• Title/Summary/Keyword: design of Moo

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Standardization of Pattern Design of Korean Traditional Women's Durumgi (한복 여자두루마기 원형설계의 표준화를 위한 연구)

  • Jung, Ok-Im
    • Journal of the Korean Home Economics Association
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    • v.45 no.3
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    • pp.11-21
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    • 2007

  • So far, the graphics of Korean clothing have focused on maintenance of forms without specific improvement. In particular, in the archetypal design of a Jeogori, ambiguous standards on the overlapping of left and right collars and collar strips cause problems in the teaching and teaming of Korean traditional clothing. As a result, the graphics of men's Durumagis based on a Korean Jeogori have the same problems as Jeogoris and the connection between them has not been sufficiently studied. Design of "Moo" in respect to graphics of men's Durumagis has its own calculation equation or measures, but they can not be generalized. This study therefore considers the existing graphics of men's Durumagis or approaches of Moo in different angles by reviewing the connection between Durumagis and Jeogoris. Therefore, archetypal forms of Durumagis are designed with a radius of a circle using one's height and the girth of one's chest, which contributes to symmetry of the collars and teaming effects through scientific graphics of "Moo." It is further expected that can be mass-produced through archetypal design of overcoats and graphics of "Moo" of Durumagis that can be standardized as well as connection between graphics of Jeogoris and Jeogoris.

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An Improved Predictive Functional Control with Minimum-Order Observer for Speed Control of Permanent Magnet Synchronous Motor

  • Wang, Shuang;Fu, Junyong;Yang, Ying;Shi, Jian
    • Journal of Electrical Engineering and Technology
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    • v.12 no.1
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    • pp.272-283
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    • 2017

  • In this paper, an improved predictive functional control (PFC) scheme for permanent magnet synchronous motor (PMSM) control system is proposed, on account of the standard PFC method cannot provides a satisfying disturbance rejection performance in the case of strong disturbances. The PFC-based method is first introduced in the control design of speed loop, since the good tracking and robustness properties of the PFC heavily depend on the accuracy of the internal model of the plant. However, in orthodox design of prediction model based control method, disturbances are not considered in the prediction model as well as the control design. A minimum-order observer (MOO) is introduced to estimate the disturbances, which structure is simple and can be realized at a low computational load. This paper adopted the MOO to observe the load torque, and the observations are then fed back into PFC model to rebuild it when considering the influence of perturbation. Therefore, an improved PFC strategy with torque compensation, called the PFC+MOO method, is presented. The validity of the proposed method was tested via simulation and experiments. Excellent results were obtained with respect to the speed trajectory tracking, stability, and disturbance rejection.

  • https://doi.org/10.5370/JEET.2017.12.1.272 인용 PDF KSCI