查询词典 optimization

A class of bilevel multi-objective programming was converted into the problem of equivalent single-level multi-objective programming. Then a new chaos genetic optimization algorithm was presented by using the inversion property of genetic algorithm and the ergodic property of chaos optimization method and combining with the exact l_1 penalty function.

针对求解一类二层多目标规划问题，首先将其转化为等价的单目标规划问题，然后利用遗传算法优化的反演性和混沌优化方法的遍历性，并结合精确罚函数求解非线性约束优化问题，提出了求解此类问题的混沌遗传算法。

In this paper, we construct the differential equation to solve the unconstrained optimization problem. Such methods solving the ill-conditioned problems are very effective. It indicates that the asymptotically stable region of explicit the Euler method to solve the differential equation equals to the descent region of the gradient method to solve the original unconstrained optimization problem.

我们发现，在用Euler方法求解二次优化问题的等价动力系统的方程时，由方法的步长确定的稳定区域对应于这些方法所得到的迭代公式的步长满足单调下降算法的条件确定的单调下降区域，因此我们可以利用这个性质构造解无约束优化问题的数值方法而不采用标准的常微分方程的数值求解公式。

And established the mechanics model,optimization parameter model,optimization mathematics model for the elastic element of the extensometer,programs analysis file and optim...

以应变计式引伸计弹性元件的结构优化为例，建立了引伸计弹性元件的力学模型、优化参数模型、优化数学模型，用ANSYS的参数化设计语言编制了分析文件和优化控制文件，经计算获得最优结果。

The particle swarm optimization combined with the immune calculated extremal function optimization.

详细说明：将粒子群算法与免疫结合，计算函数的优化极值。

Moreover by orthogonal optimization the culture condition and the culture medium were investigated,then the result of optimization was used to fermentor.

另外利用正交法对spMF0507的培养基组成和发酵培养条件也进行了研究，之后把发酵优化结果投入5升发酵罐进行验证。

On equipments of system, this paper, making use of the finite element analysis function of CATIA V5, make Optimization analysis of the key components of the core equipments in the system, such as the side platen and the roller axis, and bring optimization Solutions.

在系统设备方面，本文运用CATIA V5的有限元分析功能，对系统中的核心设备——辊压机的侧压板和压辊轴等关键部件进行了优化分析，并提出优化改进方案。

With the elements such as finite element model and optimization mathematics model enveloped by the software, it could make the common designer unfamiliar with the ANSYS and optimization use it.

通过软件封装有限元模型、优化数学模型等要素，即使对于ANSYS和优化不熟悉的普通设计人员也能使用。

By means of combining the structure analysis of finite element with optimization algorithm,the finite element model and optimization mathematics model of the multi-serial uniform load thrust bearing were established by APDL.

将有限元结构分析与优化算法相结合，应用APDL建立了多排均载推力滚子轴承的有限元模型及优化数学模型。

Using numerical simulation technology and method of orthogonal experiment design and single factor rotating optimization, this thesis makes a study of "lost core injection ", thus achieve the optimization of the parameters of molding process, to offer basic reference when developing production technology and mould of the plastics intake manifold. Based on the study of the status in quo and development trend of weight reduction on automobile, the application of plastics to automobile and intake manifold, then under the guidance of theory model and numerical simulation technology in the process of high polymer material, this thesis launches flowing main research work: First of all, on the basis of the three-dimensional model of the part and finite element net model, several designs of gating and running system are numerically simulated and analyzed via MPA of Moldflow.

本文在对当今汽车轻量化、零部件塑料化以及的汽车进气歧管塑料化的发展现状和发展趋势进行了研究和简要介绍，然后在高分子材料成型过程中的理论模型和数值计算方法的指导下，展开主要的研究工作：首先，在零件三维模型和有限元网格模型的基础上，使用Moldflow 的MPA模块对塑料进气歧管的多个浇注系统设计方案进行数值模拟，通过分析各个方案的充填质量、熔接线位置及数量等指标，得到了综合质量较高的4 个进料口的浇口位置及半限制型浇口大小的浇注系统。

Evolutionary structural optimization; fixed grid finite element; shape optimization of cutouts in composite plates and shells; design of tunnel support

渐进结构优化；固定网格有限元；复合材料板壳开孔形状优化；洞室支护设计

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。