• Title/Summary/Keyword: 자기해석

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Influence of Vector Magnetic Property of Electrical Steel Sheet on Magnetic Field Analysis of Electrical Machine (전기기기의 자계 해석에 대한 전기강판의 벡터 자기특성의 영향)

  • Yoon, Hee-Sung;Koh, Chang-Seop
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.852-853
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    • 2011
  • 통상적으로 전기기기에 사용되는 전기강판의 자기특성은 B-H 자기특성 곡선을 이용하여 표현되어졌고, 이를 이용하여 전기기기의 자계 분포 해석 및 특성 해석이 이루어져 왔다. 그러나 실제로 전기기기의 전기강판은 인가 자계의 방향에 따라 자기특성이 다르게 나타나고, 자속밀도와 자계세기의 방향이 다르게 나타나는 벡터 자기특성을 가지기 때문에, B-H 곡선과 같은 스칼라 자기 특성으로 전기강판의 자기 특성을 정확히 표현하는 것이 불가능하다. 따라서 전기기기의 정확한 자계 해석 및 특성 해석을 위해서는 전기강판의 벡터 자기특성이 반드시 고려되어야 한다. 본 논문에서는 전기강판의 벡터 자기특성이 전기기기의 자계 분포 해석에 미치는 영향을 알아보고자 하며, 전기강판의 벡터 자기특성의 고려를 위해 ($B_m,\theta_B$)법을 이용하였으며 간단한 형태의 단상 변압기 모델에 유한요소 해석을 적용하였다.

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Moving urban Maglev-vehicle analysis considering nonlinear magnetic levitational force effect (전자기력의 비선형 효과를 고려한 도시형 자기부상열차의 주행해석)

  • Lee, Jun-Seok;Yoo, Sung-Hyun;Lim, Dong-Jun;Kim, Moon-Young
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2009.04a
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    • pp.544-547
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    • 2009
  • 본 연구는 자기부상력의 선형 및 비선형효과가 이동중인 자기부상열차의 부상공극에 미치는 영향을 파악하는데 목적이 있다. 이를 위하여 자기공극의 피드백을 포함한 1자유도 차량에 대한 운동방정식을 구성하고, 최적능동제어기법을 적용하여 수치해석을 수행하였다. 해석결과 차량의 속도가 증가함에 따라 자기부상력의 선형 및 비선형효과가 자기부상차량의 부상공극에 미치는 영향에 뚜렷한 차이가 발생함을 알 수 있다. 결국 자기부상열차의 정확한 해석을 위해서는 자기부상력의 비선형효과를 고려한 해석이 필요할 것으로 판단된다.

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The Negative Effect of the Advertising Endorser's Smile and Consumer's Self-construal Level on Purchase Intention of the Brand in the Expensive Product Category (광고모델의 미소와 소비자의 자기해석 수준이 고가 제품군 브랜드의 구매의도에 미치는 부정적 효과)

  • Kim, Taemin
    • The Journal of the Korea Contents Association
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    • v.21 no.6
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    • pp.678-686
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    • 2021
  • A smiling face usually has a positive effect on interpersonal relationships by delivering a warm impression. However, the stereotype content model and compensation effect between warmth and competence suggested that warmth perceptions caused by a smiling face could influence competence perceptions negatively. This study examined the negative impact of the advertising endorser's smile on purchase intention in an expensive product category by adopting the self-construal level. The study results showed that consumers with independent-self construal (vs. interdependent self-construal) showed a lower purchase intention when exposed to an ad containing an endorser's smile. In comparison, consumers with interdependent-self construal (vs. independent self-construal) showed a lower purchase intention when exposed to an ad without an endorser's smile. Thus, this study demonstrated a moderating role of self-construal in the relationship between advertising endorser's smile and purchase intention. These findings provide valuable theoretical and practical implications for effective advertising strategies in the expensive product category.

Complexity of Self-Construal and Psychological Well-Being among People with an Experience of Life-Crisis Due to Physical Disability or Divorce - Taking Multiple Perspectives, Self-Acceptance and Self-Regulation as Mediators - (중도장애, 이혼과 같은 생애위기 경험자의 자기해석 복합성과 심리적 안녕 - 관점의 다각화, 자기수용, 자기조절의 매개효과 -)

  • Hyun, Kyoung-Ja
    • Korean Journal of Social Welfare
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    • v.62 no.4
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    • pp.193-222
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    • 2010
  • This questionnaire study examined the processes linking complexity of self-construal to self-positivity conceptualized as taking multiple perspectives, self-acceptance and self-regulation that, in turn, affect psychological well-being among people with an experience of life-crisis during adulthood due to physical disability or divorce. Data were drawn from 359 adult Koreans residing in Seoul metropolitan area, including the physically disabled, the divorced, and their counterparts without a life-crisis experience during adulthood for comparison. On average, the life-crisis experience group(LEG) had a higher independent selfconstrual and a lower interdependent self-construal than the comparison group(CG). As predicted, complexity of self-construal contributed to taking multiple perspectives that helps searching for meaning, and this, in turn, was found to foster self-acceptance and self-regulation. Through these variables except self-regulation, complex self-construal contributed to psychological well-being as manifested by a higher level of positive emotion and a lower level of depression. As expected, while taking multiple perspectives fostered positive emotion both directly and indirectly through self-acceptance among LEG and CG, only in LEG it directly reduced depression. The comparative approach employed in this study enabled to discern that taking multiple perspectives promotes psychological well-being in LEG by contributing to both meaning making and positive attitude, whereas it promotes psychological well-being in CG primarily by fostering positive attitude. Finally implications for this study were discussed and directions for future research were suggested.

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Effects of Online Community Characteristics on Customer Reaction - Based on the Differences of Customer's Gender and Self-Construal Level (온라인 커뮤니티특징이 소비자 반응에 미치는 영향 - 소비자의 성별과 자기해석 수준차이를 중심으로)

  • Shin, Jong-Kuk;Moon, MinKyung;Kim, JaeHun
    • Journal of Digital Convergence
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    • v.16 no.3
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    • pp.261-273
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    • 2018
  • The purpose of this study is to find out how the online brand community characteristics affect customer behavior according to self-construal level and gender difference. The characteristics of online community are divided into interaction, objectivity, information provision, and activity reward. First, interactivity and activity compensation among the characteristics of online community have a positive effect on brand community commitment. On the other hand, the effect of purpose and information provision is insufficient. Second, the greater the commitment to the brand community, the higher the WOM effect is. Finally, this study shows that customers with dependent self-construal tendencies have more brand community support than customers with independent self-construal tendencies, and females show more brand community support than males. This study suggests an efficient marketing approach to companies through a brand community commitment by understanding the intrinsic motivation of consumers' self-construal level.

KOMPSAT-2 전장품의 Magentic Moment 해석

  • Lee, Na-Yeong;Lee, Jin-Ho;Lee, Sang-Ryul;Lee, Ju-Jin
    • Aerospace Engineering and Technology
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    • v.4 no.2
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    • pp.101-106
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    • 2005
  • KOMPSAT-2 위성에서 사용되는 TAM의 정상적인 작동을 위해 각 유닛에서 생성되는 자기장(magnetic field) 값은 일정한 양 이하가 되도록 관리되고 있다. 자기장은 그 특성상 전장품 간의 거리에 반비례하며 전장품의 자기 모멘트에 비례하므로 위성체 유닛의 자기장 값을 관리하기 위해 우선 유닛의 magnetic moment 값을 구해야한다. KOMPSAT-2의 각 전장품들의 자기 모멘트 값은 기존 KOMPSAT-1의 값을 근거로 설정되었다. 이것은 KOMPSAT-2가 KOMPSAT-1의 heritage를 따라 설계되었으며 각 전장품 역시 KOMPSAT-1 전장품 설계를 대부분 따르고 있기 때문이다. 그리고 최근 EMC 해석 S/W중 magnetic moment를 전문적으로 해석해주는 tool이 출시되었다. 이 tool은 해석하고자 하는 유닛의 geometric 정보와 전류 패스를 설정하면 자기 모멘트 값을 구할 수 있는 수식을 풀어내 그 값을 알려준다. 본 논문에서는 magnetic moment 값을 구할 수 있는 수식이 이 tool에 어떻게 구현되었는지 살펴보고 실제 KOMPSAT-2의 전장품의 자기 모멘트 해석 결과를 보여준다.

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Analysis and Improvement for Single 6/6 SRM with a Saturable Area (자기 포화 영역을 갖는 단상 6/6 SRM의 자기 구조 해석 및 개선)

  • Oh, Seok-Gyu
    • Journal of the Korean Magnetics Society
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    • v.27 no.2
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    • pp.70-75
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    • 2017
  • Single-phase SRM is cost competitive because it can reduce the number of switches for small, low-cost applications. However, since the single-phase SRM is difficult to start itself, methods for realizing self-starting by using auxiliary magnet or auxiliary pole have been studied. Recently, a method of self-starting by changing the shape of the rotor with a saturable area has been proposed. The purpose of this paper is to analyze the magnetic structure of single phase 6/6 SRM with a saturable rotor and to improve the magnetic structure of rotor with a saturable area. For this magnetic analysis, FLUX2D, a finite element method analysis program, was used.

Examining Factors Influencing the Intention to Use Mobile Payment: Focusing on Self-Construal (모바일 간편결제 이용의도에 미치는 영향요인에 관한 연구: 자기해석의 조절적 역할을 중심으로)

  • Lee, Jang-Suk;Sung, Dong-Kyu
    • Journal of Digital Convergence
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    • v.16 no.4
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    • pp.137-147
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    • 2018
  • The purpose of this study was to examine the influence of variables of TAM, user characteristics variables, and perceived risk variables on the intention to use mobile payment. Through the combination of characteristics of mobile payment, this study also investigated the effect of various independent variables on the intention to use mobile payment including the moderating effect of self-construal. To verify hypotheses of this study, the hierarchical regression analysis based on responses from 188 undergraduate and graduate students was conducted. The significant findings of this study were as follows: TAM variables, user characteristics variables and perceived risk variables had positive influence on the intention to use mobile payment. Self-construal was found to moderate the effect of the perceived usefulness, perceived ease of use and subjective norm. This study may provide important implications for both academicians and practitioners.

Effect of Recording Density On the Reproducin Voltage in Perpendicular Magnetic Recording System (수직자기 기록장치에서 기록밀도가 재생전압에 미치는 영향)

  • 박관수;이향범;한송엽;이택동;징평우
    • Journal of the Korean Magnetics Society
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    • v.1 no.2
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    • pp.74-78
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    • 1991
  • The method for analyzing the recording and reading process of magnetic recording system by numerical simulation is introduced. which can simulate the effect of elements of the magnetic recording system. During the whole simulation, hysteresis characteristics must be included. Preisach model and finite element method are used to construct the algorithm. From the wave of recording current, recorded pattern of magnetization in recording media is simulated in recording process, and then waveform of reading signal in head coil is obtained in reading process. To show the validity of this method, this is applied to perpendicular magnetic recording system. Waveform of recording signal and reproduced signal is obtained in several density. Pattern of reprocuced voltage magnitude according to increase of recording density shows roll-off curve.

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Magnetic Shielding Study using 3-D Field Analysis (3차원 자기장해석을 이용한 자기차폐 연구)

  • Kim, Chan-Uk;Lee, Dong-Chang
    • Korean Journal of Materials Research
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    • v.9 no.3
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    • pp.251-256
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    • 1999
  • 대전력을 사용하는 제강공장의 L/F설비에서 발생되는 강자계를 효율적으로 차폐하기 위하여 L/F주위의 자기장 분포를 유한해석법을 이용한 사용해석도구인 ANSYS 5.3 3차원 자기장해석기를 통해 해석하고 그 결과를 평판형태의 차폐체에 적용시키고자 하였다. 분석결과, L1 및 L2가 각각 2.7 및 2.9m 이려 높이가 3.5m인 2중차폐체(1차측 차폐: 1mmt의 전기강판, 2차측차폐: 1mmt의 Fe-Ni alloy sheet)를 설치하는 거싱 최적의 처폐방안으로 도출되었다.

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