• 전자공학회논문지CI
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• 제43권4호
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• pp.67-72
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• 2006

현대인의 생활에서 자동차는 이미필수적인 것이 되었고, 자동차 기술이 발달하게 됨에 따라 더욱 더 편리한 혜택을 누리고 있다. 그러나 자동차를 좀 더 편리하게 이용하고자 다른 부가적인 시스템들을 장착하게 되었고 대표적인 것이 네비게이션이다. 현재 네비게이션 시스템은 단지 일방적인 길안내만을 해주는 기계적인 시스템에서 크게 벗어나지 못하고 있다. 본 논문에서는 퍼지 로직을 이용하여 운전자의 성향을 판단하고 그에 맞는 경로를 안내해주는 지능형 네비게이션에 대하여 제안하고자 한다. 네비게이션의 가장 중요한 목적인 빠른 경로안내에 크게 벗어나지 않는 범위 내에서 사용자의 성향에 따른 경로 안내를 해주는 미래 지향적인 네비게이션 알고리즘을 제안하고 모의 주행을 통한 제안된 알고리즘을 검증한다.

• 한국소음진동공학회논문집
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• 제19권11호
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• pp.1158-1166
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• 2009

Future luxury car must satisfy the improvement of the luxury sound quality on the vehicle interior noise. Previously, we have analyzed vehicle interior noise by dB(A) based analysis. However, dB(A) has very little to do with the psychological satisfaction of the consumers. People want a sound that is characteristic and refined not a sound that is quiet and common. Subjective test were conducted to determine the relationship between subject' s responses and calculated metric values. People choose the most luxury sound among the various vehicle interior noise. And the purpose of this study is that we understand the metrics which constitute the luxury vehicle sound. We have analyzed vehicle interior noise by using the statistical analysis such as multiple regression method and correlation method. And we organized the index of the luxury sound quality.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2007년도 춘계학술대회 논문집
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• pp.246-249
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• 2007

It is very important that there are saving resource and energy in the future as well as in these day. Weight saving of structural parts, which are formed by extrusion, plays a key role in manufacturing field. Extruded aluminum parts' cross sections are constant in the axial direction by conventional extrusion method. Especially these aluminum parts used in the car need other processes to vary the cross section in the axial direction. Thus, applications of these parts are limited by high cost. if the cross section of the parts is variable by only extrusion, application of extruded aluminum parts will more increase. Therefore, a new CNC extruder which can control the section area of a car part was invented the nation's first. Using the extrusion machine, the experiment was performed to validate the workability.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 춘계학술대회논문집
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• pp.1621-1626
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• 2000

A simplified modeling approach for occupied car seats was demonstrated to be feasible. The model, consisting of interconnected masses, springs and dampers, was initially broken down into subsystems and experiments conducted to determine approximate values for model parameters. A short study of the effect of changing model parameters on natural frequencies, mode shapes and resonance locations in frequency response functions was given, highlighting the influence of particular model parameters on features in the mannequin's vibration response. Good agreement between experimental and simulation frequency response estimates was obtained. Future work should include optimization of parameter estimates, the inclusion of viscoelastic and nonlinear elements in addition to the linear springs and dampers, and finally extensions to a 3D model.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2007년도 추계학술대회 논문집
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• pp.128-131
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• 2007

It is very important that there are saving resource and energy in the future as well as in these day. Weight saving of structural parts, which are formed by extrusion, plays a key role in manufacturing field. Especially these aluminum parts used in the car need other processes to vary the cross section in the axial direction. Thus, applications of these parts are limited by high cost. if the cross section of the parts is variable by only extrusion, application of extruded aluminum parts will more increase. Therefore, a new CNC extruder which can control the section area of a car part was invented the nation's first. Using the extrusion machine, the experiment and FE analysis were performed during the varied section extrusion process.

• International Journal of Automotive Technology
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• 제6권3호
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• pp.243-249
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• 2005

To improve the ride comfort and handling characteristics of a vehicle, an active suspension which is controlled by external actuators can be used. An active suspension can control the vertical acceleration of a vehicle and the tire deflection to achieve the desired suspension goal. For this purpose, Model Predictive Control (MPC) scheme is applied with the assumption that the preview information of the oncoming road disturbance is available. The predictive control approach uses the output prediction to forecast the output over a time horizon and determines the future control over the horizon by minimizing the performance index. The developed method is applied to a half car model of four degrees-of-freedom and numerical simulations show that the MPC controller improves noticeably the ride qualities and handling performance of a vehicle.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(II)
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• pp.801-806
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• 2002

The operation of double deck train have increased in many countries such as Japan france, and the Netherlands as efficient, safe and convenient alternative transportation systems. Because of continuous concentration of population into Seoul metropolitan and serious traffic jam, the number of passengers using the commuter train have been increased rapidly. Considering these situations, we can find one of the solutions for heavy traffic problems through double deck trains. Stainless steel, and aluminum extruded panel are used to reduce the weight of double deck train. In this paper we compare the results of structural analysis of the double deck car body structures with Al extruded panels and stainless steel. We hope the results of this study may be used as basic guidelines in designing double deck trains in the future.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 춘계학술대회 논문집
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• pp.317-329
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• 2002

This report was studied about system design of tilting car for speed up for conventional railroad of KNR. The maximum operating speed of Kyun-Pu line was recorded a 140km/h by saemaul train at 1985 and the average speed its is 107km/h now. The chungang line, janghang line and honam line of KNR had rebuilt to the electrified line for operation of tilting train. This report was described about the operation status of advanced countries, the operation situation of trains of KNR, system design for operation and speed up by EMU tilting train on the conventional railroad in the future.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.238-243
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• 2002

The maintenance CALS system for car of urban transit is a part of standardization and development of urban transit system, and We have been performed the establishment of maintenance CALS system from 2001 to 2005. These 2D and 3D configuration management system are utilized in a variety of CALS system for user's convenience and safety in maintenance. In this paper, the 2D and 3D configuration system will be discussed for necessity and possibility. This system include RAMS(reliability, availability, maintainability and safety) of the vehicles shall be enhanced in the future.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2023년도 추계학술발표대회
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• pp.283-284
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• 2023

자율주행 경진대회에서 학생들의 장애물 후에 경로를 생성 능력을 검정하는 라바콘 추종 종목은 중요한 항목 중의 하나이다. 라바콘의 위치를 알기 위해서는 라이다 센서가 필요하다. 실내의 경우 저가의 2D 라이다 센서를 사용하여 콘의 위치 검출이 가능하지만, 실외의 경우에는 고가의 3D 라이다 센서 또는 고가의 3차원 카메라가 필요하다. 이러한 고가의 기자재는 실습의 대중화에 걸림돌이 되고 있으므로, 1개의 카메라와 인공지능을 이용한 라이다 콘의 검출하는 방법을 개발하였고, 이를 활용하여 경로 생성 및 제어를 수행하였다. 그 결과 0.4m 이내의 정밀도로 콘의 위치 추정과 주행을 성공적으로 수행하였다.