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Lianhai Shan,Weidong Fang,Yunzhou Qiu,Wei He,Yanzan Sun 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.9
With the continued requirement of internet of things (IoT) development, many researchers focused on developing access and routing algorithms optimization of wireless sensor networks (WSNs) for communications quality guarantee, but less research has focused on the optimization of WSNs based on the mobile cellular networks (MCNs) assist. In this paper, we propose a convergence architecture of WSN and MCN for IoT applications, especially on the smart user equipment (UE) acting as a mobile gateway for WSN data transmission. And then, we investigate system application requirement for IoT. Finally, we discuss the key technical challenges and research points based on an analysis of smart gateway.
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Development Issues of An ISG PM Machine and Control System
Xiaojiang Chen,Murray Edington,Roger Thornton,Yunzhou Fang,Qingfeng Peng 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-
This paper focuses on addressing some practical considerations in developing an ISG PM system for hybrid electric-vehicle (HEV) applications. Extensive practical test results and theoretical analyses are presented and analyzed. Firstly, the ISG PM machine design is discussed in term of the machine size, pole-pair number, permanent magnet flux, inductance, etc. A cost-effective machine design example, which was successfully demonstrated in a mild ISG HEV application, is analyzed. Its performance test results are evaluated. Subsequently, the impacts of the position sensors on the ISG performance are investigated exclusively. Three prominent position sensor candidates are studied in detail to examine their limitation and feasibility for ISG applications. Furthermore, the control related issues are discussed. The torque control of the ISG machine is implemented through vector control algorithm. Flux-weakening control is employed to achieve a wide speed range of constant-power operation. The impact of the inverter DC-link voltage variation is explored. In addition the digital control delay influence and its effective compensation strategy are addressed.
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