工程设计

Engineering design problems have two characteristics: the design variables are often monotonic in the objective function and constraints. Moreover, the objective function and constraints are often implicit functions which cannot be expressed explicitly in terms of design variables.

工程最佳化设计问题通常有两个特性：设计变数在目标函数与限制条件常具有单调性，且其目标函数与限制条件常为内隐式函数，也就是不能以设计变数来表示其外显形式。

From power load,power supply,indoor distribution system,illumination,weak-current design,distribution board,ground protection,lighting protecti on design and other aspects electrical design of multistoried house is discussed in order to meet new requirements on housing project.

从住宅用电负荷，住宅供电，户内配电系统，照明、插座布置，弱电设计，配电箱、开关、插座的安装，接地保护，防雷设计等方面对多层住宅电气的设计进行了探讨，以满足住宅工程的新需求。

This design is just for the Automatic Fire Alarming System of The Building of Xiamen Institute of National Accounting.

本设计是针对***行政楼的火灾自动报警系统设计，对其进行了设计、计算并进行工程预算。

Hongsheng the company's business scope mainly include: Design --- Graphic Design, Exhibition Design; Decoration Engineering --- commercial space, office space, oriented system; Printing --- Product samples.

宏盛公司业务范围主要包括：设计制作---平面设计、展示设计；装饰工程---商业空间、办公空间、导向系统；印务---产品样本等。

Prevision of education is very significant for engineering system of high education to adapt to the fast development of the advanced manufacture technology and mode,to satisfy the needs of high making persons for manufacturing modernization.

工程制图》课程是一门技术基础课，它是工科院校介于基础课和专业课之间的桥梁，它直接影响着学生的专业课、课程设计、实习和毕业设计等一系列的后续课程的学习，同时，它也是学生毕业以后从事科研、设计以及生产工作必备的基础知识之一。

According to the problems in designer's illumination design, the principle and notice of illumination energy saving design were introduced.

针对电气设计人员在照明设计工程中遇到的问题，系统地介绍了照明节能设计应遵循的原则和注意事项。

However, there is discrepancy between actual construction and design i tself, so that local residential building consumes a lot of energy, which surpass the energy-saving standard.

在住宅设计时虽然也要求填写建筑节能设计备案表，但实际的工程与设计又有很大的出入，致使当地住宅建筑能源消耗量大，远远超过节能标准的要求。

The PID parameter tuning of non-linear control system is set as the engineering background. The aim is the optimal design of PID parameter. On the basis of the design and research of the advanced PID parameter tuning, the mathematical model-transfer functionis developed through correlation analysis on statistical method.And with the optimization algorithm under constraint condition, the non-linear, Isqnonlin is set as object function. Then with connection of the non-linear constrain optimization algorithm and simulink technique, a set of adjust parameters which fit the performance index of the control system are found. And optimization design process and steps are provided.

本文以非线性控制系统PID参数整定为工程背景，以PID参数的优化设计为目标，在分析和研究国内外PID参数先进整定方法的基础上，运用相关分析实验统计方法建立对象的数学模型——传递函数，把PID参数设计问题转化为一种非线性优化设计问题，借助于约束条件下的优化算法，以非线性最小平方指标为目标函数，将非线性约束优化算法同Simulink仿真技术相结合，找出符合控制系统品质指标的一组调节参数。

This paper presents the mathematical model for the optimization of heterogeneous components, and the method using sensitivity analysis and steepest descent method to optimize material properties, the component is then identified.

阐述了非均质材料零件设计优化的数学模型，并采用灵敏度分析以及最速下降法对其各个材料区域的材料性能进行设计优化，得到最佳材料性能参数后，再从非均质材料数据库中找到相应的工程材料，合成满足设计要求的非均质材料零件该方法为设计者提供了切实可行的非均质材料零件的材料设计方

The article introduces the interrelation between superelevation transition section and transition curve,and proposed the specific calculating method.

结合《公路工程技术标准》、《公路路线设计规范》等平面线形设计中设置缓和曲线的目的，介绍了超高过渡段和缓和曲线之间的相互关系，并提出进行超高设计的具体计算方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。