查询词典 discrete optimization

Meanwhile discrete optimization module is developed with PCL language based on Nastran software and several examples are optimized.

同时在MSC公司的Nastran软件平台上利用其 PCL语言开发出优化模块，并进行了算例的优化设计。

According to the characteristic of the discrete variable structure, the optimization of the space truss is analyzed by the difference-quotient-method.

针对离散变量结构的特点，本文采用差商法对网架结构进行优化设计。

Keywords: Quality performance,Process efficiency optimization, Time-variety discrete process,E-procurement strategy

中文关键词：质量绩效，过程效率优化，时变离散过程，电子采购策略

The TVC array model is established, and the relationship between TVC and flight coefficients is analyzed. By means of the discrete quadric programming method, the optimization of TVC scheme is made.

建立了推力矢量控制阵列模型，分析了推力矢量控制与飞行参数之间的关系，并基于离散二次规划法对推力矢量控制方案进行了优化。

Through careful analysis of the mathematics model of daily dispatching optimization of the cascade hydropower station, a new method based on the combination of two dimensional dynamic programming and discrete differential dynamic programming is proposed.

通过仔细分析梯级水库日优化调度的数学模型，提出了一种基于二维动态规划和离散微分动态规划相结合的混合求解策略，该策略理论上严谨，计算时间比较短，能满足日常调度的需要。

The optimization of the water resource systems is performed by discrete differential dynamic programming and the flood routing for lakes, canals, sluices and pumping stations can be done by using simulation technique in the state transition process.

本文介绍一种动态规划与模拟技术相结合的算法，用离散微分动态规划法进行择优计算，在状态转移过程中用模拟方法进行湖泊、河道、排水闸、抽排站等各项工程的水利计算。

Due to the discreteness of transformer taps and the switching of shunt capacitance/reactance banks, the rigorous reactive power optimization is the problem of Mixed-Integer Nonlinear Programming involving both discrete and continuous variables.

在电力系统无功优化过程中，由于有载调压变压器分接头的存在和补偿电容／电抗器分组投切的离散特性，使得严格意义上的无功优化问题成为一个离散变量和连续变量共存的混合整数非线性规划(Mixed-Integer Nonlinear Programming，MINLP)问题。

Ant algorithm has successfully solved a series of difficult discrete optimization problems.However,its convergence is quite limited.

0引言蚂蚁算法是一种新型的进化算法，已证明其对TSP问题有很好的解决能力[1-3]，但却有容易陷入局部最优的缺陷。

The numerical non-stability of a discrete algorithm of topology optimization can result fi＇om the inaccurate evaluation of element sensitivities, especially, when material is added to elements.

单元敏度的不准确估计是离散拓扑优化算法数值不稳定的原因之一，特别是添加材料时，传统的敏度计算公式给出的估计误差较大，甚至有时估计符号都是错误的。

Taking a heavy truck cab as the example, a model of the spotweld space based on finite element was built to analyse the torsional stiffness of the model, and the amount and layout of the spotweld using the discrete variable topology optimization were optimized. Comparing with the original model in welding spot's number and the torsional stiffness, the optimized model has less number of welding spot, but the torsional stiffness of the two model is almost the same.

以某重型卡车驾驶室为例，在有限元模型基础上建立焊点空间模型进行扭转刚度分析，并采用离散变量拓扑优化方法对焊点的数量及空间布局进行优化，通过优化前后的对比可知，优化后在不降低扭转刚度的同时减少了焊点数目。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。