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Conceptual design tools for the creative synthesis, analysis, and redesign of mechanisms--MECXPERT (mechanism expert).

机译：用于机制的创意合成，分析和重新设计的概念设计工具-MECXPERT（机制专家）。

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摘要

Based on the perceived importance of relating the function of a mechanism to its structure, it behooves us to develop an approach for representing "intelligent" design concepts in a form suitable for computer representation and manipulation, in an attempt to automate the process of mechanism synthesis and design. The underlying mathematical theory applicable to the representation of structure in general, and in particular that of mechanisms, is graph theory. Graph theory provides a compact and complete mathematical medium for representing the structure of mechanisms. Its ability to retain functional information, on the other hand, requires additional work to expand its present limited applicability.; In developing knowledge-based approaches to mechanism design, two solution strategies have been elected for use. The first is based on forward-design reasoning, and the second is based on backward-design reasoning. Both approaches rely on searching through a tree or "space" of potential solution nodes or "states".; The primary advantage of forward design reasoning is its ability to enumerate, in a systematic and unbiased manner, the structures for all mechanisms having the potential to satisfy prespecified design requirements. The disadvantages of this approach are that it is not guaranteed to produce a solution, and it may require somewhat lengthy design times.; The primary advantage of backward design reasoning is its ability to guarantee a solution to a mechanism design problem provided the desired solution state has been previously introduced into the system. To be of sufficient use, this approach requires the development of a large knowledge base of information having the ability to describe mechanisms.; Knowledge-based approaches to mechanism design have the potential to advance existing design methodologies, such that more creative designs can be achieved in a systematic manner. This doctoral dissertation provides some insight into the use of "intelligent" or knowledge-based approaches to mechanism synthesis, analysis and design. The concepts conveyed and the prototype software developed in this thesis, it is believed, will establish the computational architectures for the next generation of CAD tools for mechanism design.
机译：基于将机制的功能与其结构相关联的重要性，我们应该开发一种以适合于计算机表示和操纵的形式表示“智能”设计概念的方法，以尝试使机制综合过程自动化和设计。适用于一般结构表示，尤其是机制表​​示的基础数学理论是图论。图论为表示机构的结构提供了紧凑而完整的数学介质。另一方面，其保留功能信息的能力需要额外的工作以扩展其目前有限的适用性。在开发基于知识的机制设计方法时，已选择了两种解决方案策略供使用。第一个基于前向设计推理，第二个基于后向设计推理。两种方法都依赖于搜索潜在解决方案节点或“状态”的树或“空间”。前向设计推理的主要优点是它能够以系统且无偏见的方式枚举所有机制的结构，这些结构有可能满足预定的设计要求。这种方法的缺点是不能保证产生解决方案，并且可能需要较长的设计时间。后向设计推理的主要优点是，如果先前已将所需的解决方案状态引入系统，则可以保证解决机制设计问题的能力。为了充分利用该方法，需要开发具有描述机制能力的大型信息知识库。基于知识的机制设计方法可能会促进现有设计方法的发展，从而可以以系统的方式实现更具创意的设计。该博士论文为使用“智能”或基于知识的方法进行机理综合，分析和设计提供了一些见识。据信，本文所传达的概念和开发的原型软件将为下一代用于机构设计的CAD工具建立计算架构。

著录项

  • 作者

    Chieng, Wei-Hua.;

  • 作者单位

    Columbia University.;

  • 授予单位 Columbia University.;
  • 学科 Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 1989
  • 页码 182 p.
  • 总页数 182
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

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