查询词典 modeling

The modeling process of fillet and architrave is complex and time-consuming.In this paper,a new efficient modeling algorithm is proposed following the architectural principle of polyline.

针对工程中复杂而完美的倒角、线角建模常常需要巨大的时间代价，本文提出了一种基于特征与参数化相结合的高效建模技术。

In this paper, it is realized by data-based modeling and graphics-based modeling. The corresponding arithmetics are applied in the process.

本课题中主要通过基于数据的建模和基于图像的建模实现，并在建模过程中体会到图形生成算法在可视化中的应用。

Based on modeling test in water tank, this paper employed three different iron blocks to model water-bearing bodies and enclosed plastic pipes or rounded wood strips to model roadways. It gave physical modeling of water-bearing bodies in the working face floor with parallel Bipole-Dipole method, made analysis on the character of electrical field and the law of apparent resistivity changing when the low resistivity abnormity bodies were placed flatly close to water level under semi-space condition and were placed flatly, vertically or aslope to the water level under whole-space condition.

本文以三种不同规格的铁块模拟含水体，以密闭的塑料管或木块条模拟巷道，通过水槽模拟实验，采用平行双极—偶极法进行了对工作面底板含水体的物理模拟，分析了低阻异常体铁块在半空间条件下近水面水平放置以及全空间条件下水平、垂直和倾斜放置时的电场特征和视电阻率变化规律。

We firstly summarize the NN system modeling methods and the popular optimization algorithms, and point out the deficiencies, the limitation of noise cancellation modeling and the need of human intelligence participation, in our former optimization work after analysis. An abstract problem is extracted. It is to find out control variant that makes system output optimized using the data comprising a sample set with N x samples and their corresponding y, and it does not explore given system and achieves full automatic computation procedure. Next we propose a multi-variant controlled system optimization method utilizing CASSANDRA-I small type neural computer and program its application software. Moreover systematic experiments are made to demonstrate the method's validity, ability of noisy samples disposal and practical application.

我们总结了神经网络系统建模方法以及得到广泛采用的优化算法，并分析指出我们前阶段的优化工作中存在的去噪声建模有局限性和计算过程需人干预的不足，在此基础上把问题抽象为：已从系统获得含N个控制量样本的样本集S以及每个样本对应的系统输出，如何依据这些数据求出一个使系统输出y得到优化的控制量x，而不研究具体系统，实现不需要人智能参与自动完成的计算过程；提出应用人工神经网络硬件系统——CASSANDRA-I小型神经计算机的多变量控制系统优化方法，设计完成了其应用软件；并进行系统的实验工作，验证算法的有效性以及此方法处理带噪声样本和实际应用能力。

In light of the technical flow of coal gasification and demand of Texaco gasifier temperature soft measurement, many questions about modeling, such as selections of auxiliary variable, collection and disposal of fields data, are discussed. And the modeling of gasifier soft measurement is composed by two methods, which are fuzzy neural network and radial basic function network.

以焦化厂德士古煤气化炉为对象，根据煤气化流程的工艺分析，针对德士古气化炉膛温度软测量的需要，研究了辅助变量选择，数据采集与处理，以及利用模糊神经网络和RBF网络建立炉温软测量模型等问题，建立了炉温软测量系统。

Based on the analysis of the mechanism of robot manipulators, a trajectory tracking controlling research model is first built up with ADAMS, and its mathematical model is formulated through the study of robot kinematics and dynamics. After the modeling errors are analyzed in practical robotic systems, a conception of centralized error is brought forward according to the theory of weighting functions. In the case of modeling errors' exist, the robotic uncertain model is derived by introducing an auxiliary control variable into inverse dynamic analysis. The control strategy of robust exponential convergence is applied to the robotic uncertain model, the applicable conditions and the applicable controller with this application are presented. The stable control effect under three main model uncertainties (parametric errors, joint disturbs, joint frictions) are systematically studied on the previously built research model. The problems of robust exponential convergence controller which often results in unstable output and so produces a large relative error when the input trajectory is in a small range are resolved by adjusting the control parameters based on the controller's structure.

本文在机械手的机械结构分析基础上，利用ADAMS建立了用于机械手轨线跟踪控制研究的机械手模型；通过对机器人运动学和动力学问题的研究，建立了机械手研究的数学模型；分析了机器人系统中模型误差的主要来源，根据加权函数法分析，提出了模型集中误差的概念；在存有模型误差的情况下，采用逆动力学结构并引入辅助控制量，由机器人误差模型推导了机器人非确定性模型；提出了采用鲁棒指数收敛法对上述机器人非确定性模型进行鲁棒镇定的控制策略，并给出了对机器人进行鲁棒指数收敛控制时系统不确定因素应满足的匹配条件；针对机械手研究模型，深入研究了鲁棒指数收敛控制器对机器人系统中常见的模型参数误差、关节扰动、关节摩擦等不确定因素的镇定控制效果；针对鲁棒指数收敛控制器易产生控制量振荡的问题以及在小范围内系统轨线跟踪的稳态误差过大问题，本文分别提出了基于控制器结构的控制参数调整法和基于轨线跟踪范围大小的控制参数分段切换法。

Topics include seismic modeling study of different media, applications of seismic modeling in AVO analysis and medium parameter inversion.

从这些方法的思想和应用效果上可以看出AVO技术的发展现状及其在油气检测中的应用前景。

The Journal publishes original research papers, review articles, short communications, book reviews, forum articles, announcements or letters on applied ecological, environmental, biomathematical and informatical or multidisciplinary agricultural research, including information technology and biometry in agriculture; sustainable agriculture; natural resource management; ecological monitoring and modeling; biodiversity and ecosystem research; statistics and modeling in epidemiology.

杂志刊载原始研究文章，评论文章，短通讯，书评，论坛文章，通告或信件，内容涉及应用生态学，环境，生物数学和信息或多学科农业研究，包括农业信息技术和生物测定；可持续性农业；自然资源管理；生态学调控和模式；生物多样性和生态系统研究；统计学和流行病学模型。

Finally, an engineering example, which is an automatic carbarn, is used to illustrate the modeling and analysis methods of CDPN. control and data Petri net ; control system ; modeling and analysis

笔者提出的控制和数据Petri网是控制系统设计的一种模型，通过对该模型的分析，可提前发现前期的设计错误，缩短设计周期，完成对系统控制的确认。1 一种适用于控制系统建模与分析的Petri网

In this paper , contraposing the importance of research on aircraft carrier , a way for building virtual aircraft carder roaming is presented . The selection of modeling and rendering tool , some methods of modeling , and optimization of model library etc , are introduced .

针对目前我国研究攻击航母作战的重要性，提出了制作虚拟航母漫游系统的总体技术路线，介绍了模型开发过程中，建模工具，渲染引擎的选择和模型制作的一些具体方法，以及模型数据库的优化等。

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。