• Journal of the Korean Institute of Telematics and Electronics B
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• v.29B no.11
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• pp.31-35
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• 1992

This paper presents a decentralized adaptive controller design for a robot manipulator to track the given desired trajectory in the joint space. The controller is of distributed structure and does not require the complex manipulator dynamic model, thereby it is computationally very efficient. Each joint is independently controlled by a PID feedback part and a velocity-acceleration feedforward part. Simulation results for a two-link direct drive manipulator conform that the proposed decentralized scheme is feasible.

• Proceedings of the IEEK Conference
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• 2003.07c
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• pp.2685-2688
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• 2003

A PC-based system for both monitoring and controlling SAUV is developed. The developed system is located on a ship and communicate with the SAUV through optical link through which the system sends motion command and receives video data, SSBL and Digital I/O data. The motion command includes velocity data and direction data. The overall system is developed with the intention of easy operation for operator and safe motion of SAUV. The easy operation is realized by GUI-based interface and the safe motion is realized by fault tolerant capability.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.1297-1300
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• 2005

In this study the gradient method is used to design a mixed $H_2/H_{\infty}$ controller. It is verified by an example that is BTT missile. We expect through the results of this study that gradient method can be easily applied to diverse optimization problems.

• Proceedings of the CALSEC Conference
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• 2000.08a
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• pp.25-34
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• 2000

빌 게이츠 (Business@The Speed of Thought : Using Digital Nervous System, 1999) ㆍ 정보기술의 발달로 다가올 10년은 지난 50년보다 훨씬 더 큰 변화를 겪게 될 것임. ㆍ 이는 준비된 기업에게는 무한한 기회이지만 준비되지 못한 기업에게는 위협임. ㆍ 1980년대는 질(Quality), 1990년대는 리엔지니어링(Reengineering)의 시대라면 2000년대는 속도(Velocity)의 시대임. "How you gather, manage, and use information will determine whether you win or lose."(중략)

• Proceedings of the IEEK Conference
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• 2000.09a
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• pp.967-970
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• 2000

본 논문에서는 기동하는 표적을 추적하기 위한 표적의 운동 모델링 방법에 대해서 다룬다. 실제 표적의 운동은 진행방향으로의 가속과 이와는 독립적인 방향 전환으로 이루어진다는 점에 착안하여 표적의 진행방향에 따라 동작 잡음의 분산 행렬이 변화하는 표적 중심 모델을 제안하고, 이를 IMMPDAF(Interacting Multiple Model Probabilistic Data Association Filter)에 적용하였다. 모의실험을 통해 기존의 모델을 사용한 IMMPDAF와 비교하였으며, 그 결과 기동 구간의 오차가 30% 정도 줄어들며 추적 실패율도 낮아짐을 볼 수 있었다.

• Journal of applied mathematics & informatics
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• v.29 no.5_6
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• pp.1205-1219
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• 2011

In this work, a stabilized characteristic finite volume method for the time-dependent Navier-Stokes equations is investigated based on the lowest equal-order finite element pair. The temporal differentiation and advection term are dealt with by characteristic scheme. Stability of the numerical solution is derived under some regularity assumptions. Optimal error estimates of the velocity and pressure are obtained by using the relationship between the finite volume and finite element methods.

• Journal of the Korean Institute of Telematics and Electronics D
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• v.35D no.8
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• pp.1-7
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• 1998

This paper reports a dispersion compensation technique to implement tje distortionless transmission line by satisfying the heaviside conditon. Because of the skin depth for aconductor, compensation condition is dependent on the freuqncy variation. For this reason, first, the resistance have been chaacterized in awide range of frequencies, and then found the effective conductivity of the substrate which satisfied the heaviside condition. The phase velocity and the characteristics impedance are prresented nearly constant over a wideband frequency range.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.598-601
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• 1995

This paper proposes a federated Kalman filter approach which utilizes information from multiple sensors and variable estimation model. Compared with the decentralized Kalman filter, the algorithm proposed in this paper demonstrates much better tracking performance in both maneuvering and constant velocity movement of the target.

• Journal of Biomedical Engineering Research
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• v.7 no.2
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• pp.151-158
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• 1986

In this paper, the design and implementation of a microcomputer-based measuring system for quantitative analysis of oculomotor system are described. An algorithm for microcomputer analysis of electro-oculographicaay recorded horizontal saccadic eye movements is presented. From a brief, 4-min recording session detailed statistical information about saccade amplitude, duration, and velocity can be obtained.

• Proceedings of the KIEE Conference
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• 1999.11c
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• pp.621-624
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• 1999

In this paper, we propose the non-contact method to measure rotational speed vector using spatial filtering method. The rotational speed $\omega$ is known by the frequency of output sinusoidal signal direct proportional to that and the rotational direction is given by the phase delay from the weighting function design of spatial filter.