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

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On the Structure of a Knowledge-Based Mold Design System (지식 기반 사출 금형 설계시스템 구조)

  • Kang M.;Eum K.H.;Kim T.S.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.10a
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    • pp.119-123
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    • 2005
  • Mold design is a knowledge-intensive decision making process where product designer, injection molding engineer as well as mold designer affect each other. Representation and management of design knowledge is a prerequisite for an intelligent design system, which aims to guide and support designer to carry out design activity in more efficient way by avoiding or minimizing unnecessary trial and errors. This paper discusses the issues in knowledge-based mold design, and describes the structure of a knowledge-based mold design system fur parts with micro features under development.

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A development of an ontology model and an ontology based design system for the excavator design (굴삭기 설계 영역에 대한 온톨로지 모델 및 온톨로지 기반 설계 시스템 개발)

  • Bae I.J.;Lee S.H.;Jeon C.M.;Chang J.H.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.613-614
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    • 2006
  • Design data, information, and knowledge have complex associations with each other. Systems related with the management of the data, information, and knowledge are various, and the representations are numerous. Therefore it is difficult to construct a knowledge based design system with a full association knowledge for supporting the design tasks. In this research, OWL based ontology model for an excavator design is developed for the representation of the relationships. Also an ontology model is used to develop the knowledge based excavator design system.

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A Study on Web based Integration of Design Resources with a Knowledge Based Engineering Technique (KBE 기법이 적용된 설계 자원 웹 기반 통합에 관한 연구)

  • Kim J.G.;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.1-10
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    • 2005
  • This paper presents an embodiment of design integration framework corresponding to changes in the latest manufacturing environment. The embodied system is named by 'WEB-KBE System' because it supports a product design with a KBE technique based on web environment. The final purpose of the work is to implement a web-based integration design environment with a KBE technique to support non-skillful designers. The framework of the system Is designed to support necessary items in user-centric design environment. Two case studies were applied to the WEB-KBE system to evaluate the efficiency, flexibility, extensibility, and reusability of the system. The examples are [1] CART integration design environment construction and (2) Exhaust Duct Saddle Support integration design environment construction. In the former case, it took a period of 8 months for modeling and implementation of the WEB-KBE prototype system. However, with the high extensibility and reusability of WEB-KBE system, the second case required only a period of one month for modeling and implementation of the system. We conclude that the presented WEB-KBE system can bring fair effects on implementing a knowledge based design environment in aspect of time and expense.

An Application of a Knowledge-Based System for Design of Reinforced Concrete Deep Beam with Opening (개구부가 있는 춤이 큰 철근 콘크리트 보의 설계에서 지식기반시스템의 적용)

  • 민명희;이승창;이병해
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1996.04a
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    • pp.40-46
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    • 1996
  • Three procedures are currently used for the design of deep beams, which are Empirical design method, Nonlinear analysis, and Truss models. The engineering logic and decisions inherent in these design procedures are dependent on the acquired knowledge and experience of the structural engineer. Knowledge-based system is useful to solve problems which require human experties. Therefore, this study presents an application of Knowledge-Based System for design of reinforced concrete deep beams with web openings.

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Development of Rule-Based Knowledge Representation Supporting Tool for Design Digital Moister System (설계 디지털 마이스터 시스템 구축을 위한 규칙 기반 지식 표현 지원 도구 개발)

  • Nam S.H.;Kang H.W.;Lee W.;Suh H.W.;Choi H.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.633-634
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    • 2006
  • Recently we started a development of the digital meister expert system for the product design supporting in manufacturing industry. Knowledge representation is of major importance in digital moister expert system. This rule-based expert system-knowledges are designed for a certain type of knowledge representation such as rules or logic. The way in which a rule-based expert system represents knowledge affects the development, efficiency, speed, and maintenance. Eventually, this digital moister system is used to the engineer in manufacturing industry for the process control, production management and system management. In this paper, we propose the digital moister system knowledge representation method for product design supporting in manufacturing industry and we present introduction and contents of rule-based knowledge representation supporting tool.

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Intelligent Design System for Gate and Runner in Injection Molding (사출성형을 위한 게이트.런너 지적설계시스템에 관한 연구)

  • Lee, Chan-Woo;Huh, Yong-Jeong
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.9
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    • pp.192-203
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    • 2001
  • The design of gate and runner(delivery system) is one of the most important subject in injection molding. Delivery system is a channel to flow the polymer melt from the injection molding machine to the mold cavities. Also, delivery system affect quality and productivity of the part. The synthesis of delivery system of injection molding 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 the current CAD systems. GATEWAY is a knowledge module which contains knowledge to permit non-experts as well as mold design experts to generate the acceptable geometries of gate and runner far injection molded parts. A knowledge-based CAD system is constructed by adding the knowledge module, GATEWAY, to an existing geometric modeler. A knowledge-based CAD system is a new tool which enables the concurrent design and CIM with integrated and balanced design decisions at the initial design of injection molding.

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Lens Barrel Design Based on Distributed Knowledge-Base (분산 지식베이스에 기반한 렌츠 경통 설계)

  • 복기소;명세현;한순흥
    • Korean Journal of Computational Design and Engineering
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    • v.5 no.1
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    • pp.1-11
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    • 2000
  • The purpose of Computer Aided Design is to design good products as quickly as possible. To do this, it is important to reuse the old designs and build on them. Most engineering designers, therefore. hale studied methods for reusing old designs, and the results of their study hale been applied to new designs Unfortunately, this only involves reuse of geometric data without design knowledge. If they can design products with the geometric data, including design knowledge, of the old designed and share them through the Internet, design efficiency will be improved. In other words, one way to improve designer's productivity is to share design information that includes knowledge and scattered data across design offices. This paper introduces a shared design environment with distributed knowledge-base. A product design environment based on distributed knowledge-base is proposed, which integrates the CORBA, OLE and WWW as the network architecture, a 3D CAD system, and an expert system shell. A design example of the lens barrel of a projection television is implemented to verify the idea.

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A Knowledge-Based CAD System for the Synthesis of Supplementary Features in Injection Molded Parts (사출성형제품의 부형상 설계를 위한 지식형 CAD 시스템에 관한 연구)

  • 허용정;김상국
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.15 no.6
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    • pp.1933-1947
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    • 1991
  • The synthesis of supplementary features of injection molded parts has been done empirically, since it requires profound knowledge about the features' moldability and causal effects on the properties of the part, which are not available to designers through current CAD systems. RIBBER is a knowledge module which contains knowledge to permit non-experts as well as mold design experts to generate acceptable supplementary features of injection molded parts. A knowledge-based CAD system is constructed by adding the knowledge module, RIBBER, for mold feature synthesis and appropriate CAE programs for mold design analysis to an existing geometric modeler in order to provide designers, at the initial design stage, with comprehensive process knowledge-based CAD system is a new tool which enables the concurrent design and CIM with integrated and balanced design decisions at the initial design stage of injection molding.