The commonly used designing flow and basic technology of integrated circuit , such as the cell layout , synthesis , simulation , fpga verification , automatic layout & routing of the digital circuit , are introduced and analyzed in detail . the layout designing and simulation of the analog circuit are also introduced and analyzed in detail 论文对集成电路常用设计流程和基本技术作了详细介绍和分析，其中包括数字电路的基本单元版图、综合、仿真、 fpga验证和自动布局布线，也包括常用模拟电路的版图设计和仿真。
The paper demonstrates the architecture of the three - dimensional component packing system which is built up by six modules : the interface based on autocad , the manage module of system , the input and construction of packing component module , automobile packing module , output module , and the autocad graphic database 设计了三维自动布局系统的体系结构。系统的体系结构包括六部分： autocad平台上的用户界面、布局系统管理模块、布局物体输入创建模块、自动布局模块、布局系统输出模块、 autocad图形数据库。
Lastly , by utilizing the production line balance theory , the automated layout software developed in this paper is used to implement the design of the assembly - welding line of a automobile factory , including the production line design and optimization , robot layout , process design , and overall layout optimization 最后,通过应用生产线平衡理论,并结合本文开发的自动布局软件系统,实现了某汽车制造厂装焊车间的生产线优化设计、机器人工作站设计、主要工序设计、以及设备布局优化。
On the other hand , we accomplished the asic design flow successfully based on the fpga design . we have made the most use of various optimization methodology and simulation tools include dynamic simulation , static timing analyzing and post simulation . at last this design net list was past to layout design team in order to check its electronic characters 在我们的asic流程中,首要的因素是在fpga验证其正确性的基础上对速度与面积进行科学有效的平衡,在成本和性能中间取得良好的结合点,运用先进的eda设计工具和算法对设计进行综合优化( synthesis ) ,动态时序分析( dynamicsimulation ) ,静态时序仿真( sta )到自动布局布线( apr )之后将寄生参数反标回前面的步骤进行更精确的判断和分析,最后交给版图设计人员进行版图设计和优化。
The effective optimize technology , the expression and management of packing solid are the two key technologies for solving this problem to utilize existing literature , a packing system is developed on the basis of autocad with simulated annealing algorithm ( sa ) , which is propitious to general three - dimensional packing problem 有效的优化技术，对布局实体的表示和处理，是解决三维布局问题的两个关键。本文论述了在现有研究成果的基础上，采用适合于解决一般性三维布局问题的模拟退火算法，在autocad图形系统上开发用于解决任意形状三维物体布局问题的自动布局系统。
The criteria used by such software are more closely related to " node " theory and aesthetically pleasing rows of components ( which , admittedly , are also easier on automatic component placing machinery ) than to optimizing stray inductance and capacitance and minimizing common ground impedance 这类软件的算法十分接近“节点”理论，在元器件布局方面追求“横平竖直”式的美观大方（显然，对于自动布局算法而言这样也比较容易） ，但是却不怎么考虑如何优化分布电感和分布电容，如何降低器件的接地阻抗。
In this paper , the planning and design of an automobile assembly - welding line is conducted according to the specific requirement on production streamline and process of automobile assembly - welding production . the design is optimized centered by work - load balance and workshop layout . a small - scale automated layout software is also developed targeting at the design and optimization of automobile assembly - welding line 本文根据汽车装焊作业特定的生产流程和工艺要求进行了装焊生产线规划设计,并围绕生产线平衡问题和设备布局问题进行了设计优化,开发了相应的面向汽车装焊车间设备布局优化的小型自动布局软件系统。
