Vibration control of a vehicle’s seat suspension featuring a magnetorheological damper based on a new adaptive fuzzy sliding-mode controller

Phu, Do Xuan,Choi, Seung-Bok,Lee, Yang-Sub,Han, Moon-Sihk Professional Engineering Publishing Ltd 2016 Proceedings of the Institution of Mechanical Engin Vol. No.

<P>This work presents a new design for adaptive fuzzy sliding-mode control based on two methodologies, namely H control and sliding-mode control, and its control effectiveness. This is achieved by implementing a control scheme for vibration control of a vehicle with a seat suspension on which a magnetorheological damper is installed. The sliding surface of sliding-mode control is analysed by separation into two matrices: a Hurwitz-constants matrix and a constant matrix. These matrices are the basis for establishing the proposed control scheme combined with the H technique. The control scheme consisting of the combination of H control and sliding-mode control is reinforced by a new robustness function featuring an exponential function. In this work, a fuzzy logic model, which is well known to be an excellent model for uncertain dynamic systems, is integrated with the proposed control algorithm. The fuzzy logic model adopted in this work is an interval type-2 fuzzy model featuring fast computation of the output. The effectiveness of the proposed control scheme is evaluated through both computer simulations and experimental realization on a vehicle with a seat suspension which is equipped with a magnetorheological damper. In addition, in this work, two existing adaptive controllers are modified and implemented for comparative work with the proposed control scheme. It is shown that the proposed control scheme exhibits a much better vibration control performance than the two existing adaptive controllers do.</P>

독한사전 모델 개발 연구

양도원 한국독일어교육학회 1999 외국어로서의 독일어 Vol.5 No.-

Die vorliegende Arbeit ist zunachst ein Erfahrungsbericht, den ich in den letzten Jahren beim Verfassen eines deutsch-koreanischen Worterbuches gesammelt habe, und auch eine kritische Selbst-betrachtung, die ich im Laufe meeines neuen Kenntnisserwerbs uber die Lexikographie gewonnen habe. In der lexikographischen Geschichte stehen zwei Stellungen gegenuber, namlich die der Lexikographer bzw. der treibenden gesellschaftlichen Krafte und die der Benutzer. Um den ersten Umgang mit dem deutsch-koreanischen Worterbuch zu erleichtern, habe ich ein neues Worterbuchkonzept entworfen, das mit dem Prinzip "Benutzerfreundlichkeit” zu verzeichnen ist. Diese Besonderheiten sind sowohl bei der externen als auch internen Selektion der Lemmata zu erkennen. Nach der Auffassung des Verfassers soll ein Lernerworterbuch den Anfangern nicht nur linguistische, sondern auch kulturelle Kenntnisse und Inhalte vermitteln, damit sic durch verschiedene Sinneskanale konfrontiert werden sollen. Diese Auffassung wird mit wissenschaftlichen Ergebnissen ion anderen Disziplinen zusammengefasst begrundet. Es ist die weitere Aufgabe des Worterbuchverfassers, die Schwache und Unkorrektheit herauszufinden und sic zu beheben. Hiermit werden eine kritische Betrachtung und Verhesserongsvorschlage van Fachkollegen in jeder Form herzlich auf- und wahr-genommen.

독문학 교수법의 기초 이론 연구 : 엘러스의 이론을 중심으로

양도원 한국독일어교육학회 1996 외국어로서의 독일어 Vol.1 No.-

In dieser Arbeit wurde versucht, den Paradigmawechsel in den Leserkten zu beleuchten. Die Rezeptionsforschungen in der Literaturwissenschaft, die in den letzten 20 Jahren hervorgebracht wurden, beruhen vor allem auf den Grundlagen der Literatursoziologie, Hermeneutik und Literaturgeschichte. Das forderte auf, den Status des Lesers neu einzuordnen. Dabei wurde klar, deβder Leser eine neue Rolle ubernehmen muβ. M. Dahrendorf bezeichnete es als eine ?kopernikanische Wende" im Lesen, daβ sich der Leser aktiver mit dem Text auseinandersetzt. Das heiβt, der Leser liest und sieht una sieht den vorhandenen Text distanziert und interpretiert ihn nach seinem Geschmuak. Nach Seantje Ehlers ist Lesen eine Verstehenstatigkeit, die darauf zielt, sinnvolle Zusammenhange zu bilden. Auf der einen Seite wird sie von dem Text und seiner Struktur gesteuert, auf der anderen Seite von dem Leser, der sein Vorwissen, seine Erfahrung, seine Neigungen und sein Interesse an einen Text herantragt. Im laufe des Lesens entsteht ein Gesprach zwischen dem Text und dem Leser, das durch verschiedene Faktoren beeinfluβt wird. Diese Faktoren werden auf ihre lesedidaktische Bedeutung hin gepruft. Hier sind literarisch-asthetische Spielregeln und Techniken, die Konventionalisierung der literarische Strategien und Darstellungstechniken aufzudecken. Nach der Auffassung von S. Ehlers kann man Lesen und Verstehen lernen, die Texte selber zeigen dem Leser vielfaltige Wege des Verstehens und Deutens. Es gibt nicht eine Wahrheit, nicht eine Sichtweise und nicht eine Deutung. Un eine Wahrheit, eine Sichtwiese oder eine Deutung gewinnen zu konnen, muβ man imstande sein, sich partnerschaftlich mit dem Text zu unterhalten. Das ist gerade die Aufgabe des fremdsprachlichen Lesers.

循環 흐름을 가진 固定層 反應器의 不安定性에 관한 硏究

梁海永,韓道興,李明浩 嶺南大學校 工業技術硏究所 1993 工業技術硏究所論文集 Vol.21 No.1

In this study we observed the possible existence of multiple steady states for CO oxidation over Pt/Boehmite catalysts, which is one of instabilities, and also analyzed numerically these phenomena with some proper reactor models. The form of our reactor was a non-adiabatic fixed bed with recycle. The reactor models include both one phase model with plug flow and two phase model with heat transfer resistance between gas phase and solid one. Especially, it was attempted to explain the multiplicity features with a very wide region, whose features could not have been clearly explained by means of any other model, by the modified two phase model which includes a term related with memory effect of catalyst temperature. The experiments showed that the effect of recycle ratio on multiplicity region could not be revealed definitely for our experimental conditions. This may arise from the facts that the multiplicity for the CO oxidation over Pt/Boehmite cataysts resulted mainly from strong heat transfer limitation rather than from mixing effect related with recycle flow since the CO oxidation was a reaction with both very high generation and rapid reaction rate.

B2B 환경 제조업의 공급업체에 대한 SCM 구축

양광모,류도희,박주식,강경식 明知大學校 産業技術硏究所 2002 産業技術硏究所論文集 Vol.21 No.-

Today's environment of enterprise is changing. They have to face customers' demands with the right product, the right service and supply them at the right time. And also cut down logistics and inventory cost and bring up the profit as much as they can. This means the change of petting enterprise first in importance to putting customer first in importance. therefore to correspond to customer's demand, shorting lead time is becoming a essential condition. The answer to this changes of environment is supply chain management. In this study, we use Goldratt's drum-buffer-rope scheduling in between manufacturer and supplier. And when shortage of inventory occur, search for the supply chain's CCR. Pressing CCR leer more production, and supply inventory from logistic center to guide for inventory buffing. using logistic warehouse between manufacturer and supplier, can execute function of buffer.

CO 산화반응에서 지속진동에 관한 연구

양해영,한도흥,하병환 嶺南大學校 工業技術硏究所 1994 工業技術硏究所論文集 Vol.22 No.2

Sustained oscillation, including a constant amplitude of less than 10℃ in temperature and a short period between several seconds and several minutes, was experimentally found in the CO oxidation over fixed bed of platinium/γ-alumina catalysts. From this study, it was believed that the oscillation could occur within the kinetic region in exclusion of heat transfer limitation. On the other hand, under some more strong heat transfer limitation,the temperature-oscillation had a long period of several ten minutes and two types of concentration-oscillation, which periods were short and long, could simultaneously exist at one period. Finally, under a strong heat transfer limitation, the oscillation disappeared but rate-multiplicity phenomenon only appeared.

고무인상채득시 지대치 충진재료와 표면처리법의 영향

정도진,양홍서,박상원 전남대학교 치과대학 2000 전남치대논문집 Vol.12 No.1

The purpose of this study is twofold. One is to evaluate the wettability of 4 elastomeric impression materials on tooth and different kinds of filling materials. The other is to identify the effect of topical surfactants sprayed on the surface of each impression. The elastomeric impression materials used in this experimental study were one polyether(Impregum F) and three polyvinyl siloxanes(Provil novo, Zerosil, Imprint). The abutments were prepared for 3/4 crown or onlay on the extracted human first molar. The filling materials used in this study for the duplication of prepared abutment were composite resin, amalgam, and casting metal. Impression was taken by manufacturer's recommendations and the number of voids on the impression surface was counted. The topical surfactants were Spannex Ⅱ?? and Cohere??. The wettability was evaluated by comparing the number of voids between non-treated group and treated groups. The results were as follows: 1. Zerosil?? showed the least number of voids on the impression surface. The number of voids increased in order of Provil novo??, Impregum F??, and Imprint??. 2. Impregum F?? and Zerosil?? showed the least number of voids on the surface of dental stone master cast. The number is increased in order of Provil novo?? and Imprint??. 3. When abutment material is tooth, the number of voids on the surface of master cast was smallest compared with that of other abutment materials. The number of voids increased in order of casting metal, amalgam and composite resin. 4. The number of voids on the surface of the dental stone master cast was smallest when SpannexⅡ?? was used, followed by Cohere?? treated group and non-treated group. These results suggest that the difference in wettability caused by the types of rubber base impression materials as well as abutment materials can affect the number of voids. And the use of topical surfactant for rubber base impression materials can improve the wettability of the materials and enhance the accurate master cast which has fewer surface voids.

百濟 周留城考

盧道陽 명지대학교 1979 明大論文集 Vol.12 No.-

위장관선암에서 Secretory Component의 분포에 관한 연구

김도진,양승하,강상균 순천향대학교 1992 논문집 Vol.15 No.2

Secretory component(SC) is a portion of secretory IgA and acts as a specific receptor to IgA, This component has specificity in glandular epithelial cells only. Also this specificity maintain in adenocarcinoma of organs. Therefore, to understand the correlationship of SC along the differentiation of adenocarcinoma of various organs such as stomach, small and large intestine, and gallbladder, 57 cases were subjected(stomach 27 cases, small intestine 4 cases, large intestine 24 cases, and gallbladder 2 cases). And then performed immunoperoxidase stain by Avidin-Biotion-Comprex method using anti-SC serum, were performed then analyzed their histologic reaction. Results obtained are following as : 1. Rositive reaction of SC in adenocarcinoma of each organ showed 17(63%) of 27 cases in the stomach, 3(75%) of 4 cases in the small intestine, 18(75%) of 24 cases in the large intestine, and 1(50) of 2 cases in the gallbladder. 2. Positive reaction of SC showed difference along the dirrerentiation of the adenocarcinoma of the stomach, bearing 6(86% 0 of 7 well differentiated, all of 8 moderately differentiated and 3(25%) of 12 poorly differentiated cases. 3. In the adenocarcinoma of the large intestine, positive reaction of SC was 13(93%) of 14 cases in well differentiated form, 5(71)% of 7 cases in moderately differentiated, and 1(33%) of 3 cases in pooly differentiated form. 4. Adenocarcinoma of the small intestine showed positive reaction of SC all of well differentiatel form and 1(50%) of 2 cases of moderately differentiated form. Adenocarcinoma of the gallbladder showed positive reaction in 1 of moderately differentiated and negative reaction in 1 of poorly differentiated form. Above findings reveals that adenocarcinoma of each organs has almost simillar positivity rate of SC, but difference according to differentiation of the carcinoma.

유방초음파 검사의 유용성에 대한 연구

문양인,김병학,명화련,도윤수,김계환,손정훈,김미회 한국건강관리협회 2000 건협 Report Vol.3 No.-