설계관리 단계에서 해운대 관광리조트 개발사업의 CM업무 현황

윤승재,이영주,Yun, Seung-Jae,Lee, Yeong-Ju 한국건설관리학회 2012 건설관리 : 한국건설관리학회 학회지 Vol.13 No.4

최적연비성능과 배출가스 저감을 위한 동력관리 제어 연구

윤승재(Seungjae Yun),이경수(Kyongsu Yi) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5

Current research shows that it is possible to improve fuel economy and reduce emission compared with conventional vehicle by applying hybrid system to the vehicle. This paper describes a development of controller for a heavy duty series hybrid electric vehicle to improve the fuel economy and to reduce tailpipe emission. Vehicle model components are developed and integrated to design a controller. Model validation is performed by using the simulation results for representative driving modes. The power management controller proposed in this research is developed in order to obtain reduced fuel consumption, maintain the battery SOC(State of Charge) within proper operating region and reduce tailpipe emission. The ECMS(Equivalent fuel Consumption Minimization Strategy) is applied to develop controller.

시리즈 하이브리드 차량의 동력 제어 전략 연구

윤승재(Seungjae Yun),최재웅(Jaewoong Choi),이경수(Kyongsu Yi) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

This paper describes power management control strategy for series hybrid electric vehicle(SHEV). To evaluate improvement of fuel economy due to hybridization of conventional vehicle, series hybrid electric vehicle model which consists of electric driving motor, generator and battery are added to conventional vehicle model is developed. Model validation is conducted to improve accuracy by using experiment data. Considering required power and state of charge(SOC), controller determines amount of power produced by engine-generator then decides optimal operating point. Performance of designed controller is verified via comparison of fuel consumption when vehicles travel representative driving cycle.

최적 연비 성능을 위한 시리즈 하이브리드 차량의 통합 제어기 개발

윤승재(Seung Jae Yun),최재웅(Jae Woong Choi),이경수(Kyong Su Yi) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5

본 논문에서는 시리즈 하이브리드 차량의 동력 제어기와 주행 제어기를 연구하였다. 기존차량대비 연료저감효과를 평가하기 위하여 시리즈 하이브리드 차량 모델을 개발하였다. 주행제어기는 구동모터 제어기와 회생제동 제어기로 구성되어있으며 구동모터 제어기는 운전자의 페달 조작량으로부터 차량의 요구토크를 계산, 구동모터를 제어하고 회생제동 제어기는 회생제동량을 최대화하기 위하여 제동토크를 각 바퀴에 분배한다. 동력관리 제어기는 운전점 제어기와 엔진출력 제어기로 이루어져 있으며 최적 운전점과 엔진출력은 최적해로부터 얻은 규칙기반 제어기에서 결정된다 제안된 제어기의 성능은 대표 주행 모드를 주행할 때의 연료 효율과 종방향 성능의 시뮬레이션 결과를 이용하여 검증하였다. This paper presents power management controller and driving controller for a series hybrid electric vehicle. To evaluate reduction of fuel consumption compared with conventional vehicle, series hybrid electric vehicle model is developed. Driving controller contains driving motor controller and regenerative braking controller, driving motor controller calculates required power of driving motor by using pedal displacement of driver and regenerative braking controller distributes braking torque to maximize regeneration. Power management controller is composed of engine operating point controller and engine power controller. Operating point and power produced by engine is determined by rule-based controller which is based on optimal solution. Performance of proposed controller has been investigated via simulation of fuel economy and longitudinal performance for alternative representative driving modes.

마케팅 활동, 브랜드자산 및 고객자산 간의 관계 형성과 전략

윤승재(Yun, Seung-Jae),우정(Woo, Jeong),박흥수(Park, Heung-Soo) 대한경영학회 2006 大韓經營學會誌 Vol.19 No.1

직렬형 하이브리드 차량의 동력 관리 전략 비교 연구

윤승재(Seungjae Yun),이경수(Kyongsu Yi) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10

Current research shows that applying hybrid system to vehicle is expected to successful improvement in fuel consumption and emission compared with conventional vehicle. This paper focuses on modeling and control strategies of heavy duty series hybrid electric vehicle to improve the fuel economy of the system. Vehicle model is developed based on the MATLAB Simulink and model validation is carried out by using the simulation results for representative driving modes. The power management strategies for series hybrid electric vehicle are developed in order to obtain reduced fuel consumption and maintain the battery SOC(State of Charge) within reasonable operating region. The global optimal solution has been found by using dynamic programming method. The rule-based controller and the ECMS(Equivalent fuel Consumption Minimization Strategy) controller have been developed and applied to the series hybrid electric vehicle.

판매촉진 이용 구매 상황에서 현명한 소비자의 느낌(Smart Shopper Feelings)의 영향 연구

윤승재(Seung Jae Yun),이인구(In Ku Lee) 한국경영사학회 2008 經營史學 Vol.48 No.-

As the skilled new car salesperson will leave each customer with the feelings of having received a better deal than the most. The effect of sales promotion differs with the method of presenting to consumers. The main objective of this study is to find out the structural relationship among the efforts of consumer toward good buy, smart shopper feelings and consumer satisfaction when sales promotions are offered to consumer. Through the covariance structure analysis this study tried to find out how the effort toward a better purchase lead to consumer satisfaction. A structural model of consumers effort, smart shopper feelings and consumer satisfaction was setup. Also, the feelings of responsibility on the benefit of sales promotion, the scarcity of sales promotion and the cost savings were included in the structural model. To test the model, the 2×2×2 factorial designed field experiment was done. This study defines the perceived efforts of the consumer, the perceived scarcity of the promotion and the perceived cost savings as an independent variables. The consumer satisfaction, smart shopper feelings and the responsibility toward the benefit of the promotion was defined as dependent variables. Each subject of the study were given one of eight different notebook PC shopping scenarios. Each scenarios were designed(from pretesting) to elicit different level of the perceived efforts of the consumer, the perceived scarcity of the promotion and the perceived cost savings. As a result of LISREL analysis, the following result was found. The perceived efforts of the consumer has a positive and direct effect on the responsibility toward the benefit of the promotion and the perceived cost savings. The perceived scarcity of the promotion has a positive direct effect on the smart shopper feelings and the consumer satisfaction. The perceived cost savings has a positive direct effect on the consumer satisfaction. The responsibility toward the benefit of the promotion has a positive direct effect on the smart shopper feelings. The smart shopper feelings has a positive direct effect on the consumer satisfaction. The result of this study suggest that when the sales promotions are provided it is necessary to provoke the smart shopper feelings to induce more consumer satisfaction. The consumer satisfaction will eventually leads to the ultimate goal of sales promotion, the repeat purchase. To provoke the smart shopper feelings the marketer should consider the ways to make the consumers think the sales promotion is special in the planning process of sales promotion. Also, the sales promotions which need more effort of consumer could produce more smart shopper feelings. 본 연구는 소비자가 판매촉진을 통해 제품을 구입한 상황 하에서의 소비자의 구매를 위한 노력과 현명한 소비자의 느낌(Smart Shopper Feelings), 그리고 소비자의 만족이 가지고 있는 인과관계 구조를 공변량 구조분석을 통해 밝혀내어 판매촉진에 의한 구매시의 소비자 만족의 생성과정을 규명하여 소비자에게 보다 큰 만족을 줄 수 있는 판매촉진 유형의 개발에 대한 시사점을 제시하고자 하였으며, 검증결과를 요약정리하면 다음과 같다. 첫째, 소비자의 구매를 위한 노력과 만족의 사이에는 여러 변수들이 복합적으로 작용한다는 사실을 발견하였다. 소비자의 구매를 위한 노력은 소비자가 인지하는 비용절감에 정의 영향을 미쳤고, 이들 소비자가 인지하는 비용절감과 소비자가 인지하는 판매촉진의 희귀성은 만족에 정의 영향을 미치고 있음을 검증하였다. 둘째, 현명한 소비자의 느낌의 생성과정과 만족에 미치는 영향을 규명하였다. 소비자의 구매를 위한 노력은 소비자가 인지하는 판매촉진의 혜택에 대한 책임 귀인에 정의 영향을 미쳐 이는 현명한 소비자의 느낌에 정의 영향을 미치게 되고 현명한 소비자의 느낌은 만족에 긍정적인 영향을 준다는 것을 규명하였다. 한편 현명한 소비자의 느낌이 만족에 미치는 영향은 비용절감이나 판매촉진의 희귀성보다 큰 것으로 밝혀졌다. 이러한 본 연구의 결과는 판매촉진을 통해 소비자의 만족을 이끌어내기 위해서는 소비자들에게서 현명한 소비자의 느낌이 일어나도록 유도하는 것이 필요하며 현명한 소비자의 느낌을 일으키기 위해서는 정보탐색, 대안 평가 그리고 흥정 등의 소비자의 구매를 위한 노력을 유발시키고 판매촉진을 설계함에 있어서 판매촉진의 희귀성을 부각시킬 수 있게 설계하는 것이 필요하다는 것을 시사하고 있다.

하이브리드 휠로더의 동력전달계 구조 분석

윤승재(Seung Jae Yun),김학구(Hak Gu Kim),오광석(Kwang Seok Oh),이경수(Kyong Su Yi),서자호(Ja Ho Seo) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.4

에너지 효율 향상을 위한 6륜 인휠 모터 차량의 토크 분배 전략

윤승재(Seungjae Yun),이경수(Kyongsu Yi),정성용(Seongyong Joung),왕지현(Jihyun Wang),김종원(Jongwon Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12

This paper describes a motor torque control of six-wheel-driven electric vehicles for improved energy economy. In this research, this controller coordinates each driving motor torque to minimize total energy consumption under given required power condition. The controller consists of upper and lower level controller. The upper level controller determines required torque of the vehicle. The required torque is calculated by acceleration pedal input and vehicle velocity. The lower level controller determines energy consumption of motors in given condition and coordinates motor torque to minimize vehicle energy consumption. In coordinating optimal motor torque, motor efficiency is determined by motor speed and operating torque and maximum torque is a function of motor speed. Simulation studies are conducted to evaluate proposed motor torque controller and compare with conventional controller.

휠로더 시뮬레이션 모델의 개발과 검증

오광석(Kwang seok Oh),윤승재(Seung jae Yun),김학구(Hak gu Kim),고경은(Kyung eun Ko),이경수(Kyong su Yi) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.4