• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 하계종합학술대회 논문집(5)
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• pp.27-30
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• 2000

In this paper, we propose a new approach to determination of environment forces acting on a rigid body. To estimate the output of disturbance observer due to internal torque, the disturbance observer output estimator using functional link neural network (FLANN) is designed. It is also shown by simulation results that the precise estimation of contact force is achieved for a 2-link SCARA robot performing position/force control.

• Journal of Mechanical Science and Technology
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• 제17권8호
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• pp.1133-1139
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• 2003

In this paper, a numerical algorithm for the kinematic analysis of a multi-link five-point suspension system is presented. The kinematic analysis is carried out in terms of the rectangular Cartesian coordinates of some defined points in the links and at the joints. Geometric constraints are introduced to fix the relative positions between the points belonging to the same rigid body. Position, velocity and acceleration analyses are carried out. The presented formulation in terms or this system of coordinates is simple and involves only elementary mathematics. The results of the kinematic analysis are presented and discussed.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2019년도 춘계종합학술대회
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• pp.339-340
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• 2019

The society seeks creative talents. Expressive activities are educational activities that stimulate imagination, realize such through body, and enable communication with the society. In such perspective, it is quite meaningful to investigate educational objective that expressive activity shall possess as class to cultivate creativity. Therefore, this study aims to investigate creativity theory, analyze expressive activities as national curriculum at elementary schools, understand the position of expressive activities in Korea, and understand creative educational objective and value of expressive activities, in order to suggest idea for practical goal of expressive activities.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2022년도 제65차 동계학술대회논문집 30권1호
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• pp.71-72
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• 2022

이 연구는 3D 그래픽의 자동차 시뮬레이션 상황에서 네 바퀴가 독립적인 위치를 가지고 있을 때 차체의 위치와 방향을 계산하는 방식을 제안한다. 자동차의 기계 공학에 일반적으로 적용되는 Shock Absorber 등의 현가장치를 고려하지 않은 기반 모델이고, 향후 현가장치 등 네 바퀴 장치의 특성을 정교하게 구현하기 위한 출발점의 역할을 한다.

• 복식
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• 제56권7호
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• pp.152-166
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• 2006

The purpose of this study was to make patterns for lingerie look after examining expressive characteristics and constructive elements of lingerie look. As underwear became outerwear, position of wearing, materials, and details had changed, and the phenomenon to expose one's body has increased. The constructive elements found in the lingerie look were classified into silhouette, fastening, dart, and cutting line. Many of corset looks revealed cutting lines such as diagonal, perpendicular, and horizon. Brassiere look used perpendicular rutting lines or horizontal cutting lines passing through the bust point in order to highlight the volume by adding darts. There were styles Of chemise looks that used princess lines or separately added a brassier on the breast. Based on the examination of the elements, a total of four apparel works were created, including one flat pattern and three draping patterns. With new infra-apparel designs and patterns, this study was able to artificially highlight the body and express the beauty of costume through revelation of body. In addition, it explored the possibility that the phenomenon that underwear becomes outerwear may be a new idea of dress designing.

• 한국멀티미디어학회논문지
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• 제17권2호
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• pp.248-256
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• 2014

본 연구는 장시간 동일한 자세로 자리에 앉아 있거나 컴퓨터 작업을 오래함으로써 생긴 어깨 통증을 호소하는 이들, 몸의 움직임이 적어 신체적 이상이 온 이들을 대상으로 치료를 동반한 운동 목적의 기능성 게임 설계와 프로토타입 단계의 게임 개발이다. 선택된 음악의 비트에 맞추어 신체를 움직이는 리듬액션게임으로서, 플레이어가 도전하는 동안 불편을 가진 신체 부위의 기능 개선뿐만 아니라 환자의 색채 치료를 병행할 수도 있다. 게임 기획서에 따라 제작된 프로토타입 게임은 XNA Game Studio와 동작 인식이 가능한 키넥트 인터페이스 기술을 활용하여 개발하였다. 조작이 용이한 인터페이스 기술과의 접목, 음악의 빠르기와 공의 출현 속도로 난이도를 조절하며 신체 움직임에 따라 수준별 콘텐츠 제공을 시도해 보았다. 향후 연구는 신체 장애 정도에 따라 움직임을 조절할 수 있도록 다양한 비트의 음악과 플레이어의 다양한 행위를 추가하고, 일반 재활 효과와의 비교 검증 시스템과 현장 테스트가 요구된다.

• 한국정보통신학회논문지
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• 제13권2호
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• pp.330-340
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• 2009

함정은 해상 운용 시 파도 및 바람의 영향으로 인하여 Pitch Roll 방향으로 운동이 불가피하다. 따라서 함정은 전 후 좌우로 연속적으로 회전 운동을 한다. 그리고 함정은 내부 장비들의 가진에 의한 다양한 주파수의 진동과 강한 파도, 폭발에 의한 충격 등의 외란 신호에 항상 노출되어 있다. 본 논문에서는 실제 시스템과 유사한 전산해석 모델을 작성한 후 외란 신호를 포함한 함정의 연속적인 거동에 대하여 2축 안정화 장치 의 동적 거동 및 위치 제어 전산해석을 수행한다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.1166-1172
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• 2003

The extremely strong competition among the world automobile industries has introduced the concept of PLM in the total production activities, one of whose major components is VM(Virtual Manufacturing). If the production lines are equipped with robots, the application of OLP in the virtual space is fully mature. However, in the point of the investment's and the maintenance's view, there are always some activities, which can not be automated: for example, typically the manual welding for prefixing in the automobile body shop and the material loading. Process planning for these activities, therefore, are decided mainly by experiences, which caused many repeated rework of the processes and the inconvenience of the workers, and resulted consequently in the reduction of the productivity and the safety of the workers. In this paper, the optimal dimension of the welding gun and its handle position and the optimal working path is simulated and decided by use of DELIMN/IGRIP and DELMIA/Ergo and the working area modelized in the virtual workcell of DELMIA.

• 한국소음진동공학회논문집
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• 제23권3호
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• pp.234-239
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• 2013

There are many types of speed reducer for industrial uses. However the cycloid speed reducer is widely used in manipulators based on excellent performance of low backlash, high reduction ratio and compact size. It is essential to use precision speed reducer for accuracy of position controls on robot systems and electric vehicles. The cycloid speed reducer has a eccentric rotating motion and offset to avoid some problem of assembly, so it has a disadvantage for vibration. In this paper, a multi-body dynamic model is developed for a cycloid speed reducer and the dynamic behaviors of the reducer are investigated. The cycloid speed reducer consists of cycloidal plate gears, housing gear, input shaft, output pin and shaft, and eccentric bearings. Using a CAD program, each component of cycloid reducer is modeled based on the offset and eccentric. Multi-body simulations using Recurdyn and test using a rig tester are performed. As a result, the pin reaction force and the amplitude of housing displacement are increased by the larger offset and smaller eccentric value of cycloid reducer.

• 한국운동역학회지
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• 제30권3호
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• pp.235-245
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• 2020

Objective: The purpose of this study was to investigate the differences between visual search, eye fixation positions, and eye fixation position on whole body regions while judging final matches of dance sports. Method: Ten experienced judges (male 6, female 4) and six dance sports couples belonging to the top Korean leagues in the Korea Dance sports Federation were participated. Wearable eye trackers were used for data collection. The independent t-test was conducted to examine the effects of gender, and the two-way ANOVA was conducted to examine the effects of judges' gender, dance event, and ranking. Results: It was found that the movement of male contestants was preferred, and the gaze fixation was high for torso movements in the judges' evaluations. Moreover, attention was focused on the upper body rather than the lower body; this was maintained for about seven seconds to evaluate each couple. Conclusion: This find was the relative comparison between the two couples was the determining factor in winning or losing.