• Journal of Korea Foundry Society
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• v.17 no.6
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• pp.538-544
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• 1997

• Proceedings of the Korea Association of Information Systems Conference
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• 2003.05a
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• pp.45-54
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• 2003

Over the past decade, the unprecedented internet revolution has dramatically altered many core aspects of out daily business and personal lives. Many of these fundamental changes have completely transformed traditional communication mechanism, boosted productivity, opened up new marketing opportunities, and given birth to entirely new applications in the world of eCommerce and eBusiness. But Many web applications doesn't connect with real-world device such as lights, pumps, and Motors avaiable over the Internet. In this paper We introduce XML and presents way it can be used with I/O system.

• International Journal of Contents
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• v.8 no.2
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• pp.75-81
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• 2012

This study explores the important causal relationship between the public (domestic) and trade (international) disputes of South Korea and China. To understand the relations between the domestic and international disputes, Putnam's study of the two-level game theory has been conducted in order to analyze the effect of complicated social and political frameworks on international trade disputes. Due to the social and political differences between South Korea and China, this study provides three findings based on negotiation, policy, and strategic approaches.

• Structural Engineering and Mechanics
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• v.32 no.3
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• pp.447-457
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• 2009

A general analytical method for computing the joint stiffness from the sectional properties of the members that form the joint is derived using Vlasov's thin-walled beam theory. The analytical model of box T-joint under out-of-plane loading is investigated and validated using shell finite element results and experimental data. The analytical model of the T-joint is implemented in a beam finite element model using a revolute joint element. The out-of-plane displacement computed using the beam-joint model is compared with the corresponding shell element model. The results show close correlation between the beam revolute joint model and shell element model.

• 제어로봇시스템학회:학술대회논문집
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• 1997.10a
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• pp.1605-1608
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• 1997

In this paper, a new onmidirectional robot with one spherical wheel is porposed. The peculiar structure of the proposed mobile robot makes it possible not only to move sideways but to be easy to implement. The wheel is derived by two stepping motors and equipped with 8-infrared sensors. To prove the validity of the proposed robot, the experiment of going through a way is performed.

• 제어로봇시스템학회:학술대회논문집
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• 1997.10a
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• pp.825-827
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• 1997

This paper presents a robot which is steered by vision system. The proposed robot system has an AM188ES CPU(5.3 MIPS) and 2DC motors with encoder and turns accurately at any speed and shows a movement like a human controlled car using a steering wheel. To the robot only steering angle value is sent without considering the speed. We present how to control this robot using our real time vision system.

• 제어로봇시스템학회:학술대회논문집
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• 1997.10a
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• pp.736-739
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• 1997

In recent years, there has been a renewed interest in the BLDC motor as a research subject. In this paper we inspect sources of the torque ripple, which is one of the elements causing performance depreciation of BLDC motors. Based on the inspected sources of the torque ripple, feedforward compensation methods are proposed to reduce the size of torque ripple. The effectiveness of the proposed methods is verified with experiments.

• Proceedings of the CALSEC Conference
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• 1997.11a
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• pp.427-441
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• 1997

ㆍEXPRESS에 의한 AP214 Schema 정의 ㆍEXPRESS에 의한 Entity 정의 ㆍEXPRESS에 의한 TYPE, FUNCTION, RULE의 정의 ㆍAIM 축소 정보 모델 (Subset) 구성 ㆍAIM 축소 정보 모델의 예 ㆍ축소 정보 모델에 근거한 소규모 PDM시스템 AP214 개요 정식 명칭 : Core Data for Automotive Design and Processes 파트 번호 : ISO 10303-214 제안시기 : 1992년 STEP 시애틀 회의 (독일에 의하여 제안) 대상 내용 : 자동차의 기획 단계로부터 스타일링, 설계, 실험, 공정 계획, 툴 설계 및 제작, 품질 검사에 이르는 수명 전 주기상에 발생되는 제품 관련 정보 현 상태 : CD(Committee Draft) DIS (Draft International Standard) 표결 진행중(중략)

• Proceedings of the KIEE Conference
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• 2006.10b
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• pp.131-135
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• 2006

In this paper, a new estimation algorithm for the rotor speed for SRM drives is described. The algorithm is implemented by the binary observer. The stability and robustness of the binary observer for the parameter variations of the SRM are Proved by variable structure control theory. Variable speed control of the SRM is accomplished by the estimated speed. Experiment results verify that the MRAS observer is able to estimate the speed.

• Proceedings of the KIEE Conference
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• 1996.07a
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• pp.28-30
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• 1996

In the paper the authors deal with inverter fed induction motors design criteria for having a wide constant power range. In particular, the flux weakening operation is the main feature considered. The design target concerns the possibility of having a wide flux weakening region avoiding or limiting, at the same time, to oversize the motor and the inverter.