Neue Algorithmen Zur Zeitoptimalen Regelung Zeitdiskreter Iinearer systeme : 김명호

김명호 Univ. Dortmund 1993 해외박사

최단시간제어 사용의 문제점으로 긴 계산시간, 큰 메모리 용량, 외부잡음또는 모델오차에 따른 과민반응 그리고 비교적 좋지 않은 과도응답등을 들 수있다. 이 논문에서는 어떻게 전체적인 과돔별�동작점에서의 반응이 개선될 수 있나를 보이고 있다. 이를 위하여 계는 우선 동작점을 중심한 작은영역으로 최단시간 방법으로 제어되고 이어서 이 영역안에서는 외란의 영향을 덜받는 한 어가 사용된다. 이때 선형제어의 설계 및 중심영역의 산정에 계의출력식이 사용되며 이는 최단시또한 출력식을 사용하는 결과가 된다. 중심영역 밖에 적용되는 최단시간제어에는 최적예비(Reservmal)방법을추가로 사용하여 그 결과 측정 및 모델오차의 영향을 덜 받게되며 중심영역과의경계에날 수 있는 진동도 줄이게 된다. 이 이외에도 입력변수값의 급격한변화를 줄일 수 있는 (Subopti법을 제시하였으며, 새로 개발된 이러한알고리즘으로 상당히 개선된 최단시간 제어를 실현시킬 � 계산시간을줄이기위하여 필요한 입력벡터들의 최소길이를 산정하는 방법도 제시하였다.

바닥분출 공조공간 내에서의 환기효율에 관한 실험적 연구

김명호 국민대학교 1998 국내석사

都心 住居環境 特性에 관한 硏究 : 住商複合을 中心으로

金明浩 조선대학교 2003 국내석사

The first condition of recovering the urban functions is recovery of residential functions and this study examines the residential environment structure of the urban area and investigates and analyzes the satisfaction of urban residential environment, neighboring sense and types of preferred houses by the residents in urban apartment houses in order to make it a basic material for recovering urban residential functions. The results of.this study are as follows; Total buildings of survey region are 59 and among them, seven are for residence, two are complex of residence and commerce, three are that of neighboring residence and commerce and two are detached houses. Occupation of land area by the complex of residence and commerce is 67% and urban residence is mostly the complex of residence and commerce. Age of residents in the complex of residence and commerce is mainly over forties, location of workplace is mostly in downtown area or neighboring area to it and the length of residence is over 10 years. Satisfaction with urban residence is higher in transportation, shop, hospital facilities, public facilities, cultural facilities, apartment management, housing size and neighborhood relationship, but it is low in children education, air pollution, noise, green zone, resting place, sunshine, view and privacy. Residential factors in urban apartment houses include convenience in downtown location, distance to workplace, traffic convenience and easy use of cultural and commercial facilities. The reasons for refusing to live in downtown area include noise, air pollution and lack of park and green zone. So for the recovery of urban residential functions, consideration for residential environment of high quality is needed. Accordingly, for the increase of downtown residential functions, development of downtown houses of new types with the mixed functions of green and resting place and research for implementing it are required.

농민의 거래선의 추이에 관한 조사연구

金明皓 전남대학교 1977 국내석사

가솔린 엔진의 냉간 시동시 THC 저감용 포집백 제어시스템에 관한 연구

金明鎬 조선대학교 2003 국내석사

It is well known that unburned hydrocarbons are abundantly emitted into the atmosphere at cold start in Garsoline engine. Many nations tend to enforce regulations of emission much more strictly. This study was conducted to develop a system which reduces HC emission at cold start using the device of temporary storage and recombustion. The measurements are focused upon the first 30 seconds of operation after starting, with the engine and coolant initially at ambient temperature because this period has a major effect on HC emissions, over the FTP cycle. VATS attached on the O₂ sensor, the catalytic converter and the coolant, and each sensor for the engine were connected to the ADC to find the parameters for storage time and recombustion mode. It was decided that the maximum storage time was 30 seconds at cold start. The time for storage was decreased with warmed start because the O₂ sensor's conversion at warmed start is much faster than that at cold start. The recombustion mode was decided by using the opening rate of throttle valve and engine speed to avoid engine torque fluctuation. Engine signals simulator is made to simulate the real vehicle's signals and the solenoid valve is used to duty control the supply rate of stored gas with no bad effect of engine torque importing the map of supply rate of stored gas from 64KB memory chip. The important factors of recombustion mode are engine speed, throttle opening rate and rapid and accurate decision of rich mixture in fuel injection.

住宅價格 決定要因에 관한 硏究 : 淸州市를 中心으로

김명호 檀國大學校 1994 국내박사

The purpose of this study is to investigate the housing price factors by using hedonic approach based on variables including physical elements, building site, regional environment in Chongju city. This study employed regression analysis and correlation research method to achieve the major objectives of this study. The followings are major findings as ; Firstly, the physical factors using variables in this research are a building feature, a floor space, a number of rooms, heating systems, kitchen facilities, garden space, a basement, a garage, and the building age. The results from correlation analysis between the factors and the housing price is analysed. The results show that a building feature, a floor space, a number of rooms, a kitchen facilities, garden space, a basement have highly affected to determine housrng price in Chongju city. Secondly, a site variable aaong other factors such as housing environment, a site space, disqust facilities has only high correlation with housing price. Thirdly, there are high correlations between housing price and environmental amenity, a distance to a market but shows no relationship between housing price and regional environmental factors. Fourthly, the building size, a number of rooms, garden space, the degress of satisfaction for housing have high correlations among variables. Fifthly, housing price in hedonice price function has significantly high coefficients in the physical factors, a building feature, a floor space, a number of rooms, garden space, a basement, a housing age. Especially a building site, a site space, a distance to the core of city have highly affected to housing price. Sixthly, the physical elements, a building feature, a floor space, a number of rooms, garden space, a garage, a housing age have also highly affected to housing price in the east Chongju city. Seventhly, the physical elements, a building feature, a floor space, a number of rooms, a basement, a housing age have also significantly affected to housing price in the west Chongju city. With the results as above, a physical elements and a building site of housing are main variables to determine the housing price in Chongju city. Specifically, the difference of housing price variables between the east parts and the west parts of Chongju city is due to amenity difference of two areas environment as regional factor. In conclusion, the important factors affected to housing price in Chongju city are building feature, a floor space, a site space, a number of rooms, garden space, a basement, a housing age.

울릉도 복음화의 현황과 역량 : 예장(통합)을 중심으로

김명호 한일장신대학교 2012 국내석사

무인 국방 로봇의 실시간 해석을 위한 기호연산 기법 기반의 효율적인 부분시스템 합성방법 연구

김명호 忠南大學校 大學院 2013 국내석사

This thesis proposes an efficient method for the real-time multibody dynamics analysis on the unmanned military robot which have six identical suspensions. To improve computational efficiency, the subsystem synthesis method has been employed. Using the subsystem synthesis method, the equations of motion of the base body and each subsystem can be solved separately. In the proposed method, various coordinates systems can beused and various integration methods can be applied in each subsystem. To achieve highly efficient simulations, the explicit-implicit integration method was suggested. In this integration method, the Adams-Bashforth 3rd oder explicit integrator is used to solve the equations of motion for the base body system and the HHT-α implicit integrator is utilized for obtaining the solutions for each subsystem. For the implicit integration formulas effectively, the symbolic generator using MAPLE software is used. Because the expression of the system Jacobian matrix is very complicated in the formulation. To apply easily symbolic language, the variety symbolic method(general method, common variable method, zero and one variable method, recursively method) were introduced. In order to see the effectiveness of the each method, half sine bump and rough terrain simulations of the 6x6 unmanned military robot have been carried out by comparing two different coordinates system(Cartesian coordinates, joint coordinates) and integration method(explicit integration method, explicit-implicit integration method). The CPU times of simulations are also compared to investigate the efficiency of the each method.

Epoxy/MA/PU 복합 재료의 상호 침입 망목 구조가 절연 파괴 특성에 미치는 영향

김명호 광운대학교 대학원 1994 국내박사

에폭시 수지는 전기·전자 절연 재료로 이상적으로 적합한 고유의 물리적 및 화학적 성질로 인하여 선진 복합 재료의 모체 수지로서 그 활용도가 매우 높다. 그러나 고온 영역에서 절연 파괴 강도가 급격하게 저하되며, 기계적 강도 및 열전도 등을 위하여 충진제를 첨가했을 때 절연 파괴 강도가 급격하게 저하되기 때문에 절연에 대한 신뢰도가 낮다. 이와 같은 문제점을 해결하기 위하여, 가교 고분자를 밀접하게 혼합시키는 유일한 방법인 상호 침입 망목 메카니즘을 에폭시 수지에 도입하였다. 기본의 에폭시 수지(E 계열)를 일차 망목으로 하고, 메타크릴산 수지를 이차 망목으로 하는 동시 상호 침입 망목(SIN:EM 계열) 시편을 제작하였다. 아울러 에폭시 수지를 일차 망목으로 하고, 메타크릴 산 수지와 폴리우레탄 수지를 이차 망목으로 하는 준 상호 침입 망목(PDIPN:EMP 계열) 시편을 제작하였다. 이와 같은 3종류의 시편에 충진제 SiO_(2)를 함량별로 0[phr], 5[phr], 50[phr] 및 100[phr]을 첨가하여 총12종류의 시편을 제작하였다. 기존의 에폭시 단일 망목 구조체가 다중 망목 구조체로 전환됨으로써 발생하는 morphology의 변화가 절연 재료의 특성에 미치는 영향을 비교 검토하기 위하여, 차동 열량 분석, X선 회절 분석, 전자 주사 현미경 관찰과 더불어 직류, 교류 및 충격 전압 절연 파괴 강도 측정을 행하였다. 그 결과, 동시 상호 침입 망목 시편의 유리 전이 온도가 가장 높았으며, X선 회절 분석과 전자 주사 현미경을 통한 관찰에서도 이러한 현상을 뒷받침하는 결과를 얻을 수 있었다. 이러한 결과들의 영향으로 인하여, 절연 파괴 강도 측정에서도 동시 상호 침입 망목 시편의 절연 파괴 강도가 가장 안정되고 우수하였다. 기존의 에폭시 단일 망목 구조체 시편은 모든 전압 파형의 고온 영역에서 절연 파괴 강도가 급격하게 저하되었으며, 준 상호 침입 망목 구조체 시편은 모든 전압 파형에서 전체적으로 절연 파괴 강도가 낮았다. 충진제 첨가시에 발생되는 계면으로 인하여, 단일 망목 구조체 시편은 충진제 함량의 증가에 따라 절연 파괴 강도가 저하 되었으나, 동시 상호 침입 망목 시편과 준 상호 침입 망목 시편의 절연 파괴 강도는 증가하거나 저하되지 않았다. 이상의 결과로 에폭시 복합 재료에 상호 침입 망목 구조를 도입하면 내부 구조의 견고 및 조밀화로 인하여 열적 및 전기적 특성이 우수한 절연 재료가 된다는 것을 확인하였다. Epoxy resin has been very frequently used as matrix resin of advanced composites owing to ideally suitable properties and inherent physical and chemical properties for electrical and electronic insulation. But the confidence to insulation of it is low because the dielectric breakdown stregth rapidly decreases in the high temperature region and when fillers are added to it for mechanical stregth and heat conduction etc. Interpenetrating polymer network, the only way to intimately combine crosslinked polymers was introduced to it in order to solving these problems. It was manufactured a simultaneous interpenetration polymer network (SIN:EM series) specimen in which the existing epoxy resin(E series) was taken as a first network and methacrylic acid resin as a second network. At the same time, it was manufactured a pseudo interpenetrating polymer network (PDIPN:EMP series) specimen in which epoxy resin was taken as a first network, and methacrylic acid resin and polyurethane resin as a second network. According to filler SiO_(2) classified by 0[phr], 5[phr], 50[phr] and 100[phr] weight percent was added to those specimens of three kind, the specimens of total twelve kind were manufactured. So as to investigate the influence of change of morphology due to change single netwrok polymer of the existing epoxy to multiple network polymer upon the properties of insulator, it was experimented with differential scanning calorimeter, X-ray diffraction, scanning electron microscope, and DC, AC and Impulse voltage dielectric breakdown. As the result, the glass transition temperature of simultaneous interpenetrating polymer network specimen was highest. Also the results that supports this phenomena could be obtained at the X-ray diffraction analysis and scanning electron microscope observation. Due to the effect of these results, the dielectric breakdown strength of SIN specimen too was stable and superior in the measurment of dielectric breakdown strength. The diejectric breakdown strength of the existing epoxy specimen with single network stucture was rapidly lowered at the high temperature region of all voltage waves. It of PDIPN specimen generally low at the all voltage waves. As added fillers generate interface, it of specimen with single network structure was lowered according to increase of filler weight percent, but it of SIN and PDIPN specimen were increased or not dereased. From these results, it was confirmed that thermal and electrical properties of epoxy composites can be superior as IPN introduced to it bring about firm and high density of inner structure.

廢合成樹脂와 無機物質을 利用한 吸着機能性 濾材 開發

김명호 전남대학교 대학원 2004 국내박사