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Multi-processing based computer-aided design systems for real design problems

基于多处理的计算机辅助设计系统，解决实际设计问题

基本信息

批准号：
07555055
负责人：
AKAGI Shinsuke
金额：
$ 10.62万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

项目摘要

This project studied multi-processing based computer-aided design systems for real design problems. While the computer support is getting to play more important and essential roles in the product development, the direction of computer technologies shifts from high-speed single CPU systems to multi-processing systems with plural CPUs. The new type of design technology will be necessary to cooperate with such direction for meeting the increasing demands on design automation and so forth. Under this circumstance, we developed a distributed modeling method of design object and design process, an agent-based distributed design system, and several optimization methods which are implemented with multiple CPUs. The research results are summarized as follows :1.Since real design problems include multi-disciplinary and multi-grained information, any distributed modeling method of design object and design process is indispensable. Configuration, which is a set of declarative conditions between sy … More stem components and geometric entities, is effective as a media of the modeling method. It has an ability for facilitating computer-supported concurrent engineering.2.A computer-supported concurrent engineering environment can be established with agent-based knowledge engineering technique. The computer system is implemented via socket communication over a workstation cluster.3.Since the real design problems have ill-posed characteristics such as a large number of combinatorial conditions, multi-modality, nonlinearity, computational expense in simulation calculations, etc., the combination of genetic algorithms and multi-CPU implementation is successfully applied to the energy plant configuration design problem, the vehicle power train optimization design. Also, a modeling procedure and a decomposition-based optimization method for complicated system design problems are studied, respectively.These results show the feasibility of multi-processing techniques in large-scale design applications. Moreover, they clarify the research direction of multi-processing based computer-aided design systems. Less

本计画针对真实的设计问题，研究以多重处理为基础的电脑辅助设计系统。随着计算机支持在产品开发中发挥越来越重要的作用，计算机技术的发展方向从高速单CPU系统转向具有多个CPU的多处理系统。为了满足设计自动化等日益增长的需求，新型的设计技术将是必要的。在此背景下，我们提出了一种设计对象和设计过程的分布式建模方法，一个基于Agent的分布式设计系统，以及几种在多CPU上实现的优化方法。1.由于真实的设计问题包含多学科、多粒度的信息，任何分布式的设计对象和设计过程建模方法都是必不可少的。配置，它是系统之间的一组声明性条件。 ...更多信息干元件和几何实体，是一种有效的作为介质的建模方法。2.利用基于Agent的知识工程技术，可以建立计算机支持的并行工程环境。3.由于真实的设计问题具有组合条件多、多模态、非线性、仿真计算计算量大等不适定特征，将遗传算法与多CPU实现相结合，成功地应用于能源装置配置设计问题、汽车动力传动系优化设计问题。研究了复杂系统设计问题的建模过程和基于分解的优化方法，验证了多处理技术在大规模设计应用中的可行性。同时也为基于多处理的计算机辅助设计系统的研究指明了方向。少