다이나믹 프로그래밍을 이용한 궤도의 최적 재돌입

김중완,이만형 동아대학교 공과대학 부설 한국자원개발연구소 1985 硏究報告 Vol.9 No.1

The optimal re-entry from orbit problem presents some very interesting problems to be solved. A dynamic programming solution is very well suited for the problem compared to a two point boundary value with 8 state and costate equations using the minimum principle. The dynamic programming solution is also more attractive than a brute force grid type search method. Even so, the problem presented here requires more work and computer time than an end of the study allows.

열가소성 실리콘 가황물(Thermoplastic silicone vulcanizate)의 가교시스템이 기계적 특성에 미치는 형향 연구

김중완,이진혁,최명찬,윤유미,강현민,배종우 한국공업화학회 2021 한국공업화학회 연구논문 초록집 Vol.2021 No.-

도립진자의 동역학과 제어알고리즘

김중완,최영철,김재헌 동아대학교 생산기술연구소 2001 生産技術硏究所硏究論文集 Vol.6 No.1

The results of this research is shown confirmly need and effect of closed loop control using ECP Model 505 Inverted Pendulum This is not construction as normal load-on cart Inverted Pendulum. This linkage mechanism includes a moment-arm counter-load to be able to adjust and control perpendicular and the horizon bars. It controled both horizontal bar and vertical bar for control inverted pendulum in gravity field. ECP Model 505 Inverted Pendulum system achieved PID, VSC for non-minimum phase and conditional stability plant (right-half plane poles and zeros) by adjusting Position of centered mass. Especially, the result of variable structure control was finely shown high performance of closed loop control that compensate unstable situations for multi-degree systems.

가변구조제어계의 속응성 향상 및 정상상태 오차의 제거 ( The Improvement of Rapid Response and the Elimination of Steady State Error of Variable Structure Control Systems )

김중완,이만형 대한전자공학회 1988 대한전자공학회 학술대회 Vol.1988 No.01

유니사이클 로봇에 대한 인간적 추론 제어 메카니즘

김중완,안찬우,전태옥,전언찬,정희균 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

Our unicycle has simple mechanical structure.But unicycle's dynamical system is a very sensitive unstable nonlinear system. equations of motion for a simple unicycle robot were derived using Lagrage's method. In this paper, a human fuzzy influence control mechanism was established throught an inquiry into human riding a unicycle, and we developed a hybrid controller to control our unicycle robot. This proposed hybrid controller is consisted with a pure PD and two fuzzy gain scheduled controllers and a direct fuzzy logic controller. Computer simulation results show that our hybrid controller has robust control performnance to unstable nnonlinear unicycle robot system.

수직3관절 로보트 매니퓰레이터에 대하여 시변슬라이딩레짐을 사용한 가변구조적응제어의 응용

김중완,강대기,김병오,오현성 한국정밀공학회 1994 한국정밀공학회 학술발표대회 논문집 Vol.1994 No.5월

乾癬 治療에 있어서 Methotrexate의 투여방법에 관한 연구

김중완,손경애 中央醫學社 1971 中央醫學 Vol.21 No.6

For decreasing of the toxic reaction of Methotrexate in treatment of psoriasis, many authors studied about the doses schedules in administration. We studied previously about clinical effects and side reactions of Methotrexate in 33 psoriatics and found out of the similar effects between the method of large single doses and small daily doses12). Rall considers liver cell may store Methotrexate at least 64 hours depending on cell turnover and platelets life span was 8-9 days and leukocyte life span was 6-11 days. For decreasing of hepatotoxic reaction, more short period of administration and at least 3 days resting period is need respectively16). Seven men and six women were studied, ranging in age of 21 to 69 years old. Eleven of these 13 patient had previously received oral and local corticos-teroid therapy but no antifolic agent and two patient had received oral Methotrexate 5mg in divided doses for 7 days with 3 days resting period.(7X 7 method). Methotrexate 2.5mg tablet administered to all of 13 cases 2 times or 3 times a day for 3 days and followed by 3 days resting period (3X3 method). This method was repeated from 2 to 4 course on accordance of patient's condition. Complete blood count, urinalysis, alkaline phosphatase, serum glutamic pyruvic transaminase, thymol turbidity and serum bilirubin were performed before Methotrexate were used. Repeated SGPT on begining and finishing of each course of methotrexate administration were carried out. The degree of improvement was noted on I to IV scale and was always evaluated by the same observer. I was cessation of scaling, II was less erythema and infiltration, III was marked diminution of erythema without infiltration, and N was almost no erythema. All of the patients Showed improvement of involved skin(Table 1) In 6 of the 13 patients the improvement maximal IV improvement was noted; in 4 patients III improvement was noted; in 2 II patients 11 inlpr-ovenlent was noted; in one patient I improvement was noted. The side effects appeared in 4 patients with symptoms of anorexia, headache, dizziness and herpes somplex labialis. (Table 1.)During treatment, anemia was not appeared but there were leukopenia and thrombocytopenia in hematologic examination of the most patients. Before medication, SGPT was all n after administration of Methotrexate SGPT levels increased in all Patients but only 4 showed above the normal. In 5 of the 13 patients elevated by SGPT by administration of Metllotrcyate was decreased by the three days resting period(Table 2). Conclusively after study of 13 psoriatics with 3 x 3 method of Methotrexate administration, following results are obtained. 1) More shortening the time of of improvement of psoriatic skin lesions than 7x 7 method. 2) Clinical side effects decreased to 30% in 7x7 method. 3) Two of the 13 patients, who showed side reactions by 7X7 method Previously, showed no clinical side reactions by 3x3 method. 4) The SGPT level showed more slow going curve in elevation 3x3 method, by 7x7 method. 5) 3x3 method may be not always reasonable in all patient but it can be started by one tablet at first day with gradually increasing to 3 tablets a day and can be continued for 3 days in accordance with patient's condition as upper limit and must have resting period at least more than 3 days.

가변구조제어계의 속응성 향상 및 정상상태오차의 제거

김중완,이만형 동아대학교 공과대학 부설 한국자원개발연구소 1989 硏究報告 Vol.13 No.1

In this paper, a methodology is developed to remove the steady state error and to improve the rapid response for variable structure control (VSC) system. A new time varying sliding regime is developed and applied to second order system. Simulated results are compared with those of some typical VSC metholdology.

건선치료에 있어서 methotrexate의 투여방법에 관한연구

김중완 대한피부과학회 1971 대한피부과학회 학술발표대회집 Vol.23 No.-

한우의 등급간, 성별간 품질 특성 및 이화학적 성분 규명

김중완,천용헌,장애라,이상옥,민중석,이무하 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.5

본 연구는 등급판정시 객관적 평가를 하기 위해 등급판정 부위인 등심에 관한 성분의 표준을 정하고 본 부위에서의 도체의 성별간, 등급간의 특성을 규명하여 객관적인 육질평가를 할 수 있는 품질요인을 찾아 그 기초 연구자료를 삼으며, 등급과 성별에 따라 실제 소비자들이 느끼는 품질의 특성을 알아보고자 실시되었다. 한우 등심에서의 성별간 등급간 이화학적 성분 비교를 위하여 근내지방 함량, myoglobin 함량, 전단력, 보수력, pH, 육색을 조사한 결과 근내지방도만이 등급에 따른 유의적인 차이가 있었다. 또한, 한우 도체에서 성별, 등급간 품질인자의 특성을 규명하려 했지만 성별, 등급별 특징을 짓는 품질요소간 유의성이 거의 없는 것으로 나타나 각각의 도체의 품질 특성을 나타내는 품질인자를 찾을 수 없었다. 한우 도체에서의 품질요인간의 상관도를 보면 수분 함량이 myoglobin 함량(0.514), 전단력(0.503)과 정(+)의 상관관계를 나타내었고, 근내지방도(-0.957), 보수력(-0.491)과는 부(-)의 상관관계를 나타내고 있었다. 근내지방도는 전단력과 부의 상관관계(-0.565)를 가지고 있었다. 신선육의 척도묘사 결과를 보면 aroma가 제일 높은 거세우 2등급에서 기호도도 좋은 것으로 나타났다. 조리육에서의 관능검사 결과를 보면 aroma, flavor, 다즙성, 연도 등이 기호도에 많은 영향을 끼치고 있음을 보여주었고, 신선육에서 느끼는 관능적 특성이 조리육에서도 같은 영향을 끼치는 것으로 나타났다. 조리육의 관능검사 결과와 도체품질 요인간의 상관도를 보면 수분 함량은 다즙성과 연도, 기호도에 많은 영향(-)을 끼치는 것으로 나타났고, 지방 함량은 연도와 직접적인 상관은 없는 것으로 보여진다. 신선육의 관능검사 결과와 도체 품질요인과의 관계를 보면 육색이 육색소와 전단력에 영향(+)을 끼치고, 근내지방도는 산패취와 연관 있는 것으로 나타났다. This study was carried out to determine the physico-chemical components and to examine it the consumers can tell the difference in eating quality of loins of Hanwoo with grade and sex. Loins of 36 carcasses were selected and their intramuscular fat, color, pH, water holding capacity, shear force, the amount of myoglobin and moisture content were measured. The result was that only intramuscular fat was significantly different with grades. In Pearson correlation coefficients among quality factors, moisture content increased significantly with the amount of myoglobin(0.514) and shear force(0.503) and decreased as intramuscular fat(-0.957) and water holding capacity(-0.491) increased. Also, content of intramuscular fat decreased as shear force(-0.565) increased. According to descriptive analysis, aroma and acceptability in the 2nd grade steer showed the highest score. Aroma, juiciness and tenderness may affect acceptability of cooked meat. Also, juiciness, tenderness and acceptability had a negative correlation with moisture content and the intramuscular fat did not affect tenderness directly.