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고추력용 철심형 영구자석 선형동기전동기의 운전조건을 고려한 설계
정상용,Jung, Sang-Yong 한국조명전기설비학회 2007 조명·전기설비학회논문지 Vol.21 No.6
본 논문에서는 철심형 영구자석 선형동기전동기(PMLSM, Steel-Cored Permanent Magnet Linear Synchronous Motor)에서 운전 특성을 고려한 설계 특성 및 전략 등에 대한 내용을 다룬다. 특히 반송장치의 운송궤적에서 요구하는 동적특성과 전동기의 동적용량(Dynamic Capability)을 고려한 동적제약조건(Dynamic Constraints) 규정을 통하여, 짧은 변위의 급가감속 왕복운전을 위한 철심형 PMLSM의 최적설계 전략을 살펴본다. 이와 더불어 동특성이 두드러진 PMLSM의 설계특성으로 열적인 특성, 디텐트력 해석 및 저감, 그리고 자계의 포화특성에 대하여 추가 고찰한다. This paper presents the design characteristics and strategies applied for steel-cored PMLSM(Permanent Magnet Linear Synchronous Motor) considering the running conditions. Particularly, optimal design consideration on steel-cored PMLSM for short reciprocating trajectory using dynamic capability and dynamic constraints has been performed. Furthermore, thermal aspects, detent force, and magnetic saturation in design of steel-cored PMLSM have been investigated.
슬롯수와 극수비의 조합에 의한 영구자석 동기모터의 특성 비교
정상용 ( Sang Yong Jung ),김용재 ( Yong Jae Kim ),조금배 ( Geum Bae Cho ) 조선대학교 공학기술연구원 2010 공학기술논문지 Vol.3 No.3
Permanent Magnet Type Synchronous Motors (PMSMs) can realize the high-efficient drive which spreads the application field. Recently, not only steady-state characteristic but also improvement in transient characteristic are required. Especially, the reduction of the torque ripple its indispensable to the smooth rotation. The cogging torque becomes the representative factor, and its minimization is required. By the difference between the slot combination, the behavior of the cogging torque was examined. The result showed that the slot combination in which the cogging torque becomes a minimum existed.
들기 작업할 때 자세의 변화에 따른 악력과 지면 반발력의 상관관계
정상용(Sang Yong Jung),강진우(Jin Woo Gang),구정완(Jung Wan Koo) 대한인간공학회 2009 大韓人間工學會誌 Vol.28 No.3
The purpose of this study, during the lifting task was researching the difference and a relationship between the ground reaction force and the grip strength by change of position. After grip strength has measured in symmetry position and asymmetry position at 45cm and 75cm of height of hand, ground reaction force was measured by same attitude lifting wooden box. We analyzed the difference of grip strength and ground reaction force in each position change. The results of grip strength, the grip strength of both hand were significant difference that in study subject symmetry and asymmetry position (p<0.01). The results of symmetry lifting task, the study subjects was significant difference of the ground reaction force difference by height (p<0.05). Asymmetry lifting task was significant difference of ground reaction force difference by direction of rotation was changed (p<0.01). The result of it will rotate with non-dominant hand side of lifting tasks from height 75cm where it easily maintains a balance possibility and decreasing the load of the hand. Therefore, from the workshop in the work people, it will be between the height 75cm and non-dominant hand side of trunk rotatory direction in the lifting tasks. Future study is necessary researched about the change of grip strength when the height of the hand is higher, and the difference of the ground reaction force when the change of weight.
정상용(Jung, Sang-Yong) 한국산업비즈니스학회 2018 한국비즈니스연구 (비즈니스연구) Vol.2 No.2
본 연구는 검사기관의 환경을 고려하여 적정검사건수를 산출 순응도를 높이기 위하여 검사건수산정 가이드를 제시하는 것을 목적으로 원가요인을 활용한 적정검사건수 산정 모형개발에 목적이 있다. 시험·검사시간의 수행능력을 고려하여 적정검사건수 산정에 반영할 수 있는 여라가지 변수를 활용한 적정검사건수 산출 방법론을 설정하고 모형화 하였다. 기 신고 된 각 시험·검사기관의 시험·검사 수행건수를 종속변수로 활용하였으며 각 분야별 모형의 설명력은 90%이상으로 높게 산출되었다. The purpose of the paper is to develop a guide to increase the report on proper inspection. The factors used in the guide are related to cost. A model for calculating the proper number of inspections was developed considering the capability of the testing agency. The data of the testing agency are utilized and the accuracy of the models by area is more than 90%.