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안병원,김현수,윤경국 木浦海洋大學校 1998 論文集 Vol.6 No.1
This study is on the development of a monitoring system which can be applied for not only large vessels but also small vessels less than 20 gross tonnage. The Monitoring system consists of many LMU(Local Monitoring Unit)s that collect data from local machinery, a host computer that controls LMU and a stable communication system. In this paper, the industrial computer is used as host computer and that is compotable to IBM PC. GUI(Graphic User Interface) for main program is constructed by the use of HANGUL library and BOLAND C??, so this software package is easy to access to beginners. The LMU is made up from 80C196KC, which consists of CPU, interface, digital input/output, analog input/output and communication. Communication system between the host computer and LMUs is the multidrop configuration using RS-485 method. One master device of industrial computer has the role of host computer and LMUs acts as slave devices. And, more efficient communication system is practicable by the aid of polling method as well as carrier sense multiple access with collision detection(CSMA/CD) protocol.
Kuk-Hyun Ahn,Jae-Bok Song 제어·로봇·시스템학회 2020 International Journal of Control, Automation, and Vol.18 No.9
In a cluttered environment in which objects are lying very closely to each other, the arranging motion is required before the robot attempts to grasp the target object. Thus, a robot must determine which motion to perform based on a given situation. This study presents an approach to learning a decision-making ability for the robot to grasp the target object after rearranging the surrounding objects obstructing the target object. The learning is performed in the virtual environment, and the image, which is an input of the deep Q-network, is preprocessed todirectly apply the results of the learning to the real environment. That is, the difference between the two environments is minimized by making the states obtained from the virtual and real environments similar to each other. In addition, image preprocessing can be used to generalize the results of learning so that the robot can determine the appropriate actions to take when objects that were not used for learning are given. A hierarchical structure, which consists of high-level and low-level motion selectors, is used for the learning: the former determines the grasping or pushing actions while the latter determines how to perform such selected actions. The results of various experiments show that the proposed scheme is effective in grasping the target object in a cluttered environment without the need for any additional learning in the real world.
Analysis of a Clutch Damper Using a Discrete Model
Ahn, Kuk-Hyun,Lee, Jang-Moo,Lim, Won-Sik,Park, Yeong-Il The Korean Society of Mechanical Engineers 2004 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.18 No.11
It is important to have a precise model for the clutch damper in order to simulate the entire powertrain of a vehicle and predict the responses of the system. In this research, we developed a new model in which the spring used in the clutch damper is divided into a finite number of elements. The model takes many unique properties of arc-shaped springs into consideration and is anticipated to be more precise than conventional simple models. With the model, two meaningful results were presented which can be utilized afterwards. One is a simulation concerning the peak torque transmitted via the clutch damper. The other is a simulation that shows the hysteretic characteristics of the clutch damper.
동력 분기 하이브리드 전기 자동차의 운행 모드 시뮬레이션
안국현(Ahn, Kuk-Hyun),조성태(Cho, Sung-Tae),임원식(Lim, Won-Sik),박영일(Park, Yeong-Il),이장무(Lee, Jang-Moo) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.06
The power split hybrid power train is considered to be one of the most prospective configuration for the hybrid electric vehicle (HEV). Toyota Prius, representing this type of vehicle, showed outstanding performances in fuel efficiency, emission reduction and acceleration. The excellence is largely due to the fact that it utilizes almost all operation modes of HEV. Those modes include ZEV (Zero Emission Vehicle) driving, idle stop, fuel cut-off, power assist, active charging, regenerative braking and so forth. In this paper, a few of the mode operations were simulated using AVL Cruise. Also, control logics to operate the powertrain in each mode were developed. The states of powertrain components were displayed and analyzed. By controlling the three components (engine, motor and generator), it was possible to run the powertrain in several hybrid operation modes.
동력 분기 하이브리드 전기 자동차의 운행 모드 시뮬레이션
안국현(Ahn, Kuk-Hyun),조성태(Cho, Sung-Tae),임원식(Lim, Won-Sik),박영일(Park, Yeong-Il),이장무(Lee, Jang-Moo) 한국신재생에너지학회 2006 신재생에너지 Vol.2 No.2
The power split hybrid powertrain is considered to be one of the most prospective configuration for the hybrid electric vehicle (HEV). Toyota Prius, representing this type of vehicle, showed outstanding performances in fuel efficiency, emission reduction and acceleration. The excellence is largely due to the fact that it utilizes almost all operation modes of HEV. Those modes include ZEV (Zero Emission Vehicle) driving, idle stop, fuel cut-off, power assist, active charging, regenerative braking and so forth. In this paper, a few of the mode operations were simulated using AVL Cruise. Also, control logics to operate the powertrain in each mode were developed. The states of powertrain components were displayed and analyzed. By controlling the three components (engine, motor and generator), it was possible to run the powertrain in several hybrid operation modes.