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국제동향 - Current Status of Usage and Production of Pallet in China
Tang, Ying 한국파렛트컨테이너협회 2013 파렛트 뉴스 Vol.71 No.-
본 원고는 지난 2013년 7월 18일 일본 'Mielparque Tokoy'에서 열린 APSF 정기총회 발표 원고로 중국의 물류구매연합회 파렛트 분과위원회 비서장 및 APSF 사무부국장인 Ying Tang이 발표하였습니다.
Sensorless Estimation of Single-Phase Hybrid SRM using Back-EMF
Ying Tang,Yingjie He,Dong-Hee Lee,Jin-Woo Ahn 대한전기학회 2017 Journal of Electrical Engineering & Technology Vol.12 No.1
This paper presents a novel scheme to estimate the rotor position of a single-phase hybrid switched reluctance motor (HSRM). The back-EMF generated by the permanent magnet (PM) field whose performance is motor parameter independent is adopted as an index to achieve the sensorless control. The differential value of back-EMF is calculated by hardware and processed by DSP to capture a fixed rotor position four times for every mechanical cycle. In addition, to accomplish the normal starting of HSRM, the determination method of the turn-off time position at the first electrical cycle is also proposed. In this way, a sensorless operation scheme with adjustable turn on/off angle can be achieved without substantial computation. The experimental verification using a prototype drive system is provided to demonstrate the viability of the proposed position estimation scheme.
Sensorless Estimation of Single-Phase Hybrid SRM using Back-EMF
Tang, Ying,He, Yingjie,Lee, Dong-Hee,Ahn, Jin-Woo The Korean Institute of Electrical Engineers 2017 Journal of Electrical Engineering & Technology Vol.12 No.1
This paper presents a novel scheme to estimate the rotor position of a single-phase hybrid switched reluctance motor (HSRM). The back-EMF generated by the permanent magnet (PM) field whose performance is motor parameter independent is adopted as an index to achieve the sensorless control. The differential value of back-EMF is calculated by hardware and processed by DSP to capture a fixed rotor position four times for every mechanical cycle. In addition, to accomplish the normal starting of HSRM, the determination method of the turn-off time position at the first electrical cycle is also proposed. In this way, a sensorless operation scheme with adjustable turn on/off angle can be achieved without substantial computation. The experimental verification using a prototype drive system is provided to demonstrate the viability of the proposed position estimation scheme.
Ying Tang,Shuyan Yang,Wendan He,Lei Liu,Zhongfei Zhang 한국섬유공학회 2020 Fibers and polymers Vol.21 No.6
Chinese gallnut (Galla chinensis) is rich in hydrolyzable tannins, which, when mordanted with ferrous ions,produces intense black color on keratinous fiber and makes it a desirable natural hair dye in Asian countries. However,extracted tannins from Chinese gallnut are susceptible to chemical degradation by physicochemical factors (heat, UV, andhigh pH) that limited the utilization and commercialization of this plant colorant in color cosmetics. Hence, this study wasaimed to improve the storage and application stability of Chinese gallnut extract by spray-drying microencapsulation. Different combinations of maltodextrin (MD) and gum arabic (GA) were used as encapsulating agents and the effects on theencapsulation efficiency, morphology, physicochemical properties, in vitro toxicity, and stability were investigated. Theresults showed that an increase of MD proportions in the wall matrix resulted in the production of more spherical shapedparticles with larger size, decreased bulk density, and improved solubility in water. Furthermore, microcapsules covered withMD alone showed the maximum stability with respect to heat, UV, and formulation at alkaline pH. When applied for dyeingof human gray hairs, intense black color could be achieved by using the MD-covered microcapsule formulations and thedyeings are stable to multiple washings and simulated sunlight. Therefore, this study examines a promising strategy forstabilizing tannin-rich extract from Chinese gallnut while maintaining its dyeing efficiency, which will in turn promote itsutilization in hair coloring cosmetics.