约束变量

The multivariable constrained control software packages of some foreign software companies, which all center on predictive control techniques and integrated control, optimization and modeling together, have obtained great successful applications in hundreds of industrial enterprises involved in petrochemical, chemical, oil-refining and steel plants, and created distinct benefits.

国外几家控制与优化软件公司推出的以预测控制技术为核心的多变量约束控制软件包，集控制、优化及建模于一体，在国外获得了极大的成功，为成百上千的工业企业创造了巨大的经济效益，应用遍及石化、化工、炼油、钢铁等领域，成为当今最受关注的控制技术和软件。

The constraints of the missile flying with SAR at the flight time are built, and the missile command acceleration is used as control variables to set up the objective function about the dwell time and the desired azimuth resolution. The control variables are optimized using the genetic algorithm, and an optimal trajectory is gotten.

首先建立了弹载SAR条件下导弹飞行的约束，然后以导弹指令加速度为优化变量，构造了与方位分辨率和波束驻留时间相关的目标函数，采用遗传算法进行寻优，设计得到了弹载SAR平台的优化弹道。

A robust mathematical design model based on the response surface method was established for steering trapezoid mechanism. In the model, movement precision during steering course was chosen as the objective function; kingpins distance, axles distance, trapezoid mechanism's bottom angle and steering arm length were defined as the design variables; minimum transmission angle and maximum angle error were considered as the restraint condition.

对于转向梯形机构，以转向过程的运动精度为目标函数，以主销中心距、轴距、转向梯形底角和转向梯形臂长度四个参数作为设计变量，以最小传动角及最大角度误差作为约束，建立了基于响应面方法的稳健设计数学模型。

On the modeling and optimization platform, models of two types of working mechanisms—reverse-turning six-bar linkage has been generated.

在机械设计研究所自行开发的建模平台上，对反转六连杆机构建立了参数优化模型，确定了变量系统，目标和约束系统，用优化软件进行了优化设计。

So it is necessary to optimize structure of road wheel. Using MSC.NASTRAN to define design variable, determine design object and restrict constraint upper limit to optimize design.

接着MSC.NASTRAN中定义设计变量(分别为轮辋和轮辐的厚度)，确定设计目标，限制约束上限，进行优化设计。

The thickness of shell element is design variable.

本文问题的提法是假设薄板的厚度给定，壳单元的厚度为设计变量，给定约束和荷载的条件下，求加强筋在薄板上布置的几何形状，使薄板结构使用材料最省，满

Response surface methodology was introduced into the cross sectional optimization of truss, in which the stress and displacement constraints were expressed as linear functions dependent on the reciprocals of cross sections.

把响应面方法引入桁架截面优化中，将应力和位移约束近似表达为桁架截面倒变量的线性函数。

At the rear was an innovative combination transaxle with the gearbox, clutch, differential, and inboard-mounted drum brakes.

在后面是与变速箱，离合器，差的创新结合变速，和内侧安装鼓式制动器。

For more people can apprecaite and have the master work, there is reproduction painting appears in the market, the large various selection of paint,the high saturation of color plus the plentiful sfumato, to make the reproduction perfect copy and detail as original painting, so as to meet the requirment of amateurs who love art paintings,they do not need to pay high price to get classical paintings.

颜料色域广，色彩饱和度高，色彩层次丰富，图像色彩还原真实，能完美的复制原作，满足艺术爱好者欣赏，艺术爱好者们不用支付昂贵的价格就能拥有经典油画。