• 농촌계획
• /
• 제18권4호
• /
• pp.61-67
• /
• 2012

Recently, brick walls are being widely introduced in rural areas. Walls are a very important design element of space. However, most brick wall works do not consider the human psychological characteristics. The purpose of this study was to investigate psychological characteristics on brick wall bonds such as the stack bond, running bond, english bond, flemish bond, america bond. The results of the research can be summarized as follows: 1)There is no statistical difference of psychological evaluation results among student groups using the semantic differential scale method using 10 adjectives. 2)Stack bonds have an uninspiring, artificial, simple, restful, boring and ordered psychological characteristic. Running bonds have an uninspiring, restful and ordered psychological characteristic. America bonds have a unique and modernistic psychological characteristic. English bonds have a unique, modernistic, complex and chaotic psychological characteristic. Flemish bonds have no critical psychological characteristics. 3)The running bond earned the highest score in preference, while the stack bond scored the lowest. Employment of brick wall bonds on this study was not highly preferred, hence it is necessary to develop a new brick wall bond design. 4)In conclusion, the proper selection of brick wall bonds is very important and we should consider human psychological characteristics in the design of rural areas.

• 전력전자학회논문지
• /
• 제6권1호
• /
• pp.82-89
• /
• 2001

본 논문은, HVDC 시스템의 인버터 제어기 및 고조파 필터의 설계를 위하여 동특성 및 정상상태 특성을 해석하는 방법을 제시한다. EMTP 시뮬레이션을 이용하면, 동특성 분석이 가능하며, 정상상태 특성의 분석은필터와 부하를 고려한 조류해석을 수행함으로써 가능하다. 또한 본 논문은 HVOC 시스템의 정적 및 동적 특성 분석이 가능한 단상 등가회로를 제안한다. 이 단상 등가회로에서 인버터는 스위치의 소호에 따른 전류원으로 취급된다. 또한 필터설계에 사용되고 있는 각종 목적함수를 단상 등가회로룹 이용하여 구할 수 있다, 본 논문은 전압의 고조파 성분 및 필터의 전력손실을 고려한 목적함수를 이용하여 펄터를 최적화하는 과정이 제시되어 있다.

• 한국소음진동공학회:학술대회논문집
• /
• 한국소음진동공학회 2005년도 춘계학술대회논문집
• /
• pp.551-554
• /
• 2005

This study uses a characteristic function to explain correlations between the objective function and design variables. Analysis of means and table of orthogonal array were carried out. The change of shape of diaphragm, thickness of diaphragm and voice coil weight based on the table of orthogonal array is made. Therefore this study carried to decide shape of diaphragm, voice coil weight and thickness of diaphragm for minimizing 1st natural frequency and maximizing 2nd natural frequency of diaphragm using design of experiments and characteristic function with constraints. we showed improved design factors that minimized 1st natural frequency and maximized 2nd natural frequency of diaphragm.

• 한국정밀공학회지
• /
• 제21권2호
• /
• pp.160-167
• /
• 2004

The correlation between the object function and the design parameter is shown on this paper by using the characteristic function for the mixed result of the structural analysis, the buckling analysis and the table of orthogonal array according to the original overhead crane's dimensional change. About the above two functions, the effectiveness of design change according to the change of design parameters could be estimated. Also, the overhead crane's weight is reduced up to 10.55 percent maintaining the structural stability according to the thickness of plate.

• 한국정밀공학회지
• /
• 제16권1호통권94호
• /
• pp.75-86
• /
• 1999

In the assembly system, a pallet plays an important role of transfer and storage. As products become various, many different pallets are also necessary. Since some of them are redundant, a design of pallet with high flexibility is important. This paper suggests design alternatives, in designing pallets with high flexibility. The purpose of this study is to rationalize assembly process of mid-small size products. Every pallet has suitability values depending on characteristic factors of a product, and this value is determined by using AHP (Analytic Hierarchy Process) technique. As the characteristic factors of a product are changed, the suitability value is also changed. Design alternatives can be found by tracing change of the suitability value, which are based on correlation between the characteristic factors of a product and a pallet element.

• 전기학회논문지
• /
• 제58권8호
• /
• pp.1624-1632
• /
• 2009

In this study, we introduce the design methodology of an optimized Interval Type-2 fuzzy controller. The fixed MF design of type-1 based FLC leads to the difficulty of rule-based control design for representing the linguistically uncertain expression. In the Type-2 FLC as the expanded type of Type-1 FLC, we can effectively improve the control characteristic by using the footprint of uncertainty(FOU) of membership function. Type-2 FLC has a robust characteristic in the unknown system with unspecific noise when compared with Type-1 FLC. Through computer simulation as well as practical experiment, we compare their performance by applying both the optimized Type-1 and Type-2 fuzzy cascade controllers to ball and beam system. To evaluate each controller performance, we consider controller characteristic parameters such as maximum overshoot, delay time, rise time, settling time and steady-state error.

• 한국실내디자인학회논문집
• /
• 제14권6호
• /
• pp.37-46
• /
• 2005

This study is focused on the indeterminacy of the contemporary social structure based on the philosophical concept of relationship. The purpose of this study is to present the index of the space planning that the contemporary society demands through analysis of a characteristics of the indeterminate program. As the result, we got a characteristic and a design method of the following indeterminate programs. (1)The characteristic of the interior space programs are in such cases as combined, the continuance, the pile, the juxtaposition, mixing and interference etc. (2) The characteristics of space planning are multiple changes of the space occupation, various sight experiences, folding structure, expansion of flow space, the insertion of a between spates etc. (3) The characteristic of space design expression is addition of various functions tv unification of a structural element and an element of furniture.

• 한국철도학회논문집
• /
• 제9권6호
• /
• pp.705-710
• /
• 2006

The railway has been developed largely by the characteristic factors of the railway through change of the society and culture. The railway trends has been changing from instinctive methods to settle the mass transport of the early days, to sensitive methods to pursue the railway culture centering around human being. As dividing by period according to the changes of railway trends into the external nation, there are to analyze the development history of the railway design. Accordingly each nation (United Kingdom, Germany, France, Japan) and the style's change, to confirm the changes into the design applied in society and culture needs, and to analyze by a year in changes of the environment and the railway history from the 1800's to 2005, so there contribute in the development of railway design to present the paradigm of the future railway by analyzing the trend according to the changes of railway design and the life environment in this paper.

• 품질경영학회지
• /
• 제22권3호
• /
• pp.34-53
• /
• 1994

Taguchi's robust design methodology has focused only on a single performance characteristic or response, but the quality of most products is seldom defined by a characteristic, and is rather the composite of a family of characteristics which are often interrelated and nearly always measured in a variety of units. The multiple performance characteristics problem is how to compromise the conflicts among the selected levels of the design parameters for each individual performance characteristic. In this paper, the modified desirability function using SN ratio which can be optimized by univariate technique is proposed and a parameter design procedure to achieve the best balance among several different response variables is developed We reanalyze two existing case studies by the proposed method and compare these results with ones by the sum of SN ratios and the expected weighted loss.

• 전력전자학회논문지
• /
• 제11권3호
• /
• pp.284-291
• /
• 2006

최근 가전 및 자동차시스템의 전동화에 따라 고효율 전동기에 대한 관심이 고조되고 있다. 따라서 본 논문에서는 고속구동시 고효율구동이 가능한 코어없는 AFPM전동기의 운전특성에 대해서 기술하고 설계관점에서의 그 전기적 특징에 대해서 논의한다. 특히 전동기 특성에 큰 영향을 미치는 역기전력 및 공극에서의 자계특성을 보이고 또한 인덕턴스특성에 따른 제어특성에 대해서도 시뮬레이션 및 실험을 통해 고찰한다. 회로망법을 기초로한 전동기설계결과와 출력특성실험결과의 비교검토를 통해 토크-속도 및 효율운전특성을 확인하였으며 제어특성을 확인한다. 아울러 코어가 없어짐에 따라 생길 수 있는 진동 및 소음특성에 대해서도 평가한다.