用的3d毛笔模型系统，精确模拟毛笔几何形态及运动弯曲等动态交互行为。
A practical 3d brush model system was put forward from ink-water drawing principle to accurately simulate geometry states and interactive behavior of brush.
在假定故障部件不能“修复如新”的条件下，基于几何过程模型研究可修串联系统的最优更换策略。
An optimal replacement policy for series repairable system is studied assuming that the component after repair is not "as good as new" by using the geometric process model.
为优化装配系统中公差链的公差值，建立了几何尺寸公差的优化模型，并提出公差的分层优化设计算法：第一层，解决设计公称值居中的优化问题；
In order to optimize tolerance values for an assembly system, a model for geometric dimension tolerance optimization was established and an algorithm for optimal tolerance design was proposed.
进一步应用基于微分几何的反馈线性化方法，将原非线性系统等价为完全可控型线性化模型。
By means of the feedback linearization procedure of differential geometry, an equivalent, fully controllable and linear model was derived via a homomorphic transformation for the AMT clutch system.
局部拟合因其具有与通用CAD系统相同的数学模型，所以它是复杂曲面测量几何造型系统的常用方法。
The local fitting method is a common method of measure and geometric modeling systems for complicated curved surface because of its mathematical model the same as that of current CAD system.
本文提出了三维地理信息系统中几何特征的误差模型。
This paper presents the error models developed for handling geometric features in three dimensional Geographical Information Systems.
提出一种基于几何造型方法的软组织变形模型，并应用于一个基于VRML的网上动物解剖学虚拟实验室系统。
A geometrically - based soft tissue deformable model is proposed and is applied to a VRML - based animal anatomy virtual laboratory system.
以多体系统理论(MBS)为基础，建立了包含测头误差、机床几何误差、丝杠和主轴热误差的综合误差补偿模型。
Based on the theory of MBS, presenting the comprehensive errors model consisting of offset probe errors, geometric errors, screw thermal error and spindle error.
应用几何光学近似理论模型计算了激光相位多普勒系统中微粒的光散射特性。
The light scattering characteristics of particles in phase Doppler sizing anemometry is calculated with a theoretical model based on geometrical optics approach.
在虚拟环境中，对人体头部变形曲面提取特征并参数化，建立基于弹簧质点系统的标准几何模型；
In a visual environment, the characters of transformative head surface were parametrically drown out and a standard geometrical model of head was established based on the spring mass system.
当今的GIS系统的空间数据模型，主要反映地图制图领域的点、线、面对象管理与操作的几何知识。
However, the spatial data model of main GIS systems only reflect knowledge of management and manipulation objects in field of cartography, such as point, line and poly geometry objects.
按照系统的几何结构，建立了深度信息的计算模型。
Based on the system geometry structure, the computing model of depth information was established.
三维模型几何相似性比较算法是基于内容的三维模型检索系统的一个主要研究方向。
The method for geometrical shape similarity matching among 3D models is one of main research problems of 3D model retrieval system.
该文介绍了门式仿真培训系统中系统几何模型的建立过程以及利用固定方向包围盒(FDH)实现系统的碰撞检验。
This article discusses the construction of geometrical modeling in simulation training system for portal crane and the implementation of collision detection by the use of fixed direction hull (FDH).
用解析几何作为一种近似的方法讨论了生命能量系统动力学模型中两个典型方程解函数平衡点的求解问题。
Analytic geometry was used as an approximate method to discuss the equilibrium values of two typical dynamic equations of Life Energy System.
然后根据冠脉造影系统的透视投影模型得到两幅不同角度的造影图像之间的几何变换关系，以及空间点三维坐标的计算方法。
Then geometrical transformation matrix between views is obtained based on perspective projection model for X-ray angiography system, and 3D coordinate of spatial points are calculated.
通过实验确定了放射源、探测器、最佳几何响应、率定系统、数学模型、计算程序、测量线路和微机。
Through experiments, the source, detector, optimal geometry, calibration system, math model, calculating programs, electronics and microcomputer were established.
本文引入了几何非线性关系和等效线弹簧模型对含裂纹的弹性轴弹性盘转子系统进行非线性动力学分析。
Non-linear dynamics characters of a rotor system for an elastic shaft-disk with a crack are examined by introducing the geometric non-linearity and equivalent line-spring model.
基于产品几何模型和装配模型的设计系统，能够支持产品自上而下、逐步求精的设计过程和并行产品设计过程。
The design system which is based on geometric model and the above assembly model can support the Top down, decomposition process and the concurrent design process.
依据储气井的材料和几何参数，建立了储气井系统模型，为储气井的安全评价提供依据。
According to the material and geometric parameters of gas storage wells, the system model is established;
以某地铁标段施工的土压平衡盾构机为研究对象，建立了盾构密封舱土压力系统离散元仿真的几何模型；
Taking the shield machine tunneling in a subway section as the research object, the DEM geometrical model for analyzing the chamber pressure of the shield machine is established.
利用距离误差模型构造出机器人本体的约束方程，并求解出机器人的实际几何参数，进而将该参数应用于修正系统的运动学模型。
Constraint equations were constructed by using distance error model, and the actual geometric parameters of the robot were solved, and then these parameters were used in the modified kinematics model.
与传统的几何建模技术不同，基于图像的建模技术采用的策略是由光学系统对原始场景模型进行扫描，然后自动恢复出场景的三维模型。
Different from the traditional geometric modeling technology, the image based modeling technology get raw data from the original scene with cameras or other kind of optical instruments.
考虑到悬架对车架动态特性的影响，建立了车架及悬架系统的几何模型和有限元模型。
Considering the influence of suspension frame on the dynamic characteristics of truck frame, the geometric model and finite element model of truck frame and suspension frame system were established.
将几何模型导入到有限元分析系统ANSYS做有限元分析的前处理，构建了以十节点四面体单元为基本单元的有限元计算模型。
Then the solid geometry model is entered into ANSYS to do the pre-treatment of FEA. It is disassembled by ten-noded tetrahedron elements.
应用于EX系统的NURBS曲面模型是本文的主要研究对象，EX系统从外部CAD／CAM系统获取曲面模型参数信息，通过IGES文件传递，将参数化曲面模型转化为系统可操作的几何模型。
The surface mesh is used in a GCAD system DressingSim EX. Our research aims at NURBS surface models. The models are transferred from exterior CAD/CAM system to EX system by IGES files.
目前，基于路段中心线的二维道路网络模型已经普遍存在，但其在几何特征及拓扑关系表达等方面都难以满足复杂交通系统的需求。
The information of centerlines can not cover the changes of lanes, and the two-dimensional model is also inadequate in the expression of three-dimensional transportation networks.
目前，基于路段中心线的二维道路网络模型已经普遍存在，但其在几何特征及拓扑关系表达等方面都难以满足复杂交通系统的需求。
The information of centerlines can not cover the changes of lanes, and the two-dimensional model is also inadequate in the expression of three-dimensional transportation networks.
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