• Title/Summary/Keyword: Knowledge-based Design System

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A Theoretical Study on the Knowledge-Based System for Design (디자인을 위한 지식기반시스템의 이론적 고찰)

  • 김태현
    • Korean Institute of Interior Design Journal
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    • no.7
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    • pp.70-78
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    • 1996
  • Artificial Intelligence is generally concerned with tasks whose execution appears to involve some intelligence if done by humans, and knowledge-based system ( in other word, expert system) is the research about the specific domain. This concept also can be applied to interior design field. So the purpose of this study is in reconstructing the accomplishment of artificial Intelligence and knowledge engineering, searching basic theories and cased to knowledge engineering , searching basic theories and cases to formulate knowledge -based design system, and testing the posibilities how the design information can be dealt in computer system. Given that recognition , two major problems must be solved before knowledge-based CAD systems could be come practical : Firstly , identification of the interior of designers use .Secondly , representing this knowledge in a computationally effective manner. I had discussed the basic concepts on which to base a knowledge- based design model, knowledge representation schemes, and problem solving, I could find the possibility which the knowledge-based system can be applied to the interior design according to this study. But there are non-deductive, often irrational and now easily computerized design process in interior design. Those are problems which are relevant to the machine learning and the creativity in design. So there should be a lot of research about the machine learning and the creatively in design in order to construct successfully intelligent knowledge-based design system.

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A Knowledge-based CAD System for product and Mold Design in Injection Molding (사출제품 및 금형의 통합적 설계지원을 위한 지식형 CAD 시스템)

  • Huh, Y.J.
    • Journal of the Korean Society for Precision Engineering
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    • v.12 no.10
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    • pp.32-39
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    • 1995
  • The design of injection molded polymeric parts has been done empirically, since it requires profound knowledge about the moldability and causal effects on the properties of the part, which are not available to designers through current CAD systems. An interactive computer-based design system is developed in order to realize the concept of rational design for the productivity and quality of mold making. The knowledge-based CAD system is constructed by adding the knowledge -base module for mold feature synthesis and appropriate CAE programs for mold design analysis in order to provide designers, at the initial design stage, with comprehensive process knowledge for feature synthesis, performance analysis and feature-based geometric modeling. A knowledge-based CAD system is a new tool which enables the concurrent design with integrated and balanced design decisions at the initial design stage of injection molding.

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A Hybrid Monitor (Rib, Boss) Design System with a Function Based Design and a Knowledge Based Design (기능기반설계와 지식기반 형상설계를 이용한 하이브리드 모니터 마스크(리브, 보스) 설계시스템)

  • Lee S.H.;Chun H.J.;Jeon S.M.
    • Korean Journal of Computational Design and Engineering
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    • v.11 no.2
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    • pp.77-87
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    • 2006
  • It is necessary to change the existing design process to cope with a short life-cycle product and various customer's demands. Also a frequent design change may delay the whole design process and it will increase the unit cost of the production. New alternatives or techniques have emerged to solve the existing design problems, such as a knowledge based engineering, an intelligent CAD, a function based design, and so on. In this paper, we propose a hybrid design system with a knowledge based design methodology and a function based design technique. The knowledge based design is good at a frequent design change and the function based design is effective to extract a core design behavior. In an early design process, the system utilizes a core design behavior through the function based design process. On the other hand, the system manages complicated design issues with the knowledge based design technique in the detailed design process. We conclude that the hybrid design system can bring fair effects on implementing an efficient design environment in aspect of time and expense.

Development of Knowledge Code Converter for Design Knowledge Management

  • Nomaguchi, Yutaka;Shimomura, Yoshiki
    • International Journal of CAD/CAM
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    • v.5 no.1
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    • pp.83-90
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    • 2005
  • This is a report on a new methodology to manage design knowledge by utilizing a knowledge-based CAD and a prototype system named $C^3$ (Cubic; CAD knowledge Code Capacitor), which is being developed using our methodology. $C^3$ facilitates (i) the automatic generation of a knowledge code for a knowledge-based CAD by processing design documents written in the format near the natural language, such as English or Japanese, and (ii) automatically generation of a design document written in the format near the natural language from the knowledge code. The features of the system facilitate document-based design knowledge management which reduces the designer's load to encode and maintain design knowledge, because it is easier for a designer to treat a natural language description than a coded description.

A Mold Base Design System based on a Knowledge Based Engineering System (지식 기반 공학 시스템을 이용한 사출 금형의 몰드베이스 설계)

  • 김석렬;임성락;이상헌
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2003.06a
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    • pp.1467-1470
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    • 2003
  • In order to enhance the productivity of design and manufacture of injection molds, various computer-aided systems have been developed and introduced to mold manufacturers. The customized 3-D CAD systems for mold design is one of the most representative computer-aided system. However, these systems usually do not provide a convenient way to access and manage design knowledge implemented in them. To overcome this shortage, knowedge-based engineering systems have been developed, and now they are imbedded as modules of commercial CAD systems. In this paper, we introduced a 3-D design system for standard mold base based on Knowledge Fusion, a commercialized KBE system imbedded in Unigraphics. By introducing KBE system, design knowledge can be exposed to the users and modified by the end-users.

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A Study on an Extended Knowledge Model and a Management System of an Intelligent CAD System using UG/KF (UG/KF를 이용한 지능형 CAD 시스템의 지식 확장 및 지식 관리에 관한 연구)

  • Bae I.J.;Lee S.H.;Chun H.J.
    • Korean Journal of Computational Design and Engineering
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    • v.10 no.1
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    • pp.49-60
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    • 2005
  • Existing CAD systems have configured geometry data and it is necessary to extend the configured geometry into a knowledge-based system. An intelligent CAD system emerged to provide such a knowledge-based system. However the intelligent CAD system has a limited product model to represent various knowledge models. This paper presents a model, called extended intelligent CAD model, which can extend the product model of the intelligent CAD system into further detailed knowledge model. The extended intelligent CAD model includes a whole design process knowledge and an efficiency of the model has been verified via a knowledge based wiper design system. The model can improve the functionality and efficiency of the existing CAD systems.

Application of Knowledge-Based System in the Design of Pre-cast Concrete Member (프리캐스트 콘크리트 부재설계에서 지식기반시스템의 적용)

  • 김성중;이승창;이병해
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1995.04a
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    • pp.176-183
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    • 1995
  • The design process of pre-cast concrete member needs various design parameters and the engineer's experiences. The introduction of knowledge-based system in the design of pre-cast concrete member enables us to design complicated members using the designer's heuristics. The objectives of this research are to study useful methodology for representing knowledge and data in the development of knowledge-based system and to show the application of methodology by developing a prototype sysytem for design of pre-cast concrete member. This paper nrst describes methodology for building knowledge-based system. It then presents knowledge-based system for pre-cast concerete member design.

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Knowledge-based Expert System for the Preliminary Ship Structural Design (선체 구조설계를 위한 지식 베이스 전문가 시스템)

  • Y.S. Yang;Y.S. Yeon
    • Journal of the Society of Naval Architects of Korea
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    • v.29 no.1
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    • pp.1-13
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    • 1992
  • The objective of this study is to develop knowledge-based system for the preliminary design and midship section design of bulk carrier and to enhance the applicability of knowledge engineering in the field of Naval Architecture. First, expert system shell called E.1 is developed in C language. E.1 supports backward-chaining, automatic iteration procedure and reiterative inference mechanism for efficient application of knowledge-based system in structural design. Knowledge representation in E.1 includes IF-THEN rules, 'facts'and 'tables'. Second, knowledge bases for the principal particulars and midship section design are developed by experimental formula, design standard and experiential knowlege. Third, hybrid system combined this knowledge-based system with the optimization program of midship section is developed. Finally, the simplified design method utilizing the regression analysis of the optimum results of stiffened plate is developed for facilitating the design process. Using this knowledge-based system, the design process and results for Bulk carrier and stiffened plates are discussed. It is concluded that knowledge-based system is efficient for preliminary design and midship section design of the ship. It is expected that the performance of the CAD system would be enhanced if the better knowledge-base is accumulated in the E.1 tool.

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Preliminary Design of a Ship by the Knowledge-Based Optimum Design System (지식기반 최적설계시스템에 의한 선박 초기설계)

  • Dong-Kon Lee;Soo-Young Kim
    • Journal of the Society of Naval Architects of Korea
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    • v.33 no.1
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    • pp.161-172
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    • 1996
  • Although conventional computer programs use efficient and precise optimization algorithms, they can not emulate the problem solving capabilities of human experts. A design optimization process involves a number of tasks which require human expertise and experience. Traditional optimization systems have concentrated on numerical aspects of a design process and have not been successful in integrating the numerical parts with human expertise. On the other hand, most knowledge-based systems focus on symbolic reasoning and have been little concerned with the numerical processes. The objective of this paper is to develop a knowledge-based multiobjective optimum design system which has the capabilities of knowledge processing and numerical computation by integrating the multiobjective optimization method and the knowledge-based system. The knowledge-based system for symbolic processing is developed. Rules for knowledge representation and the inference mechanism of the system are written in LISP. The knowledge-based multiobjective optimum design system is finally developed by integrating the multiobjective optimization method and the knowledge-based system by applying shell programming technique. The system is applied to an optimum design model of a LNG carrier in the preliminary design stage. It is found that the system well simulate design variables and objective functions of the design model.

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Development of Ontology-based Intelligent Mold Design System (온톨로지 기반 지능형 금형 설계 시스템의 개발)

  • Lee, Sang-Hun;Kang, Mu-Jin;Eum, Kwang-Ho
    • Korean Journal of Computational Design and Engineering
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    • v.16 no.3
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    • pp.167-177
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    • 2011
  • This paper describes an ontology-based intelligent CAD system for injection mold design, which has been developed based on a commercial CAD system called Unigraphics and an ontological framework for representing the implicit design knowledge as well as the explicit based on the extended function-behavior-structure (FBS) engineering design model that includes the constraint. The system also provides various convenient solid modeling capabilities for mold design and the design process modeling capability that facilitates mold redesign process.