热力系统的计算机集成设计系统

为帮助热力系统的设计人员快速、准确地掌握复杂系统的动、静态特性，保证热力系统的优化设计和安全运行，研制了高起点、多功能的热力系统仿真研究系统－清华计算机集成设计系统（ＴＨＣＩＤＳ），它由建模系统、仿真研究集成环境、数采与测试系统、可视化环境与仿真器开发四部分组成。该系统采用了图形化及模块化建模、计算机网络等新技术和方法，可以进行热力系统的设计、方案比较、系统特性研究、控制系统的设计、控制规律和策略的研究以及软硬件的测试等，并具有良好的开放性和可扩充性。

利用PSPICE程序对模拟集成电路参数进行分析设计

给出了利用 PSPICE程序对 AIC参数分析设计的新方法 ,以达到在 AIC生产过程中 ,对其参数的预测分析 ,找出影响参数元件的选值 ,从而达到优化设计的目的 ,同时它也可以作为模拟生产过程质量控制的方法。

CAD/CAE软件在汽车塑料内饰件模具造型设计中的应用

塑料是汽车内饰件制造的主要材料之一,而注塑模具设计工作对注塑零件的成型质量和尺寸精度有着重要影响。在简述了国内外计算机辅助技术在模具设计领域应用现状的基础上,提出了基于知识定向化、参数化、模块化和基于特征元素设计的CAD/CAE模具设计系统,该系统服务于塑料零件的注塑成型过程和模具设计过程,为基于数值分析技术的注塑产品分析仿真系统的开发提供了新的方向和可能性。

换热式高效旋风除尘器三维参数化设计

这里基于SolidworksAPI的二次开发,研究总结了Solidworks参数化设计的方法和过程,并以换热式高效旋风除尘器旋风子三维参数化设计为例,提出了一套新产品开发和产品系列化的先进、快捷的集成型计算机辅助设计方法。

热油载体锅炉对流管束三维参数化设计

文章基于SolidworksAPI的二次开发,研究总结了Solidworks参数化设计的方法和过程,并以热油载体锅炉对流管束三维参数化设计为例,提出了一套新产品开发和产品系列化的先进、快捷的集成型计算机辅助设计方法。

智能设计综述

依据前人在智能设计方面所取得的成果,从总体上对智能设计的发展、概念、内容、特性以及构建智能设计系统的方法进行了综述,并列举了一个关于智能设计系统开发和应用比较成功的例子。

Adaptive Layout Partitioning for Dark Field Alternating Phase-Shift Mask Design

A new partitioning methodology is presented to accelerate 130nm and beyond large scale alternating phase shift mask(Alt PSM) design flow.This method deals with granularity self adaptively.Phase conflicts resolution approaches are described and strategies guaranteeing phase compatible during layout compaction are also discussed.An efficient CAD prototype for dark field Alt PSM based on these algorithms is implemented.The experimental results on several industry layouts show that the tool can successfully cope with the rapid growth of phase conflicts with good quality and satisfy lower resource consumption with different requirements of precision and speedup.

A version management model of PDM system and its realization

Based on the key function of version management in PDM system, this paper discusses the function and the realization of version management and the transitions of version states with a workflow. A directed aeyclic graph is used to describe a version model. Three storage modes of the directed acyelic graph version model in the database, the bumping block and the PDM working memory are presented and the conversion principle of these three modes is given. The study indicates that building a dynamic product structure configuration model based on versions is the key to resolve the problem. Thus a version model of single product object is built. Then the version management model in product structure configuration is built and the application of version management of PDM syster is presented as a case.

浅析结构CAD在信息时代的发展

本文在总结传统ＣＡＤ现状的基础上，分析了信息时代在土木工程领域的ＣＡＤ的特征及其发展趋势．

Model Construct Based Enterprise Model Architecture and Its Modeling Approach

In order to support enterprise integration, a kind of model construct based enterprise model architecture and its modeling approach are studied in this paper. First, the structural makeup and internal relationships of enterprise model architecture are discussed. Then, the concept of reusable model construct (MC) which belongs to the control view and can help to derive other views is proposed. The modeling approach based on model construct consists of three steps, reference model architecture synthesis, enterprise model customization, system design and implementation. According to MC based modeling approach a case study with the background of one-kind-product machinery manufacturing enterprises is illustrated. It is shown that proposal model construct based enterprise model architecture and modeling approach are practical and efficient.

A Design of ABC95 Array Computer Multi-function Interconnection Chips

ABC95 array computer is a multi-function network computer based on FPGA technology. A notable feature of ABC95 array computer is the support of complex interconnection, which determines that the computer must have enough I/O band and flexible communications between Pes. The authors designed the interconnecting network chips of ABC95 and realized a form of multi-function interconnection. The multi-function interconnecting network supports conflict-free access from processors to memory matrix and the MESH network of enhanced processors to processor communications. The design scheme has been proved feasible by experiment.

Single Platform Integration Environment for Turbine Rotor Design and Analysis

The present article covers briefly state of the art software interoperability technical solutions and the development of the first module of a new single platform D ＆ A （design ＆ analysis） tool for simulation and prediction of stress and burst behavior of turbine rotating disc a preliminary design stage. This platform singularity requires integration of multiple CAD （computer assisted design） ＆ FEA （finite element analysis） tools processing in batch mode and driven from a SPIE （single platform integration environment）. This first module is also to demonstrate, for an axial turbine disc hub axi-symmetric component, feasibility and usefulness of such a platform at preliminary design stage. Expected benefits of the D ＆ A single platform are to improve output accuracy, reduce cycle time, improve process quality and improve resource productivity.

各种规模集成电路

Y2000-62093-V-306 0012749平方根域系统合成用的系统方法=A systematic ap-proach to the synthesis of square-root domain systems[会,英]/Lopez-Martin,A.J.& Carlosena,A.//1999IEEE International Symposium on Circuits and Systems,Vol.5 of 6.—V.306～V-309(PC)Y2000-62123-162 0012750超大规模集成电路=Session 10:VLSI[会,英]//1999IEEE Pacific Rim Conference.—162～176(PC)本部分收入4篇论文。

热动力系统可视化仿真平台研究

为了减少热动力系统仿软件的开发周期和开发费用，研究开发了一种新型热力系统可视化仿真软件开发平台。该平台完全基于Ｗｉｎｄｏｗｓ操作系统，通过集成各种最新的计算机技术和热动力系统建模技术，给热动力系统设计人员提供了一个灵活方便的图形化建模环境。在该环境里，可以完成系统方案研究和系统动静态性能分析，可以进行控制系统的优化设计和实际系统的测试，并且还可以完成对复杂热力系统的仿真。