• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.735-739
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• 2001

This paper describes a research work of developing computer-aided design of a product with bending and piercing for progressive working. An approach to the system for progressive working os based on the knowledge-based rules. Knowledge for the system is formulated from plasticity theorise, experimental results and the empirical knowledge of field experts. the system has been written in AutoLISP on the AutoCAD with a personal computer and is composed of three main modules, which are input and shape treatment, flat pattern layout and strip layout modules. Strip layout of the system is designed by using fuzzy set theory. Process planning is determinated by fuzzy value according to several rules. Strip layout drawing generated in strip layout module is presented in 3-D graphic forms, including bending sequences and piercing processes with punch profiles divided into for external area. Results obtained using the modules enable the manufacturer for progressive working of electric products to be more efficient in this field.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 춘계학술대회 논문집
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• pp.829-832
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• 2000

This paper describes a research work of developing a computer-aided design of product with bending and piercing for progressive working. An approach to the CAD system is based on the knowledge-based rules. Knowledge fur the CAD system is formulated from plasticity theories, experimental results and the empirical knowledge of field experts. The system has been written in AutoLISP on the AutoCAD with a personal computer and is composed of three main modules, which are input and shape treatment, flat pattern layout and strip layout module. Based on knowledge-based rules, the system is designed by considering several factors, such as radius and angle of bend, material and thickness of product, complexities of blank geometry and punch profile, bending sequence, and availability of press. Strip layout drawing automatically generated by piercing with punch profiles divided into for external area is simulated in 3-D graphic forms, including bending sequences for the product with piercing and bending. Results obtained using the modules enable the manufacturer of electronic products to be more efficient in this field.

• 한국정밀공학회지
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• 제16권6호
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• pp.123-132
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• 1999

This paper describes a research work of developing computer-aided design of lead frame, semiconductor, with blanking operation which is very precise for progressive working. Approach to the system is based on the knowledge-based rules. Knowledge for the system is formulated from pasticity theories, experimental results and the empirical knowledge of field experts. This system has been written in AutoLISP on the AutoCAD using a personal computer and in I-DEAS Drafting Programming Language on the I-DEAS Master Series Drafting with Workstation, HP9000/715(64). Transference of data between AutoCAD and I-DEAS Master Series Drafting is accomplished by DXF(drawing exchange format) and IGES(initial graphics exchange specification) methods. This system is composed of five modules, which are input and shape treatment, production feasibility check, strip-layout, data-conversion and die-layout modules. The process planning and Die design system is designed by considering several factors, such as complexities of blank geometry, punch profiles, and the availability of a press equipment and standard parts. This system provides its efficiecy for strip-layout, and die design for lead frame, semiconductor.

• 한국정밀공학회지
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• 제17권8호
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• pp.198-206
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• 2000

This paper describes a research work of developing automated progressive process planning system for working electric products. An approach to the CAD system in based on the knowledge-based rules. Knowledge for the CAD system is formulated from plasticity theories experimental results and the empirical knowledge of field experts. The system has been written in AutoLISP on the AutoCAD with a personal computer and is composed of three main modules which are input and shape treatment flat pattern layout and strip layout module. Based on knowledge-based rules the system is design by considering several factors such as radius and angle of bend material and thickness of product complexities of blank geometry and punch profile bending sequence and availability of press. Strip layout drawing automatically generated by piercing with punch profiles divided into for external area is simulated in 3-D graphic forms including bending sequences for the product with piercing and bending. Results obtained using the modules enable the manufacture of electronic products to be more efficient in this field.

• 한국정밀공학회지
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• 제16권11호
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• pp.174-182
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• 1999

This paper describes a research work of developing a computer-aided design of product with bending constraints and piercing for progressive working. an approach to the CAD system is based on the knowledge-based rules. Knowledge for the CAD system is formulated from plasticity theories, experimental results and the empirical knowledge of field experts. The system has been written AutoLISP on the AutoCAD with a personal computer and is composed of four main modules, which are input and shape treatment, flat pattern layout, production feasibility check, and strip-layout module. Based on knowledge-based rules, the system is designed by considering several factors, such as radius and angle of bend, material and thickness of product, complexities of blank geometry and punch profile, bending sequence, availability of press. Strip layout drawing generated by piercing with punch profiles divide into automatically for external area is shown into graphic forms, including bending sequences for the product with piercing and bending constraints. Results obtained using the modules enable the designer and manufacturer of piercing and bending dies to be more efficient in this field.

• 한국컴퓨터정보학회논문지
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• 제16권4호
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• pp.235-241
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• 2011

대다수 산업과 무역유통 기업은 물류 자원을 통합한다. 기업들은 제품 운송부분을 원가를 절약하기 위해서 전문적인 물류회사에 맡긴다. 여기서 전문적인 물류회사를 제 3자 물류라 한다. 컴퓨터와 인터넷의 발전에 따라 발주와 화주 그리고 제 3자 물류회사 간에 인터넷을 통해 연결된다. 여러 회사에서 사용하는 관리 프로그램이 각각 다르기 때문에 이질적인 데이터는 제 3자 물류정보시스템에 큰 문제가 되었다. 본 논문에서는 지식 공학 방법론을 이용하고, prot$\'{e}$g$\'{e}$를 개발도구로 이용하여 도메인 온톨로지를 구축하였다. 그리고 물류 온톨로지에 규칙 베이스를 만들어서 그들이 완전하게 개념간의 관계를 표현할 수 있다. 또한 물류 온톨로지와 룰 베이스의 기초에 제 3자 물류회사의 배송센터에 지능 정보시스템을 설계하고 정보 시스템의 작업 프로세스를 시각적으로 보여주도록 실례를 제시하였다.

• 한국정보과학회논문지:소프트웨어및응용
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• 제35권3호
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• pp.189-196
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• 2008

본 논문은 복잡한 실시간 환경에서 인간의 의사결정을 대체하는 자율적인 에이전트의 구축을 위하여 필수적인 지식베이스의 형성과정을 제안하며, 지식베이스의 형성과정에 대한 방법론을 실질적인 응용 도메인에서 검증한다. 한국형 헬기의 두뇌역할을 수행하는 생존체계장비가 실시간 전장 환경에서 여러 개의 센서로부터 수신하는 위협 데이타를 분석하고, 위협 데이타의 특성과 위협간의 상호 연관성을 컴파일 과정을 통하여 귀납적 모델로 정형화한다. 규범화된 상황-행동 규칙은 헬기가 복잡한 전장 환경에서 실시간 추론 시간을 줄이며, 자율적으로 위협에 대처할 수 있는 능력을 갖추도록 할 것이다. 제안한 방법론의 검증을 위하여 한국형 헬기의 위협을 실험적으로 분류하였으며, 컴파일 과정이 위협을 성공적으로 탐지할 수 있음을 보여주었다.

• 디지털콘텐츠학회 논문지
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• 제2권1호
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• pp.73-79
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• 2001

VOD 서비스를 제공하는 서버는 클라이언트에게 좋은 서비스를 제공하기 위하여 요청을 처리할 수 있는 여러 개의 부본서버를 이용한다. 또한 시공간적으로 다양한 환경으로부터 요청된 클라이언트의 요구를 가장 효과적으로 처리할 수 있는 서버를 선택하기 위한 다양한 서버 선택 알고리즘들이 제안되었다. 선택 알고리즘은 각 부본서버의 성능을 평가할 수 있는 척도에 의하여 클라이언트의 요청을 적절하게 분산시켜야 서버 부하의 균형이 이루어지고 서비스의 질이 향상된다. 이때 척도를 어떻게 결정하느냐 하는 것이 선택알고리즘의 성능을 결정짓는 중요한 요소이다. 본 논문에서는 서버의 성능에 따라 서비스 요청을 분산시킴으로써 QoS를 향상시키는 데 중점을 둔 에이전트 시스템을 제안하고자 한다. 이 시스템은 부본서버 성능 분석자, 지식베이스, PCI 알고리즘기반 오토마타로 구성하였다. 학습자들의 요청에 응답한 각각의 서버로부터 수집한 로그를 분석하고, 조사하여 지식베이스를 생성하고 이로부터 추출한 규칙에 의하여 서비스를 제공할 서버를 선택한다. 여러 개의 부본서버 중 사용자 요청에 대하여 가장 좋은 서비스를 제공할 것으로 기대되는 서버를 동적으로 선택한다.

• 한국정밀공학회지
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• 제19권2호
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• pp.177-186
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• 2002

This paper describes a research work on the development of computer-aided design system far the deep drawing & ironing of high pressure gas cylinder. An approach to the design system is based on the knowledge-based rules. Knowledge for the system is formulated from plasticity theories, handbook, experimental results and the empirical knowledge of field experts. This system has been written in AutoLISP on the AutoCAD Rl4.0 using personal computer. This system is composed of three modules which are input. process design and drawing.

• 한국정밀공학회지
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• 제14권5호
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• pp.22-33
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• 1997

This paper describes a research work of developing a computer-aided design of blanking and piercing for stator and rotor parts. Based on knowledge-based rules, the die design system, STRTDES2, is designed by considering several factors, such as complexities of blank geometry and punch profile, and availability of press equipment and standard parts. Therefore this system can carry out a die design for each process which is obtained from the result of an automated process planning system, STRTDES1 and generate part drawing and the assembly drawing of die set in graphic forms. Knowledges for die layout are extracted from plasticity theories, relevant references and empirical know-hows of experts in blanking industries.