• 한국컴퓨터정보학회:학술대회논문집
• /
• 한국컴퓨터정보학회 2019년도 제60차 하계학술대회논문집 27권2호
• /
• pp.239-240
• /
• 2019

자동화 시스템이 발전하면서, 자동차 또한 자동화가 되고 점점 더 편리하게 발전해 왔다. 하지만, 아직까진 자동차 현황은 운전자의 운전능력에 의존하는 경향이 강하다. 본 논문에서는 이러한 사람의 운전능력에 의존해야 하는 자동차의 불편한 점을 해소하고자 개발했다. 기존의 자동차는 앞바퀴의 축이 선회하며 방향을 정한다. 그러나, 이러한 방식은 현재 운용되고 있는 기존 자동차의 기본적인 차체의 구조적인 문제로 인하여 자동차의 이동과 동선에 제약을 준다. 이 방식의 제약을 풀어버리기 위해서는 여러 방법이 있겠지만, 본 논문에서는 바퀴의 구동축이 움직이는 방식을 바꾸는 방법으로 자동차의 이동제약을 개선하고자 했다. 앞바퀴만의 방향 제어가 아닌 4개의 바퀴를 각각 제어할 수 있게 함으로써, 장애물을 피하기 위한 자동차 제어의 편의성을 더하고자 했다.

• 전력전자학회지
• /
• 제26권5호
• /
• pp.44-52
• /
• 2021

• 공학교육연구
• /
• 제9권3호
• /
• pp.67-77
• /
• 2006

우리나라 자동차 산업의 질적 고도화 요구에 발맞추어, 자동차공학 교육에서도 실험실습 기자재를 중심으로 보다 효율적인 교수-학습 방법이 도입 개선되어야 한다. 본 연구에서는 공학교육에서 유용한 교수-학습 방법을 고찰하였으며, 또한 기존의 기자재에 대한 활용상의 문제점 및 요구사항들을 분석하여 기자재를 중심으로 일체의 강의 자료들을 체계화한 이른바 총괄 교수-학습 시스템의 개념을 정의하여 제시하였다. 이를 기초로 자동차공학의 전기장치 분야에 대한 총괄 교수-학습 시스템을 개발하였고, 이를 효율적인 강의 및 실험실습의 수단으로서 강의 프로세스 상에서의 활용방안을 제안하였다.

• 한국감성과학회:학술대회논문집
• /
• 한국감성과학회 2001년도 추계학술대회 논문집
• /
• pp.182-189
• /
• 2001

감성공학을 적용한 자동차 개발 연구의 최근 동향은 감성공학을 부분적으로 편중적으로 적용하여 소비자의 감성을 수집하고 평가하여 자동차 개발에 필요한 데이터로 변환한 후 이를 설계에 적용하고 있는 추세로 자동차 설계에서의 구체적인 감성공학 적용 상세가이드라인에 대한 사용성 평가 사례가 매우 부족한 실정이다. 이에 본 연구에서는 감성공학 적용 자동차 Cockpit 설계를 위한 가이드라인 구축의 일환으로 동급 해외 차량과 국내 차량을 각각 1대씩을 선정하여 두 차량에서의 자동차 Cockpit 형상에 대한 비교, 분석을 통한 사용 편의성 평가 실험을 시행하였다. 그 결과 벤치마킹 대상 차량의 Cockpit 물리적 형상간의 서로 다른 감성 요소를 추출해 내어 감성공학 적용 자동차 설계 시 Cockpit Object의 위치 선정를 고려하여 설계할 수 있는 내부 일부 가이드라인을 제시할 수 있었다.

• 한국기계가공학회지
• /
• 제18권7호
• /
• pp.71-76
• /
• 2019

The diffusion of the drug component of the inflammatory patch into the living tissue was analyzed by laser induced plasma spectroscopy (LIBS). Calcium element, which is a diffusion catalyst of the drug in the inflammatory analgesic patch, is transferred into the body through the diffusion process of the substance. The test pieces used in the experiment are pig skin tissues which are similar to human skin. As a result, the diffusion coefficient D of the calcium element was found to be average $8.24{\times}10^{-2}({\mu}m^2/s)$. Experimental results showed that the most influential factors on the diffusion of materials were temperature variables.

• 한국분무공학회지
• /
• 제23권4호
• /
• pp.234-243
• /
• 2018

Since September 2017, a small diesel vehicle certification test mode has been enhanced from NEDC to WLTC. The main reason for the change of the certification test mode is that the certification test mode of the emission control standard of the diesel vehicle does not sufficiently reflect various driving patterns of the actual roads. Several automakers have developed after-treatment systems such as LNT, SCR, and DPF to meet enhanced emissions regulations. In this study, four small diesel cars were selected for sale in Korea, and the exhaust gas measurement test was performed in the WLTC mode, which reflects the driving characteristics of the actual roads. As a result of test, LNT vehicle exceeded Euro 6 NOx regulation and SCR vehicle satisfied Euro 6 NOx regulation. In addition, both LNT and SCR systems showed high NOX emission characteristics due to speed, RPA and Vxa. For the PN, all test vehicles were fitted with a DPF and met the Euro 6 PN regulations, with similar PN emissions results in LNT and SCR system.

• 한국분무공학회지
• /
• 제23권4호
• /
• pp.244-253
• /
• 2018

Recently, The ministry of Environment in korea have introduced Euro-6d temp which was strengthened at the same time as Europe. Small Light-duty passenger vehicles need the SCR system of after-treatment to meet enhanced emission regulations. However, SCR system has a low conversion efficiency in a low temperature less than 200 degree. In this study, the NOx conversion efficiency of SCR system was analyzed by installing a NOx sensors and a temperature sensors in a diesel vehicle. Also, in order to analyze the effect of the cold-start, the test was performed on the same RDE route and compared with the test of hot-start. As a result, SCR system has characteristics of low conversion efficiency under cold-start conditions.

• 한국분무공학회지
• /
• 제24권2호
• /
• pp.73-81
• /
• 2019

It is expected that the introduction of real-driving emission will strengthen the exhaust emission. However, various researches have been reported that real-driving emission has been influenced by factors such as characteristics of the test routes and driving characteristics for drivers. In order to reflect this effect, European Commission applied the concept of driving dynamics to prevent deliberately driving of excessive and acceleration over RDE test. The purpose of this study is to analyze the characteristics of exhaust emissions according to real-driving test in three test routes and driving style. As a result of the test, it was confirmed that when the same driver tested real-driving test under three test routes, it depends on the driving characteristics of the route. Also, RDE-NOx for driving style was that severe driving has been about 16 times higher than normal driving in KNUT route.

• 융복합기술연구소 논문집
• /
• 제13권1호
• /
• pp.1-6
• /
• 2023

Fast drying after squeezing has known as important for fabrics such as household towels and dishcloths due to the nature of their use. In this study, drying experiments with time were conducted on various fabrics made of materials widely used in homes using a simple experimental device. Similar to the results of previous experimental studies, it was found that in the case of fabrics of the same material with different weight (or thickness), the drying rate over time was similar. In the case of dimensionless weight and time, which are non-dimensionalized by initial weight and complete drying time, the drying characteristics of the fabrics tested in this study were found to have similar drying rates for each mode at both high and low speeds.

• 융복합기술연구소 논문집
• /
• 제13권1호
• /
• pp.19-22
• /
• 2023

The rise of electrification and the advancement of autonomous driving technologies are leading to new forms of mobility, such as serving and delivery robots. However, due to factors such as the small-scale production of various products and the high cost of autonomous driving sensors, product prices have risen, limiting accessibility to consumers. To improve this, we developed a multi-purpose mobility platform that is mass-producible, based on inexpensive, reliable sensors and a configurable human tracking system. As a result, the unit price is approximately 50% of the launch prices of other mobility products, and additional cost savings are possible through component optimization in the future. In addition, more added value will be created through the distribution of integrated mobility platforms that can be combined with various usable modules to meet a variety of user needs, such as cargo transportation, wheelchair power kits, and mobile monitors.