• Title, Summary, Keyword: Design Characteristic

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Modeling of the Cell Gap Process Characteristic on the Polymer Substrate for Flexible Liquid Crystal Display Applications

  • Ko, Young-Don;Hwang, Jeoung-Yeon;Seo, Dae-Shik;Yun, Il-Gu
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.502-505
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    • 2005
  • The modeling for the cell gap process characteristic on the flexible liquid crystal display (LCD) process was investigated by response surface methodology (RSM). D-optimal design is carried out to build the design matrix. The analysis of variance (ANOVA) technique was used to analyze the significance level. The statistical analysis was used to verify the response surface model. The desirability function was used in the design-space optimization.

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A Study on Fashion Design for Up-cycled Waste Resources (폐자원을 활용한 업사이클링 패션디자인 연구)

  • Park, Ju Hee;Kim, Youn Hee
    • Journal of the Korean Society of Costume
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    • v.64 no.8
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    • pp.138-154
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    • 2014
  • The purpose of this study was to propose up-cycling fashion designs, based on guidelines derived from up-cycling fashion brand products and their required elements of the design. The study thus categorized required elements into environment, significance, economy, function, design, and material, then extracted a set of design guidelines. The guidelines for waste resource-based up-cycling fashion design include the followings: First, authenticity, taking mutual environmental relations into account. Second, rarity of products beyond the domain of standardized ready-made goods thanks to manual operation. Third, storytelling, reflecting the consumer history. Fourth, sustainability to signify the circulation of matters. Fifth, experimental characteristic to fulfill creative innovation. Sixth, changeability through interactions with wearers. The investigator decided design concepts based on them and created up-cycling design works with waste plastic bags, shirts, stockings, neckties, outdoor mats, and backpacks in a variety of formative expressive techniques.

A Study on the furniture Design by research of working furniture in office -Focused on the furniture type of solo worker on characteristic kinds of works - (업무공간 가구 사용에 따른 가구디자인 적용에 관한 연구 - 업무특성에 따른 개인 업무자 가구구성을 중심으로 -)

  • 신동준
    • Korean Institute of Interior Design Journal
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    • no.38
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    • pp.209-216
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    • 2003
  • The purpose of this study is to develop furniture design for work space of Office based on the research of furniture design and the survey on the design of the office furniture. The office furniture Is designed in order to use the space flexibly and for the user design in the work space. The furniture type of solo worker on characteristic kinds of works should have a simple shape and it should be safe and easy to move because it has a structural function. The furniture in office should be designed in consideration of moveing line while working. The development of furniture in office which suit human body should be made in consideration of human factors and the study on furniture design in office. As above mentioned, to research and study on the furniture design of working furniture in office which reduces fatigue resulted from labor for office, human factors aspect should be considered, furthermore psychological, mental approach to Ideal solution should be made.

Parameter and Brightness Characteristic of Antena according to Coil turns on Electrodeless Fluorescent Lamp (무전극 램프 안테나의 권선수에 따른 휘도와 파라미터 특성)

  • Yang, Jong-Kyung;Choi, Gi-Seung;Pack, Gwang-Hyeon;Choi, Yong-Sung;Lee, Jong-Chan;Park, Dae-Hee
    • Proceedings of the KIEE Conference
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    • pp.281-284
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    • 2004
  • In Recent, it became necessary to envelope the technology about electrodeless fluorescent lamp according to demand of the electrodeless fluorescent lamp system that used higher efficiency and advantage of long-lifetime. Especially, in the electrodeless fluorescent lamp which used H-mode, efficiency of lamp is decided from matching parameter of antena and inverter So it is of the utmost importance to design antena and inverter. Therefore, this paper used a transformer principle for efficiency rising of electrodeless fluorescent lamp and interpreted an equivalent circuit, used an impedance analyzer in order to confirm a performance enhancement of lamp along design of antenna, and confirmed parameter characteristic of R, L, C, Z, Phase, Q-factor along a change of magnetic flux density. Also, this paper confirmed a luminance characteristic of electrodeless lamp along parameter change with measuring optical characteristic along a change of magnetic flux density.

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The Measurement and Analysis of Radio Characteristic of 424 MHz Short Range Wireless Frequency (424 MHz 소출력 무선주파수 전파특성 측정 및 분석)

  • Lim, Yong-Hun;Choi, Hyo-Yul;O, Kyu-Whan;Lee, Beom-Seok;Hyun, Duck-Hwa
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.437-442
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    • 2005
  • This paper deals with the measurement and analysis of radio characteristic of 424 MHz for using the automation of transmission and supply of electric power, ana automatic meter reading(AMR). Normally radio propagation characteristic is the base of system design, performance evaluation and choice of position of the base station in wireless communication. It is the most accurate way to design a base station through practical measurements, but it costs much time, money and engineers. So, we developed 424 MHz short range wave propagation model for AMR service.

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A Study on the Improvement of the Response Characteristic of the Electro-Hydraulic Rear Wheel Steering Gear (전자 유압식 후륜 조향 장치의 응답 특성 개선에 관한 연구)

  • 오인호;양경욱;이일영
    • Transactions of the Korean Society of Automotive Engineers
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    • v.5 no.6
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    • pp.192-201
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    • 1997
  • The feedback control scheme of the pressure control system of the rear wheel steering gear which has relatively large volume and sprung load was built up in order to improve th response characteristic of the system. The control algorithm chosen was a feedback compensator joined by a feedfoward compensator and the model matching method was used in the process of control system design. The structures and properties of the reference models were inspected and the parameters of the controller were decided. The improvement of the response characteristic of the pressure control valve by means of the feedback control is affirmed. Particularly, when the order of the system model is higher than the 2nd order, the effectiveness of the feedback control on the improvement of the response characteristic of the valve is distinct. And the convenience of the model matching method is the process of control system design is confirmed as well.

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A Study on the Characteristic of Furniture Design of John Pawson (존 파우슨(John Pawson)의 가구 디자인 특성 연구)

  • Kim, Na-Eun;Park, Chong-Ku;Lee, Jung-Wook
    • Korean Institute of Interior Design Journal
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    • v.23 no.3
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    • pp.56-63
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    • 2014
  • Furniture has been developed in pursuit of human convenience and comfort, but nowadays it does not consider human users and gradually loses the essence of furniture. Especially furniture design that disregards the relation with space loses both the meaning and purpose of furniture. In this regards, it is necessary to understand the essence of furniture design and establish a design direction for future progress. Based on the relation between furniture and space, this paper intended to study on John Pawson's works that pursued the essence of design focusing on users, and propose a direction in a sense of real meaning for modern furniture design after exploring the characteristic of the furniture design of John Pawson. The study method of this paper was to investigate the design language of John Pawson and analyze his furniture in the morphological structural, functional, and material aspects. Based on such analysis, this study investigated the characteristics of the furniture design and found out what the core of the design that he pursued was. The scope of the study included the Independent Furniture that was restricted furniture collections of Driade and Spatial Furniture designed and installed at the stage of space construction. The study result showed that the design of John Pawson considered 'the suitability to a specific place' as important factor and furniture was planned at the stage of planning space. Each independent furniture defines all spaces in the morphological, lay-out and functional aspects of furniture and emphasizes their own property. As Spatial Furniture shares the function of spatial composition element, Pawson's furniture can be all called Spatial Furniture.

Analysis on wind condition characteristics for an offshore structure design (해상풍력 구조물 설계를 위한 풍황 특성분석)

  • Seo, Hyun-Soo;Kyong, Nam-Ho;Vaas, Franz;Kim, Hyun-Goo
    • 한국신재생에너지학회:학술대회논문집
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    • pp.262-267
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    • 2008
  • The long-term wind data are reconstructed from the short-term meteorological data to design the 4 MW offshore wind park which will be constructed at Woljeong-ri, Jeju island, Korea. Using two MCP (Measure-Correlate-Predict) models, the relative deviation of wind speed and direction from two neighboring reference weather stations can be regressed at each azimuth sector. The validation of the present method is checked about linear and matrix MCP models for the sets of measured data, and the characteristic wind turbulence is estimated from the ninety-percent percentile of standard deviation in the probability distribution. Using the Gumbel's model, the extreme wind speed of fifty-year return period is predicted by the reconstructed long-term data. The predicted results of this analysis concerning turbulence intensity and extreme wind speed are used for the calculation of fatigue life and extreme load in the design procedure of wind turbine structures at offshore wind farms.

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PI Controller Design of the Refrigeration System Based on Dynamic Characteristic of the Second Order Model

  • Jung, Young-Mi;Jeong, Seok-Kwon;Yang, Joo-Ho
    • Journal of Power System Engineering
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    • v.18 no.6
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    • pp.200-206
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    • 2014
  • This paper deals with deterministic PI controller design based on dynamic characteristics for refrigeration system. The temperature control system of an oil cooler is described as a typical 2nd order model of the refrigeration system which has zeros in a transfer function. PI controller gains satisfying control specifications are represented by the dynamic characteristic functions using relationship between the parameters and the control specifications in the model. Phase margin was considered to increase robustness of the oil cooler control system. Furthermore, the influence of zeros in the model to the control specifications was analyzed in detail for improving control performance. The validity of the suggested PI controller design was investigated using the four types of gains which had been already confirmed their control performances through experiments.

Design and Characteristic Analysis of Wound Rotor Synchronous Motor for ISG according to Field Current Combination (계자전류 조합에 따른 ISG용 권선형 동기전동기의 설계 및 특성분석)

  • Kwon, Sung-Jun;Lee, Dongsu;Jung, Sang-Yong
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.62 no.9
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    • pp.1228-1233
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    • 2013
  • In this paper, design of Wound Rotor Synchronous Motor(WRSM) for Integrated Starter and Generator(ISG) is performed based on Finite Element Analysis(FEA). WRSM can control not only magnitude and phase of armature current, but also field current. Thus, various control methods can be considered. Since driving characteristic of WRSM depends greatly on the control method, characteristic analysis accoding to possible driving current combination is reguired. Especially in high speed region, the control method that reduces unnecessary d-axis current by reducing field current is possible, which is similar to field weakening control. By the current combination reducing field and d-axis current, the design minimizing copper loss to increase efficiency on identical driving point is possible. In this paper, high efficient WRSM is designed applying the current combination which can minimize copper loss on each driving point.