查询词典 constraint

Nonholonomic constraint is the constraint that contains time derivatives of the generalized coordinates of the system and is not integrable.

非完整约束是指含有系统广义坐标导数且不可积的约束。

The profile is represented by three links: geometrical element link, topological constraint link and dimensional constraint link.

轮廓描述由三部分组成：几何描述、拓扑约束描述和尺寸约束描述。

Firstly, four geometric loop equations are set up by using vector method in complex number fields. Secondly, three constraint equations are used to construct the Dixon resultants, which is a 6×6 matrix and contain two variables to be eliminated. Extract the greatest common divisor of two rows and two columns of Dixon matrix and compute its determinant to obtain a new equation. This equation together with the forth constraint equation can be used to construct a Sylvester resultant.

首先使用矢量法和复数法建立4个几何约束方程式；再使用Dixon结式法对3个方程式构造一个含有2个变元的6×6 Dixon矩阵，提取其中2行列元素的公因式，将新矩阵的行列式展开后得到二元高次多项式方程，该方程与剩下一个方程使用Sylvester结式消去一变元，得到一元高次方程。

The contact constraint conditions of the contact-impact model are described by the velocity field, so that it can satisfy the physical impenetrability constraint better and decrease the oscillation of the numerical algorithm.

本文接触—冲击有限元模型，以接触面速度场施加接触约束，不仅更符合物理上非刺穿条件，而且可以减小冲击接触算法振荡。

Finally, in order to enforce the given inequality constraint, a constraint transformation method for the marked graphs is proposed due to accounting for uncontrollable transitions in the net.

最后，本文还研究了在由标识图建模的DES的框架下，为了实现给定的不等式约束而必须考虑Petri网中不可控变迁的影响而进行的约束变换的方法。

This paper presents some approximate algorithms for minimax nonlinear programs with inequality constraint s by using maximum entropy method and algorithms relevant to nonlinear programming with inequality constraint s,and convergence theorems concerning these algorithms are given.

结合极大熵方法与不等式约束非线性规划的有关算法，提出了求解不等式约束极小极大非线性规划的一种近似法，并讨论了算法的有关收敛

Moreover, A very general optimization problems with a complementarity problem constraint, a inequality and a equality constraints, and an abstract constraint are studied.

最后，我们应用Mordukhovich广义导数方法，在较弱的约束规范性条件—静态条件下，研究当f，g，h，G，H为非光滑函数时，互补约束的优化问题的最优必要性条件。

The registration model with geometric feature constraint is composed of 6-parameter-registration model and constraint condition linear inequation, which is calculated by iterative algorithm.

在6独立参数模型中增加几何特征约束的不等约束条件组成了附有约束条件的配准模型。

The problem of sub-Riemannian geodesics is a Lagrange problem with constraint. How to describe the constraint condition "γ'∈ D, a. e." is a difficult problem.

次黎曼测地线问题是变分学中的一个有约束的Lagrange问题，但在变分的过程中有个难点―如何推出约束条件"γ'∈D，在上几乎处处成立"的解析式。

The wavelet analytic method can find out global and local singularity and singular points of function by local maximum of wavelet transform of Lagrangian function which is made up of two constraint functions without regard for contents of optimization and constraint situation.

不管优化内容及约束情况如何，由对约束函数两两构成的拉格朗日函数的小波变换求局部极大值，将奇异点求解出来。本文对n维空间的小波变换寻优方法给予了理论上的研究与证明，并给出了具体的求解方法。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。