约束优化

The development of perimeter control of the checkerboard involved in structure topology optimization of multiphase materials is presented.

针对多相材料结构的拓扑优化出现的棋盘格问题，研究了周长约束控制方法。

Taking the layout problem of satellite cabins as background, the authors make a study of the optimal layout problem of circle group in a circular container with performance constraints of equilibrium etc.

该文以人造卫星舱布局为背景，研究二维带平衡及不干涉等约束的圆集在圆容器内的布局优化问题，属于NP-困难问题。

The center coordinates of the n circles can then be obtained. The problem is reduced to a nonlinear constrained optimization problem of finding the minimum circumscribed circle for the n central points through regional optimization.

为求这平面点列的最小包容圆，将问题转化为非线性约束最优化问题，通过分区优化搜索算法求解目标。

At the same time, the minimal area term has the global optimize characteristic, which can detect all the contours inside the object with one initial closed curve.

同时，该约束项具有全局优化的特点，仅需要一条初始闭合曲线，就可以将内部带空洞目标的内外边缘全部检测出来。

By taking fuzzy performance index as objective function and taking codomain of design parameters and limiting performance index as constraint conditions, an optimization mathematical model is formed.

以模糊化的性能指标为目标函数、以设计参数的取值范围及极限性能指标为约束条件，建立优化数学模型。

This method can be used to reduce power dissipation of combinational logic.

本文通过上述问题的研究，在设计流程的不同阶段解决自测试设计的测试功耗问题：在高层综合阶段，引入功耗约束和模块随机响应模型，自动生成低测试功耗、低面积开销的RTL电路结构；在逻辑综合阶段，针对测试功耗分别优化了电路结构和测试向量生成电路，以微小的故障覆盖率和面积开销为代价，最大程度降低测试功耗。

From the view of mathematics, it is a NP-hard combinational optimization problem with constraints and it is difficult to find the global optimal solution in theory.

从数学上讲，机组投入问题是一个多约束的NP-hard组合优化问题，很难得到理论上的最优解。

With all kinds of operation restrictions, it is a typical nonlinear integer combinative optimum problem.

在满足各种运行约束条件下，以网损最小或可靠性最高为目标的配电网重构问题是一个典型的非线性整数组合优化问题。

Treated as a synchronous datapath, the 4 phase bundled-data pipeline can be compiled top-down and with timing constraints. The full-custom C-elements are used in it and regarded as combinatorial gates during timing analysis. Circuit synthesized using this methodology will be better.

通过将4相位捆绑数据寄存器流水线数据通道等效为一个同步流水线，可以自顶向下地进行有时序约束的综合，采用全定制C单元，并把其当作组合逻辑门进行分析，综合出的电路更加优化。

In this paper the features of constructional details and behaviors of double thin-wall piers of continuous rigid frame bridges were firstly analyzed. According to the condition of deformation compatibility, a relationship between the inner forces on the coping of pier and the single inner forces of the double thin wall pier was established.

本文首先从双薄壁墩的结构和受力特点出发，根据主梁与双薄壁墩的共同变形协调条件，建立墩顶内力与双薄壁桥墩单墩内力之间的关系，考虑强度和稳定约束，建立基于通用有限元程序的双薄壁墩墩中距和壁厚的优化数学模型。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。