查询词典 iteration method

The method of constructing arithmetic of oil system steady model for aero engine has been elaborated in this paper, which is based on the analyses of different parts characteristics that show monotone variation relationship and which introduces the notion "balanced calculation" to replace traditional iteration with vector calculus and various interpolation algorithms.

在分析滑油系统部附件的基础上，根据部附件特性单调变化的特点，提出了"平衡计算"的概念，应用向量运算方法和多种插值算法取代传统的迭代算法来构造航空发动机滑油系统稳态模型算法的思路和方法，并用该算法编制程序对发动机在海平面最大状态下滑油系统性能参数进行了验算。

The wave number domain iteration method is proposed for downward continuation of potential fields.

提出了位场向下延拓的波数域迭代法。

The equations of the towed cable motion are based on Ablow and Schechter model and six degree-freedom ordinary differential equations are used in the analysis of the motion of a towed body. The partial differential equations are discretized by finite difference method and the transient values of towed body depth and cable tension are computed by Newton Iteration when the heave compensation system performs and the length of the cable varies.

拖缆动力学模型基于Ablow and Schechter模型，拖体采用水下运载体六自由度方程模拟，运用有限差分法离散偏微分方程组和牛顿迭代法计算变缆长情况下拖体深度与拖缆各点张力的动态取值。

The incremental double iteration method is used to analyze the nonlinear aerostatic stability for long span cable-stayed bridges.

综合考虑了静风荷载和结构自身非线性因素的影响，引用大跨度桥梁非线性静风稳定分析理论，采用增量双重迭代搜索法对大跨度斜拉桥进行了非线性静风稳定分析。

On the convergence of Newton's method in Banach space〓 Let F be an operator mapping from a real or complex Banach space X to another one Y, the Newton iteration 〓(2) is used to find the approximative solution of the equation (1), where the derivative is meant in the Frechet sense.

一、Banach空间中Newton法的收敛性〓设F是由实的或复的Banach空间X到同型空间Y的算子，求解方程(1)的Newton迭代为〓，0，1…，(2)其中的导数指的是在Frechet意义下的。

By using the iteration method,M-matris theory and monotonous theory,the sufficient conditions are obtained for global attractivity and boundedness and persistence of positive solutions of this difference system.

利用迭代理论、M—矩阵理论、单调理论，分析该系统的持久存在性和吸引性，得到了该差分系统一致持久存在和其正解全局吸引的充分条件。

For any initial generalized bisymmetric matrix $X_1$, when $AXB=C$ is consistent, we can obtain the generalized bisymmetric solution of the matrix equation AXB=C within finite iterative steps by the iteration method in the absence of roundoff errors; Moreover, the least-norm solution $X^*$ can be obtained by choosing a special kind of initial generalized bisymmetric matrix.

在不考虑机器误差的情况下，当矩阵方程AXB=C相容时，对任意广义双对称X_1，矩阵方程AXB=C的解可以经过有限步迭代得到；特别地，通过选择特殊地初始广义双对称矩阵极小范数解X^*。

By this iterative method ,the solvability of the matrix equation can be judged automatically.When the matrix equation is consistent ,then,for any initial centrosymmetric matrix pair ,a centrosymmetric solution pair can be obtained within finite iteration steps in the absence of roundoff errors, and the least norm centrosymmetric solution pair can be obtained by choosing a special kind of initial centrosymmetric matrix pair.

当矩阵方程相容时，对任意初始的中心对称矩阵对在没有舍入误差的情况下，经过有限步迭代，得到它的一个中心对称解，并且，通过选择一种特殊的中心对称矩阵对，得到它的最小范数中心对称解。

This rapid continuous inversion method utilize well logging curves to delaminate formation,and integrate auto-delaminate and human-computer interaction delamination to provide reliable initial model for iteration inversion calculation,and in the same time apply resistivity comparison and gamma as the constraint condition to reprocess the data from the inversion, all these improve the precision of this inversion and get the logical resistivity curves of both filter layer and impervious bed.

快速连续反演方法利用测井曲线划分地层，进行自动分层与人机交互分层相结合的方法，为迭代反演计算提供出可靠的初始模型，同时应用电阻率比值、自然伽玛作为约束条件对反演得到的数据进行约束后处理，提高反演的精度，得到合理的渗透层和非渗透层的电阻率曲线，并在理论地层模型和实际测井模型中均进行了测试。

Emulate calculate a watch to understand this method to use calculation precision of parameter of join structure physics is taller, and the result is stable, avoided iteration emanative appearance.

仿真算例表明了该方法用来计算连接结构物理参数精度较高，且结果稳定，避免了迭代发散的现象。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。