• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2010년도 춘계학술대회 논문집
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• pp.473-474
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• 2010

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2010년도 춘계학술대회 논문집
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• pp.332-333
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• 2010

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2010년도 춘계학술대회 논문집
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• pp.117-118
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• 2010

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 춘계학술대회논문집
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• pp.452-452
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• 2006

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2013년도 추계학술대회 논문집
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• pp.292-293
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• 2013

• 한국산업정보학회논문지
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• 제9권3호
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• pp.71-79
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• 2004

자동차의 급격한 증가로 인하여 교통 정체현상이 날로 심해짐에 따라 운전자에게 보다 안전하고 쾌적한 운전 편의성을 제공하기 위한 방법으로 차량항법장치(CNS)가 제안되었으며, 최근에 출시되는 많은 차량에 카 네비게이션 시스템이 장착되고 있다. 또한 네비게이션 시스템이 단순한 차량 항법 장치로서의 위치를 넘어 차량 내 멀티미디어 시스템으로서의 기능을 감당하고 있으며, 이에 따라 자동차 내장(Interior)의 중요한 부품으로 인식되고 있다. 따라서 기능뿐만 아니라 사용성과 외형적 디자인 역시 소비자의 취향에 맞게 설계되어질 필요성이 있다. 본 연구에서는 자동차 내장 부품의 구성 요소로서의 카 네비게이션 시스템에 대하여 소비자들이 요구하는 감성요소가 무엇인지 파악해 보았다. 특히, 소비자들이 선호하는 차종에 따라 내장 부품의 감성 특성 역시 변화될 수 있으므로 차량 선호도에 기초하여 감성요소 분석을 실시하였으며, 소비자 특성별 감성 선호도 도출 기법으로서 다차원 척도법(MDS)기법의 효용성을 입증해보았다. 정통적인 세단 형태의 차종을 선호하는 사람의 경우, 네비게이션 시스템에 대하여 고급감, 조화감, 재질감을 요구하였으며, 스포츠카를 선호하는 사람의 경우는, 팬시감, 개성감, 역동감을, SUV와 MPV를 선호하는 사람의 경우는 견고감과 역동감, 편의감을 중요시하는 것으로 분석되었다.

• 한국소음진동공학회논문집
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• 제16권6호
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• pp.582-592
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• 2006

This paper presents experimental and analytic methods to reduce interior noise generated by car axle. The test vehicle has a whine noise problem at passenger seats. In order to identify transfer path of interior axle noise, the vibration path analysis, the modal analysis and running modal analysis are systematically employed. By using these various methods, it has been founded that the interior noise generated by car axle was air borne noise. To reduce and predict axle noise, various structural modifications are performed by using FEM and BEM techniques, respectively. Through the modification of the axle structure, the air borne noise of the axle was reduced 3$\sim$4 dBA level.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1776-1781
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• 2008

To reduce interior noise of running vehicles, a floating floor construction has been widely used in recent railway industry. Among the key factors of the floating floor design, dynamic stiffness is of most important in acoustical point of view. Sometimes hard rubber type supports have often been selected due to the other design constraints such as heavy load condition, durability of rubber element and its cost etc., even though it seems like the softer support, the better isolation of noise and vibration. In this paper two representative floor supports have been considered to evaluate their effectiveness in interior noise contribution: one is a soft rubber and another is a relatively hard one. From the measured dynamic stiffness of the specimens, equivalent stiffness of actual floating floor has been derived to use in the analytical models. Calculated air-borne and structure-borne noise insulation properties of the floating floors have been compared with experiments in prototype car. In full car model interior noise levels of running vehicles have been predicted to quantify the effectiveness of the two different floating support materials and verified through the measured inside noise levels of actual train as well. By comparison with difference of running noise levels two materials for floor support can be investigated quantitatively so that it could be applied in floating floor design.

• 제어로봇시스템학회논문지
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• 제4권1호
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• pp.68-75
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• 1998

The Intelligent Cruise Control system, ICC, is a driver assisting system for controlling relative speed and distance between two vehicles in the same lane. The ICC may be considered as an extension of a traditional cruise control, not only keeping a fixed speed of the vehicle, but correcting the speed also to that of a slower one ahead. This paper presents a real-time self-tuning fuzzy control algorithm to develop ICC. The self-tuning fuzzy control law is adopted to reduce the effects of nonlinearities of the vehicle and various road environments. In the self-tuning algorithm an interior penalty method is applied to preserve the inherent order of membership functions and is modified as an on-line algorithm for real time application. Via simulations, the performance of the suggested control algorithm is compared with a PID and a fuzzy control without self-tuning. The suggested control algorithm is implemented on PRV III and the results of the test driving on a local road are given.

• 설비공학논문집
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• 제20권12호
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• pp.789-794
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• 2008

Recently, much attention has been paid in the field of defrosting because clear windshield in vehicle without effecting the thermal comfort is realized essentially. Then in winter, defrosting performance is one of the important factors in vehicle design to make certain driver's view. In this study, the velocity profile, temperature distribution and frost melting pattern on the windshield screen have been predicted in three dimensional geometry of an automobile interior. Numerical analyses predict a detailed description of fluid flow and temperature patterns on the inside windshield screen, utilizing the flow through defroster nozzle. Numerical prediction established a good defrosting performance with the standard distance ratio and the defroster nozzle angle ranging from $30^{\circ}$ to $40^{\circ}$, which satisfy the condition of National Highway Traffic Safety Administration (NHTSA) completely.