• Title, Summary, Keyword: Design Characteristic

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Determination of Design Parameters from Ground Investigation Results -Focus on geotechnical characteristic values- (지반조사결과에서 설계변수의 결정문제 -지반특성치 산정을 중심으로-)

  • Yoon, Gil-Lim;Yoon, Yeo-Won;Kim, Hong-Yeon
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.126-133
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    • 2008
  • Geotechnical limit state design methods; LRFD of North America is an approach that estimates resistance using design model and then multiplies resistance factor by calculated resistance to reflect the uncertainty of geomaterials and design models; whereas, Eurocode of the Europe employs the partial resistance factor applied directly to each variable in the resistance equation that individual soil properties such as cohesion and angle of internal friction are applied. This discussion paper is a study on characteristic value which has globally been argued through processing of development of Eurocode 7 for geotechnical design even to the present. Estimating the characteristic value of soil properties affects not only determination of design value applied directly to design of geotechnical structures, but also economic feasibility and stability of the structures.

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Design and Characteristic Analysis of Vaccum Pump Using Moving Magnet type Linear Oscillatory Actuator (가동 영구자석형 리니어 진동 액츄에이터를 이용한 진공 펌프의 설계 및 특성해석)

  • Cho, Sung-Ho;Kim, Duk-Hyun;Kim, Gyu-Tak
    • Proceedings of the KIEE Conference
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    • pp.61-63
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    • 2002
  • This paper deals with the design of vaccum pump using moving magnet type linear oscillaory actuator based on the design procedure and the characteristic analysis. To improve the starting characteristic, the optimum spring constant is detected and redesigned. The parameter was calculated by Finite Element Method(FEM). In order to dynamic characteristic analysis. Time difference method with voltage and kinetic equation is used.

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Adaptive Design of IIR Digital Filters Using Output Error Method with Adaptive Compensator (적응 보상기를 가지는 출력오차 방법을 이용한 IIR 다지탈 필터의 적응적 설계)

  • 배현덕;이종각
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.36 no.9
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    • pp.685-690
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    • 1987
  • Adaptive design of IIR digiral filters using equation error method has been studied. In this paper, a design technique of IIR digital filters using output error method with adaptive compensator is presented. In computer simulation results, it is shown that flat response characteristic in pass-band, below-40[dB] attenuation characteristic in stop-band, sharf cut-off characteristic in transition-band, and phase characteristic is linearin pass-band.

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Design Factor and Formative Characteristic on Korean Aesthetic in Fashion (패션에 나타난 한국미의 조형성과 디자인 요소)

  • Ryu, Hyun-Jung
    • Journal of the Korea Fashion and Costume Design Association
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    • v.12 no.1
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    • pp.51-59
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    • 2010
  • The purpose of this study is to help understanding of Korean fashion image by studying of design factor and formative characteristic. The methods of this study are the study of academic literatures as well as practical study through the analysis of case studies about actual works. The summary of this study's results is like followings. First, Perspectives seeing formative characteristic on Korean fashion image are Shape with a line, color, material, pattern, accessories. Second, Design factors deciding Korean fashion image are pattern, then in order of shape, color, material, accessories. Third, In results on design factor deciding Korean fashion image, when fashion designers focus on pattern, pattern is focused on without regard for other design factor. But color and material are accompanied by other design factor in expressing Korean fashion image. As fashion design point expressing Korean astetic, use of pattern is minimized other design factor, color and material are used with other design factor, then Korean fashion image will come out more than other time else. If We develop Korean fashion design to concentrate on shape and pattern, Korean fashion culture will be known to world people and beautiful value of Korean fashion will be handed effectively.

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A Study on the Method to Apply LED to Fashion Design and Its Expression Characteristic (LED의 패션디자인 적용방법과 표현특성)

  • Kim, Eon-Jeong;Yoo, Young-Sun
    • Journal of the Korea Fashion and Costume Design Association
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    • v.13 no.3
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    • pp.15-29
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    • 2011
  • Fashion industry is high value added indust교, whose price is decided by design value so it requires creativity and uniqueness for competition. The purpose of this study is to grasp how the design characteristic of LED that can express new creativity and uniqueness is applied to fashion design and find out the expression characteristic of LED used in fashion design. The study subjects, the design to which LED is applied, were extracted from fashion show and internet search. As a study result, the expression characteristics of LED used for fashion design are as follows. First, for function, tool function that can provide convenience for life and expression function that can provide user with emotional and psychological satisfaction and communication were allowed. Second, for aesthetic changes, many-sided, multiple colors and pattern displays of LED changed design meaning visually and caused aesthetic emotion for observer. Third, for interaction, physical factor of LED, user, dress and environmental factor interacted each other, enabling both-sided communication. Fourth, for amusement, multiple lights of LED activated visual and tactile sense, expressing usefulness and joyfulness on the basis of various display possibilities and changes. The study result will be helpful for developing more unique, creative design according to the change of age and development of science.

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Optimal Design of Single-Phase Line-Start Permanent Magnet Synchronous Motor by using Design of Experiment (실험계획법을 이용한 단상 유도형 동기전동기의 최적 설계)

  • Kim, Seung-Joo;Jung, Dae-Sung;Lee, Chul-Kyu;Lee, Hyung-Woo;Lee, Ju;Oh, Se-Young
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.56 no.4
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    • pp.699-704
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    • 2007
  • In this paper, optimized model was designed for the starting characteristic of the Single-Phase Line-Start Permanent Magnet Synchronous Motor by using the Design of Experiment. A field pole angle, thickness and distance from center axis of permanent magnet were selected as design factor. We executed the transient state characteristic analysis of 8 test models. The transient state characteristic analysis was executed by using the 2 dimensional Finite Element Method and the Time Difference Method. We checked the fact that the selected design factor affected starting characteristic of the Line-Start Permanent Magnet Synchronous Motor. Depend on this result we found the optimized design point by using the response optimization.

A Study on Characteristics of Perceptual Presentation Methods of Interior Design (실내디자인의 지각적 프리젠테이션 방법의 특성에 관한 연구)

  • 이종란
    • Korean Institute of Interior Design Journal
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    • no.29
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    • pp.265-272
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    • 2001
  • The perceptual presentation of interior design is to represent an interior space planned by a designer as if people see it in reality. The perceptual presentation methods that have developed are perspectives, full-scathe models, small-scale models, photography of models, video taping of models, computer images, computer animation, and virtual reality. The purpose of this study is to investigate limits of those perceptual presentation methods according to their characteristics. The methods have characteristics that are either static or dynamic and either monoscopic or stereoscopic. In terms of representing interior spaces and perceiving interior spaces, the dynamic characteristic is more helpful than the static characteristic because the dynamic characteristic provides consecutively changing views of interior spaces when people walk around within the spaces. The stereoscopic characteristic is more helpful than the monoscopic characteristic because the stereoscopic characteristic provides the binocular depth perception. Full-scale models, small-scale models, virtual reality that have dynamic and stereoscopic characteristics, are most effective. The next effective methods are video taping of models and computer animation that have dynamic and monoscopic characteristics. The last effective methods are perspectives and photography each of models that haute static and monoscopic characteristics. But the most effective methods can nut be said that those are perfect because each of them still has limits. Designers have to consider the limits of each perceptual presentation method to find a way that shows their designs most effectively. To develop the perceptual presentation methods of interior design, researchers should focus on the helpful characteristics that are dynamic and stereoscopic.

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Dynamic Characteristic Analysis of Single-Phase Line-Start Permanent Magnet Synchronous Motor by Parameter Variation (단상 유도형 동기전동기의 파라미터 변화에 따른 동특성 해석)

  • Oh, Se-Young;Jung, Dae-Sung;Lim, Seung-Bin;Lee, Ju
    • Proceedings of the KIEE Conference
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    • pp.763-764
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    • 2006
  • In this paper, optimized model was designed for the starting characteristic of the Single-Phase Line-Start Permanent Magnet Synchronous Motor by using the Design of Experiment. A field pole angle, thickness and distance from center axis of permanent magnet were selected as design factor. We executed the transient state characteristic analysis of 8 test models. The transient state characteristic analysis was executed by using the 2 dimensional Finite Element Method and the Time Difference Method. We checked the fact that the selected design factor affected starting characteristic of the Line-Start Permanent Magnet Synchronous Motor. Depend on this result we found the optimized design point by using the response optimization.

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A Study on the Output Characteristic of Vacuum Booster (진공배력장치 출력특성에 대한 연구)

  • Lee, C.T.
    • Journal of Power System Engineering
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    • v.13 no.6
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    • pp.110-116
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    • 2009
  • In the present study, we proposed a simulation model of vacuum booster with AMESIM software to predict the output characteristic. And we performed the sensitivity analysis of output characteristic with main design parameters, such as diaphragm diameter. All of these parameters are main design parameters in the procedure of vacuum booster design. The simulation results of this paper offer qualitative information of vacuum booster output. Therefore, the simulation results of this paper will be used effectively for the design procedure of vacuum booster in the industrial field.

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PI Controller Design Based on Characteristic Parameters and Zero Position Adjustment for an Oil Cooler System (오일쿨러시스템의 특성근과 영점 조절에 의한 고성능 PI 제어기 설계)

  • Choi, Do-Kyung;Jeong, Seok-Kwon
    • Journal of Power System Engineering
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    • v.20 no.4
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    • pp.83-90
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    • 2016
  • This study proposes a high-performance PI controller design method for an oil cooler system in conjunction with zero position adjustment and the characteristic parameters in its closed loop control system. The characteristic parameters included PI gains are decided by design specifications such as settling time and overshoot. The fine tuning on decided gains was performed by adjustment the zero position to get more desirable control performances. The simulations and experimental results show that the proposed PI controller design for an oil cooler system was possible to accomplish good control performances and to satisfy the design specifications.