http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
하이브리드 자동차용 IPMSM에 적용할 위치센서리스 제어기법 비교
박상준(Sang-Zoon Park),이용균(Yong-Kyun Lee),이주석(Ju-Suk Lee),목형수(Hyung-Soo Mok) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.11
This paper results from the application of IPM for hybrid vehicles using Matsui method and Extended EMF mothed. These 2 methods are typical methods based on EMF, which is usually used in position sensorless control. When d-axle current was 0, both Matsui method and Extended EMF method showed desirable results. On the other hand, when d-axle current was not 0, only Extended EMF appeared satisfactory. This means that Matsui method is more vulnerable to parameter variation. Thus, Extended EMF method would be better than Matsui method to be used in field weaking or MTPA control.
도로유지비용을 고려한 사회적 후생에 관한 연구 : 천안$\sim$논산 구간을 중심으로
김웅이,박상준,강경우,Kim, Woong-Yi,Park, Sang-Zoon,Kang, Kyung-Woo 한국ITS학회 2008 한국ITS학회논문지 Vol.7 No.5
본 연구는 외부비용의 한 항목인 유지비용을 내부화하여 이에 따른 사회적 후생의 변화에 대한 연구이다. 연구대상으로는 민자 고속도로, 고속국도, 그리고 일반국도 등, 도로여건과 통행요금이 다른 3가지 노선이 경쟁하고 있는 천안$\sim$논산간 노선을 선정하였다. 유료도로의 수요함수는 회귀분석을 통해 도출하였다. 최선 가격설정법의 현실적용 어려움을 고려하여 유지비용을 통행요금에 재반영하는 방법으로 차선 가격설정법을 적용하였다. 유지비용을 통행요금에 반영함으로써, 노선별 통행량 변화에 따른 사회적 후생뿐만 아니라, 통행수입금의 변화 측면도 함께 연구하였다. 분석결과, 차선 가격설정법을 적용함에 따라 사회적 후생의 변화는 작은 차이를 보였으나, 재정적인 측면에서는 고속국도에 유지비용을 반영하였을 경우 연간 약 130억 원의 재정적인 효과가 있어 국가 재정 지원 감소에 기여할 것으로 분석되었다. The aim of this paper is to research the changes of social welfare by internalizing external cost, especially the maintenance cost. Main target of this paper is the Cheonan$\sim$Nonsan Line, where private capital highway, national highway and local road are competing against each other. Considering the realistic difficulties in applying the First Best pricing, this paper applied the Second Best pricing, applying the maintenance cost, in lieu of the already mentioned. The demand functions of the toll roads were built through regression analysis. By reflecting the maintenance cost to the toll fee, It was able to confirm the variation of social welfare deriving from the traffic assign change but also the aspects of toll revenue at the same time. Result of applying the Second Best pricing shows merely a small change in social welfare. However, in the aspect of finance, it is analyzed that there will be about 13 billion won worth of financial effectiveness which will contribute to the reduction of the national financial support.
이중 공진을 고려한 소나 트랜스듀서의 전기적 등가회로 모델링 및 임피던스 변동에 따른 효과 분석
목형수(Hyung-Soo Mok),최재혁(Jae-Hyuk Choi),한수희(Soo-Hee Han),박상준(Sang-Zoon Park),김성주(Sung-Joo Kim),허준기(Jun-Ki Heo) 전력전자학회 2015 전력전자학회 논문지 Vol.20 No.2
The present study proposes a method for modeling a SONAR transducer with dual resonance. The Butterworth van-Dyke (BVD) model, a conventional SONAR transducer modeling method, can model only one resonance point. Hence, to address its disadvantage and to model the dual resonance, a dual resonance BVD model consisting of two serial BVD models is proposed. The two BVD models are connected in a series, and each simulate resonance at low frequency and high frequency, which allows the modeling of two resonance points. Eight elements compose the equivalent circuit by connecting the BVD models in a series, which is twice as great as that of the existing BVD model. The element value of the dual resonance BVD model is extracted by using the particle swarm optimization method. Analysis was also performed to identify the effects of changes in the value of elements that compose the equivalent circuit on the impedance characteristics of the equivalent circuit through simulation in which element values varied.