http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Mingshan Chi (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Chang, Jiaqing,Chi, Mingshan,Shen, Teng The Korean Institute of Power Electronics 2020 JOURNAL OF POWER ELECTRONICS Vol.20 No.2
Lithium-ion batteries have been treated as the most efficient energy storage candidates in electric vehicles. However, range anxiety hinders its popularity in daily transportation. When compared with the extensively discussed state-of-charge, state-of-energy (SoE) is a more appropriate indicator of remaining driving mileage by considering the voltage degradation in the discharging process. In this paper, an equivalent circuit model (ECM) based SoE estimator is proposed where a pseudo power definition is utilized to exclude the internal loss influence, and an unscented particle filter is employed to address system nonlinearities and noises. Additionally, to accommodate battery time-variant characteristics, the ECM parameters and variables are decoupled in complex-frequency domain, upon which the recursive least square algorithm is utilized for the on-line identification of parameters. Finally, a series of validation experiments on a LiFePO<sub>4</sub> battery verify that the proposed methodology can track the real SoE closely with an error of less than 1.8%.
-
Research on Data Heterogeneity in Enterprise Information Integration
Ruizhen Duan,Zhongwen Wang,Mingshan Chi,Xiaoqiu Xu 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.3
In view of the problem of data heterogeneity in enterprise application integration, we proposed a solution, which is based on XML, WSDL and Web Service technology to achieve the elimination of data heterogeneity, which can reduce the complexity of the system, and has certain significance for the information communication between enterprises and enterprises.
-
Experimental study of welding effect on grade S690Q high strength steel butt joint
Cheng Chen,Sing-Ping Chiew,Mingshan Zhao,Chi King Lee,Tat Ching Fung 국제구조공학회 2021 Steel and Composite Structures, An International J Vol.39 No.4
This study experimentally reveals the influence of welding on grade S690Q high strength steel (HSS) butt joints from both micro and macro levels. Total eight butt joints, taking plate thickness and welding heat input as principal factors, were welded by shielded metal arc welding. In micro level, the microstructure transformations of the coarse grain heat affected zone (CGHAZ), the fine grain heat affected zone (FGHAZ) and the tempering zone occurred during welding were observed under light optical microscopy, and the corresponding mechanical performance of those areas were explored by micro-hardness tests. In macro level, standard tensile tests were conducted to investigate the impacts of welding on tensile behaviour of S690Q HSS butt joints. The test results showed that the main microstructure of S690Q HSS before welding was tempered martensite. After welding, the original microstructure was transformed to granular bainite in the CGHAZ, and to ferrite and cementite in the FGHAZ. For the tempering zone, some temper martensite decomposed to ferrite. The performed micro-hardness tests revealed that an obvious “soft layer” occurred in HAZ, and the HAZ size increased as the heat input increased. However, under the same level of heat input, the HAZ size decreased as the plate thickness increased. Subsequent coupon tensile tests found that all joints eventually failed within the HAZ with reduced tensile strength when compared with the base material. Similar to the size of the HAZ, the reduction of tensile strength increased as the welding heat input increased but decreased as the thickness of the plate increased.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
