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박정남,박정훈,홍성훈,박상선,서강면,강문성 청주대학교 산업과학연구소 1997 産業科學硏究 Vol.15 No.2
This paper describes the implementation of a fuzzy temperature control system to control the water temperature in plant. This system consisted of mainly three parts; sensing part, control part that includes a control algorithm introduced the fuzzy theory, and actuating part. The control algorithms of control part are utilized a look-up table method and firmware technique using one-chip microprocessor(89C52). For evaluating the performance of a fuzzy control system, the experiment results of a fuzzy controller are compared with these of a conventional PID controller which provides an auto-tuning function. The experiment results show that the proposed controller has a good control performance and is robust to external disturbance.
유동층 화학증착법을 이용하여 증착한 열분해 탄소의 특성에 미치는 증착조건의 영향
박정남,김원주,박종훈,조문성,이채현,박지연,Park, Jeong-Nam,Kim, Weon-Ju,Park, Jong-Hoon,Cho, Moon-Sung,Lee, Chae-Hyun,Park, Ji-Yeon 한국재료학회 2008 한국재료학회지 Vol.18 No.8
The properties of pyrolytic carbon (PyC) deposited from $C_2H_2$ and a mixture of $C_2H_2/C_3H_6$ on $ZrO_2$ particles in a fluidized bed reactor were studied by adjusting the deposition temperature, reactant concentration, and the total gas flow rate. The effect of the deposition parameters on the properties of PyC was investigated by analyzing the microstructure and density change. The density could be varied from $1.0\;g/cm^3$ to $2.2\;g/cm^3$ by controlling the deposition parameters. The density decreased and the deposition rate increased as the deposition temperature and reactant concentration increased. The PyC density was largely dependent on the deposition rate irrespective of the type of the reactant gas used.
박정남,이종혁 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S2 No.1
With the development of modern communication and networking technology, more and more computing and communication facilities, automation equipments, home information appliances and difference type of networking terminals come into home all over the world. Household appliances and lots of machineries in house accordingly demand remote control for life convenience. In this paper, We suggested voice interface for home automation system. The voice interface consist of voice instruction management module and voice instruction insertion module. In the voice instruction insertion module, a user who use home automation system can edit any instruction directly. Using the voice instruction management module, the home automation system enables household appliances to control by voice instruction. Voice interface for home automation system facilitates not only to show TV, moving image, DVD, but also to replay music files. And what's more about the system is that it enables electrical appliances to control through TCP/IP or RS232C, being connected with the network.
平面 骨組 構造의 彈塑性 解析에 관한 考察 : S.A.Saafan의 式을 中心으로
朴正南 조선대학교 국토개발연구소 1981 국토개발연구 Vol.3 No.1
This paper is a study on the elastic-plastic analysis of the plane frame structure. In this paper, in case an initial deformation is supposed as a sine wave of half wave on the basis of saasfan's formula, the basic formula of transformation rules related to elastic end member and yield end member is derived. And in case of considering yield interrelation between bending and axial force, the elastic-plastic interpretation through the direct method for upper and lower bound procedures is studied by using the non-linear relation ship between the end action increment and the plastic deformation increment for yield section. The results of this study are as follows: 1. In lower bound procedures, low load-carrying capacity is given, and it is all right to have a small amount of movement load in lower bound procedures and a small increment load in upper bound procedures. 2. The in fluence by initial deflection of members appears as the initial stage of the failure process. 3. In case bending moments or axial forces are overwhelming, whether the yield interrelation between bending and axial force are considered or not, there is just a little difference. 4. In the case of considering finite displacement, low load-carrying capacity appears lower compaced with the opposite case.