参数化

By using the full parametric finite element numerical simulation,a series of data is obtained,and the relationship between the stress and structure parameters of plate-fin is analyzed.

通过全参数化的有限元数值模拟，获得了一系列数据，分析了翅片和隔板中应力与结构参数的关系，结果表明翅片和隔板中应力值较原经验公式的计算值小，尤其是隔板中的应力与原公式的规律也存在明显差别。

Cloud optical thickness and effective particle radius are the important parameters to parameterize the cloud optical properties.

中文摘要云的光学厚度与有效粒子半径是云光学属性参数化方案中的重要参数。

Based on the new explicit parametric solution to the generalized Sylvester matrix equation, a parametric approach for eigenstructure assignment via output feedback is proposed.

基于广义Sylvester矩阵方程新的显式参数解，提出了输出反馈特征结构配置的一种参数化方法。

Based on the parametric solutions of a Sylvester matrix equation, the parametric expressions of the gain matrices of synchronization dynamic observer in the nonlinear feedback chaotic systems are presented, in which the parameter vectors offer all the design degrees that can be selected to satisfy some performances, such as robustness.

基于Sylvester矩阵方程的参数化解，给出了非线性反馈混沌系统的同步动态观测器矩阵的所有参数化表达式，其所含参量为混沌系统控制设计提供了全部自由度，可适当选择自由参量满足某些鲁棒性指标。

Based on the parametric eigenstructure assignment result for descriptor second-order systems, the parametric expression of the optimization index is obtained.

根据广义二阶动力学系统基于状态加微分反馈的参数化特征结构配置结果，给出了优化指标的完全参数形式。

Based on a general parametric eigenstructure assignment result proposed for descriptor linear systems via proportional plus partial derivative state feedback and a result for generalized eigenvalue sensitivity problem of matrix pairs, parametric representation of the closed-loop eigenvalue sensitivities to the perturbed elements in the open-loop system matrices is obtained. An effective algorithm for eigenvalue assignment with minimum sensitivity in descriptor linear systems via proportional plus partial derivative state feedback is then proposed.

摘要基于广义线性系统比例与部分状态导数反馈参数化特征结构配置结果和矩阵对广义特征值灵敏度结果，得到了关于开环系统矩阵中摄动元素的闭环特征值灵敏度的参数表达式，并在此基础上提出了广义线性系统比例与部分状态导数反馈最小灵敏度特征值配置的有效算法。

A new method was proposed to maximize the effective figure of thermoelectric cooling device through introducing micro scale cooling at its hot end. A theoretical model was established to characterize such operational behaviors. Parametric studies were performed to test the effects of using various possible ways to improve the cooling capability.

提出一种借助于在热电冷却器热端引入微尺度冷却，以提高其制冷性能参数的新方法，并建立了相应的理论模型来刻画该过程，并在此基础上对各类有助于提高制冷性能的潜在途径进行了参数化研究。

By using the basic method of virtual design and motion simulation of mechanical system based on Solid Works, virtual design of the robot of excavating tree stump was completed by synthetically using parametric and variable modeling technology and top-down design method. In case of the carrier was changed, the COSMOSMotion2006 was used to perform the motion simulation and optimized the parameter of the interface and the mechanical arm, by this way the useable of the new frameworks was confirmed, and in favor of reduce the exploiting cycle and exploiting cost.

通过使用SolidWorks软件的机械系统虚拟设计和运动仿真的基本方法，综合运用SolidWorks的参数化、变量化建模技术以及自上向下的设计思路，完成伐根清理机器人及其行走底盘的虚拟建模，并对由于行走底盘的改变而重新设计的接口和机械臂采用最新的COSMOSMotion2006软件进行了运动仿真和参数优化，以确定其机构可用性，有利于缩短产品的开发周期和减少开发费用。

In this paper dimension-chain is used to calculate the last effective dimension formed under the influence of tolerances and other distortions. Feature modeling is applied to construct the three-dimension mode of the parts in solidworks. Based on the parametric design function, simulation of assembling result is realized by making use of VB to develop Solidworks. The accomplish of variable parametric design system in tolerance designing is realiazed.

运用尺寸链技术计算出零件在公差及其他变形影响下的最终作用尺寸，利用solidworks中特征建模方法建立起装配体的三维模型，并根据该软件的参数化设计功能，利用VB对其进行二次开发，模拟了装配结果，实现了变参数设计方法在公差设计评价技术上的应用。

After the two steps,the toroidal parametrization can be obtained effectively.

本文最后一章给出了基于隐参数曲面表示理论的封闭曲面参数化方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。