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Drive-By-Wire(DBW)를 이용한 전자스로틀 제어에 관한 연구 (Ⅰ)
심한섭(Hansub Sim),선우명호(Myoungho Sunwoo) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
Recent developments in automotive technologies have increased the importance of electronic control systems. Automotive electronic control technologies have improved the capabilities of several types of control systems and have been recognized as being very important in securing passenger safety and convenience.<br/> In this study, an electronic throttle control system has been developed by applying Drive-By-WIre(DBW) technology. In addition, various system -elements such as sensor, control devices, and actuator for hardware and a control algorithm for software has been discussed. The applicability of such elements to actual vehicles and its relationships with related technologies have been investigated experimentally.<br/>
비포장 노면 주행을 위한 스케이트보드의 조향제어기구 설계
심한섭(Hansub Sim) 한국생산제조학회 2005 한국생산제조학회지 Vol.14 No.3
Driving performance is affected by a steering mechanism and characteristics of the ground at off-road skateboarding. In order to drive on off-road, it is necessary off-road wheel and high performance steering mechanism to adapt on various configuration of the ground. In this paper, design factors are studied to affect to steering radius such as inclination angle of a king-bolt, distance of a wheel axle, and rolling angle of a deck plate. A steering system is adhered to inclination face of the deck plate. And, inclination angle is existed between the king-bolt and the flat face of the deck plate. Therefore, the wheel axle of the steering system can be steered by control of the rolling angle of the deck plate.
심한섭(Hansub Sim),이강윤(Kangyun Lee),선우명호(Myoungho Sungwoo),송창섭(Changeop Song) 한국자동차공학회 2001 한국 자동차공학회논문집 Vol.9 No.5
Highly accurate control of the air-fuel ratio is important to reduce exhaust gas emissions of the gaseous- fuel engines. In order to achieve this purpose, inlet air mass flow must be measured exactly, and precise engine models are necessary to design engine control systems.<br/> In this paper, the effects of water vapor and gaseous fuel that change the air mass flow are studied. The effective air mass ratio is defined as the air mass flow divided by the mixture mass flow, and also it is applied to the estimation of the inlet air mass flow, The presence of the gaseous fuel and the water vapor in the mixture reduces the air partial pressure and the effective air mass ratio of the gaseous-fuel engines. The Experimental results for an LPG engine show that the estimation of the inlet air mass flow based upon the effective air mass ratio is more accurate than that of the normal air mass flow.
액체 및 기체연료 엔진의 공연비 제어특서에 관한 비교 연구
심한섭(Hansub Sim),신규철(Kyuchul Shin),송창섭(Changseop Song),선우명호(Myoungho Sunwoo) 한국자동차공학회 2002 한국 자동차공학회논문집 Vol.10 No.1
In this study, the air-fuel ratio(A/F) control characteristics of a liquid and a gaseous fueled engine are investigated. Engine models for both the liquid and the gaseous fueled engine are developed to compare the characteristics of fuel delivery into the cylinder, and the performances of the models are evaluated using the simulation and experiment. The simulation and experimental results show that the gaseous fueled engine has better control performance than that of the liquid fueled engine in terms of the air-fuel ratio control. This study could be used to develop air-fuel ratio control schemes for both the liquid and the gaseous fueled engine.
기체연료엔진의 제어시스템 설계를 위한 엔진 모델링 및 검증
심한섭(Hansub Sim),선우명호(Myoungho Sunwoo) 한국자동차공학회 2003 한국 자동차공학회논문집 Vol.11 No.1
Highly accurate control of an air-fuel ratio is very important to reduce exhaust gas emissions of gaseous-fuel engines. In order to achieve this purpose, a precise engine model is required to estimate engine performance from the engine design process which is applied to the design of an engine controller. Engine dynamics are considered to develop a dynamic engine model of a gaseous-fuel engine. An effective air mass ratio is proposed to study variations of the engine dynamics according to the water vapor and the gaseous-fuel in the mixture. The dynamic engine model is validated with the LPG engine under steady and transient operating conditions. The experimental results in the LPG gaseous-fuel engine show that the estimation of the air flow and the air-fuel ratio based upon the effective air mass ratio is more accurate than that of a normal engine model.
심한섭(Hansub Sim),전종오(Jongoh Jun) 한국기계가공학회 2016 한국기계가공학회지 Vol.15 No.6
This paper presents a study of heat dissipation away from the fuel combustion of a marine diesel engine. These engines are operated for long periods under high load conditions: so cooling systems are necessary for radiation and control of the high temperature levels. In the study, each component of the water cooling system was developed to achieve improvements in cooling and safety. Heat transfer considerations and arrangement design for the components were important and an intercooler and exhaust manifold incorporated. An optimization of the cooling water’s flow path was achieved subject to the need for convenient maintenance. The 750Ps marine diesel engine was used for performance testing of the cooling system. The test results showed adequate cooling performance improvement.
심한섭(Hansub Sim),선우명호(Myoungho Sunwoo) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.9
Liquid Petroleum Gas(LPG) has been widely used for commercial light-duty vehicles worldwide. Since LPG has a higher octane number and a lower maximum combustion temperature than gasoline, it becomes more popular fuel for reducing exhaust emissions.<br/> In this study, mathematical models of air intake and fuel delivery system are presented, and a PI-controller is designed for air-fuel ratio control. Hardware and software of an engine control module(ECM) are designed for an LPG engine. The ECM is built using a Motorola MC68HC05. In order to control the air-fuel ratio at stoichiometry, the PI-control algorithm is implemented in the ECM.<br/> The experimental results show that the proto LPG ECM and its control scheme perform well to meet the stoichiometric air-fuel ratio requirement.
경전기자동차(LEV)에서 태양광전지의 응용에 관한 사례연구
심한섭(Hansub Sim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
A study for various security methods of the electric power is required because the charge capacity of the battery is insufficient and the electric loads are increased in the LEV(Light Electric Vehicle). The solar-photovoltatic cell was used in many fields as an electric generation system. In the case of the solar-photovoltatic cell being applied to charge auxiliary, the range/charge be increasing and the battery can be charged by the solar-photovoltatic charge system. From a case study of electric vehicles, several LEVs are used the solar-photovoltatic charge system on its roof.
A Study on an Electric Power System Design of a Small Electric Vehicle
Hansub Sim(심한섭) 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.1
The electric power system design of the electric vehicle are required to improve the performance. The electric power system on the electric vehicle are consist of a battery, a pedal sensor, an electric motor and a controller. In this paper, Automotive manufacture’s various electric vehicle models are investigated and analyzed. The mathematical models for the electric power system are studied, and then important variables are considered. Simulation and experimental test results show the model of the electric power system on the electric vehicle and design parameter decision are effective to the electric vehicle design.