• 제목/요약/키워드: Sung Bong Park

검색결과 1,097건 처리시간 0.046초

Substituent Effect on Diastereoselectivity in Photochemistry of Valerophenone

  • Park, Bong-Ser;Cho, Sung-Su;Chong, Sang-Hyuk
    • Bulletin of the Korean Chemical Society
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    • 제28권7호
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    • pp.1156-1158
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    • 2007
  • Valerophenone shows a dramatic shift of photoreactivity by a cyclopropyl group at alpha position to the carbonyl group. By the minor change of structure, the diastereoselectivity of the Yang photocyclization is reversed and the ratio of cyclization to elimination products increases significantly.

철도차량을 위한 선형유도전동기의 설계 (Design of Linear Induction Motet (LIM) for Transit Applications)

  • 박도영;김봉섭;김동성;남용윤
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2006년도 추계학술대회 특별세미나 특별세션
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    • pp.181-188
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    • 2006
  • Outline of design procedures of Linear Induction Motor (LIM) for transit vehicle applications are presented. The design steps are based on the classical design method. Constrains specific for transit applications are discussed. Heuristic data obtained from the various LIMs are utilized to streamline the presented design steps.

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세그웨이를 위한 낮은 복잡도를 갖는 제어기의 설계 (A low-complexity controller design for Segway)

  • 김병우;황성조;박봉석
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2015년도 제46회 하계학술대회
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    • pp.1339-1340
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    • 2015
  • In this paper, we propose a low-complexity control scheme for segway. To design the controller, we use the prescribed performance function and analyze the stability of the proposed control system using the Lyapunov stability theorem. By prescribed performance function, we can adjust the transient and steady-state response. Finally, the simulation results are provided to illustrate the effectiveness of the proposed scheme.

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