查询词典 calculus of finite difference

Firstly, according to electromagnetic field theory, the 2-dimensional (2-D) mathematical model of a three phase squirrel-cage Y802-2 induction motor is developed. Then general equations can be deduced from finite element discrete and functional analysis. The motor's 2D solving region of electromagnetic field is given based on the boundary conditions and assumption conditions of the squirrel-cage induction motor. Through finite element mothod and inner–outer convergence method, magnetic field distributions and magnetic forces of bars can be calculated in following rotor conditions: health rotor, one single broken bar, two adjacent broken bars, two broken bars with one good interval, two broken bars with two good interval and four adjacent broken bars.

本文首先根据电磁场理论建立Y802-2型三相笼型感应电动机二维电磁场的数学模型，并对其进行了有限元离散以及泛函分析，推导出总体方程；在基本假设和边界条件基础上，给出笼型感应电动机二维电磁场的求解区域，然后应用有限元并结合内外双收敛方法，对样机稳态运行进行数值计算，得出电机在转子完好、一根导条断裂、连续两根导条断裂、间隔一根两根导条断裂、间隔两根两根导条断裂及连续四根导条断裂六种情况下的磁场分布和导条所受电磁力的变化情况。

Also called a deterministic finite automaton, or simply a finite state machine.

也称为确定性有限自动机，或者只是一个有限状态机。

Although the adjacency matrix was a storage structure of finite automaton in common use, it was not proper to store all kinds of finite automata.

尽管邻接矩阵是有穷自动机的一种常用存储方法，但是，邻接矩阵并不适合存储所有类型的有穷自动机。

The finite element model of base plate is used in modal analysis and transient dynamic analysis by means of the elasticity finite element method.

同时运用弹性力学有限元法对座钣建立的有限元模型进行模态分析和瞬态动力学分析。

Some important factors in finite element analysis, such as the quality of meshing andtime-step, are studied and analyzed deeply, which is the base of correct finite elementcomputation.

对影响有限元分析的有关重要参数(如，网格尺寸、网格比例、时间步长等)进行了深入的研究和讨论，为正确地进行有限元计算提供了重要依据；在模型验证的基础上，分别利用模拟器对裂缝半长、导流能力对产能的影响进行了模拟研究，得出了有意义的结论。

At the same time,the finite element model of base plate is used in modal analysis and transient dynamic analysis by means of the elasticity finite element method.

为了优化发射器座钣的结构设计，采用有限单元法对某型号发射器座钣三维空间板壳结构进行了整体三维建模，同时运用弹性力学有限元法对座钣建立的有限元模型进行模态分析和瞬态动力学分析。

With consideration of various analysis methods for reinforced embankment, the model of homogeneous earth slope is setup on the base of Finite Element Method. Using ANSYS-APDL language, the nonlinear finite element program for static analysis of the high reinforced embankments is made in this paper.

在综合考虑加筋路堤各种分析方法的基础上，利用ANSYS的APDL语言，建立了基于有限元法的加筋路堤参数化模型，编写了对加筋路堤进行稳定性分析的非线性有限元程序，并且综合各种影响因素对加筋路堤结构进行优化设计。

In practice, such systems are simplified as finite dimensional systems, and then treated via existing finite dimensional control theory.

在工程应用中大多采用有限维近似模型，并应用现有的有穷维控制理论进行处理。

Then, the article derives finite element analysis equilibrium equation and element rigidity matrix in use of nonlinear finite element method.

然后运用非线性有限单元法推导了空间铰接杆单元的刚度矩阵和平衡方程。

Based on interval analysis and displacement finite element method, the static displacement response analysis of structure comes down to solve the interval finite element control equation.

现有的理论和方法采用区间分析和位移法有限元理论对其进行分析，最终归为位移法区间有限元控制方程的求解。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。