• 한국CDE학회지
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• 제4권2호
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• pp.36-41
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• 1998

To survive in the intensive world wide automotive market, more and more automotive companies are investing their resources into concurrent engineering systems (CE) based on the combined CAD/CAM/CAE/ PDM technology. The main objectives of CE in automotive companies are the quality improvement of products and the reduction of cost and time to market. Remarkable effects are appearing from some of these companies. As shown in this paper, these successful automotive companies have been focusing on establishing the new process and methodology in applying CE into their car development process.

• 한국자동차공학회논문집
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• 제1권3호
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• pp.83-94
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• 1993

Design and production of wiring for automobile systems provide the background for the development of concurrent engineering framwork. Key issues include with different parts of the wiring design process and the development of hierarchical representations that capture the different characteristics(e.g., connectivity, geometry) of the harnesses. The abstraction of design information results in features, while the abstraction of operations leads to the development of agents. These abstracts are essential for efficient transactions among people and computer tools in a domain that involves numerous interacting constraints. We have decomposed the wiring design process into four basic categories of tasks that are each addressed by an "agent" : the Environment Editor(EE), the Free Space Manager(FSM), the Wiring Editor(WE), and the Part Selector(PS). In this paper the strategy for the problem decomposition, the definition of features, and the ways in which features are used by various agents, are discussed. We conclude with a discussion of some of the issues raised by the project and the steps underway to address them.

• 한국CDE학회논문집
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• 제2권2호
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• pp.93-102
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• 1997

Most design changes are due to interferences and fit-up as parts are assembled if such a large product as an automobile or an aircraft is developed by many concurrent engineers. In this part (1) of the thesis, the assembly-centric modeling methodology with CAD systems is proposed in order to reduce the design changes. Unlike part-centric modeling method, a part is modeled with its own coordinate system which is used in downstream process as machining and measuring. The part coordinates initially have the same orientation as its assembly which is predefined in BOM (Bill of Material). Then, the corrdinates origin of the part is moved to its location to be assembled from that of its assembly coordinate system. To implement this methodology, the position data of the part w.r.t. its assembly are stored in a database to build the same hierarchical assembling structure as BOM structure. This modeling approach has the advantage of reflecting asembling sequence, because the process of positioning parts is similar to that of real assembling. And with the method, a designer can easily adjust all of the part positions of an assembly to resolve interferences if he modifies just the coordinates origin of the assembly, which results in moving included parts and assemblies together.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2005년도 춘계 학술발표대회 논문집
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• pp.20-21
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• 2005

• 한국정밀공학회지
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• 제12권10호
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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.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 1999년도 춘계 학술발표대회 논문집
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• pp.64-65
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• 1999

오늘날의 가혹한 제품개발 환경은 보다 경쟁력 있는 제품개발 프로세스를 요구하고 있다. 궁극적으로는 제품개발기간(PDT)을 단축하는 것이 주요과제인 이 새로운 제품개발방식은 컴퓨터상에 가상공간을 만들어 제품의 기획, 설계, 제조를 통합하는 기술로 지칭되고 있다.(중략)

• 경영과학
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• 제16권2호
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• pp.13-32
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• 1999

Concurrent Engineering is one of the information-based product development approach. Yet, the method of organizing the project team for the concurrent engineering is not clear. This study focuses on deriving a method to organize an information-based project team. The model consists of 4 layers : IT infrastructure, organization of the information-based project team, operation of the project team, an organization culture. Based on an analysis of new product development case, this study attempts to verify the model and to suggest more effective way of organization design and management for new product development.

• 전기학회논문지
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• 제56권4호
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• pp.761-767
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• 2007

In this paper, we deal wih a concurrent dual band low noise amplifier for a Radio Frequency Identification(RFID) reader operating at 912MHz and 2.45GHz. The design of the low noise amplifier is based on the TSMC $0.18{\mu}m$ CMOS technology. The chip size is $1.8mm\times1.8mm$. To improve the noise figure of the circuit, SMD components and a bonding wire inductor are applied to input matching. Simulation results show that the 521 parameter is 11.41dB and 9.98dB at 912MHz and 2.45GHz, respectively The noise figure is also determined to 1.25dB and 3.08dB at the same frequencies with a power consumption of 8.95mW.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2004년도 춘계 학술발표대회 논문집
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• pp.340-341
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• 2004

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.632-635
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• 2008

최근 들어 공장자동화분야에 동시공학이라는 개념이 활용되고 있다. 본 논문에서는 판재를 절단하여 철의장 부품을 생산하는 작업 현장이 회사 내 외의 협업이 요구되는 환경임에도 불구하고, 분산화 된 동시공학적 생산개념이 적용된 사례가 없어 이와 관련된 연구를 수행하였다. 클라이언트/서버 환경의 철의장 부재생산 자동화시스템을 설계하고, 부재 절단에 필요한 NC포스트프로세서 구축기를 설계하였다. 또한 부재생산 전 공정을 동시공학적 분산처리를 수행했을 때 기존의 생산공정에 비해 제품생산에 소요되는 시간이 단축됨을 보였다.