3篇
您的检索式：作者名="Yiqiao Dong"
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| 1 | A New Fiber Detection Method for LAMOST Based on the Front-illuminated Method显示文摘The double revolving fiber positioning technology is one of the key technologies for the success of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST).The accuracy of fiber positioning will directly affect the observation efficiency of LAMOST.To achieve higher fiber positioning accuracy,the original open-loop controlled fiber positioning system urgently needs to be upgraded into a closed-loop control system.The fiber detection is the most important part of the closed-loop controlled fiber positioning system.The back-illuminated detection method is usually used to detect the fiber position by directly detecting the light spot generated at the fiber end in the multi-fiber spectral surveys.In this paper,we introduce a new method to measure the fiber position based on the image of the front-illuminated LAMOST focal plane.The front-illuminated image does not require lighting devices inside the spectrograph,and it could reduce the instability and light pollution in the spectrograph end.Our method measures the fiber position by fitting the profile of the fiber pinhole with a 2D Gaussian function.A series of tests show that the relative position measurement precision of the front-illuminated method is about 012,and the method could have the same accuracy as the back-illuminated method once the system bias is calibrated by a simple radial correction function.The required fiber positioning accuracy of LAMOST is 04,and the new method satisfies the requirement of LAMOST fiber detection accuracy and could be used in the closed-loop fiber control system. | Ming Zhou Yong Zhang Guanru Lv Jian Li Zengxiang Zhou Zhigang Liu Jianping Wang Zhongrui Bai Yuan Tian Mengxin Wang Shuqing Wang Hongzhuan Hu Chao Zhai Jiaru Chu Zhijie Han Mingxu Liu Yiqiao Dong Hailong Yuan Yongheng Zhao Yaoquan Chu Haotong Zhang | 2022 | Research in Astronomy and Astrophysics2022，22，6： | 0 |
| 2 | Towards intelligent and integrated architecture for hydrogen fuel cell system: challenges and approaches显示文摘The hydrogen fuel cell is rapidly attracting research interest for its potential in power generation and electrified transportation.The fuel cell stack(FCS)is a complex system comprising multiple coupled subsystems,and in order to maximize the utilization of an FCS,the system-level design and control can be optimized through modeling,data-based analytics and monitoring.To this end,a systematic overview of the system architecture and control of hydrogen fuel cells is provided in this review,with focus on integration and intelligence.Firstly,the fuel cell subsystems,namely the cathode,anode and cooling loops are reviewed,where their respective control methods and impact on FCS performance are discussed.DC/DC converters are another core component of FCS,and we present an overview of fuel cell DC/DC converter topologies and integrated control of DC/DC converter and air compressor.Finally,the system-level integration of fuel cells in power systems is surveyed.In the conclusions,we discuss the challenges and perspectives concerning the integrated architecture and intelligent control for FCS,including cohesive dynamic models,data-based approaches,and integrated hardware architecture. | Xiaoyu Guo Zhen Dong Jiabin Shen Yiqiao Xu Qiaohui He Xiaowei Zhao Zhengtao Ding | 2023 | National Science Open2023，2，4： | 0 |
| 3 | Safety and efficacy of bimatoprost/timolol fixed combination in Chinese patients with open-angle glaucoma or ocular hypertension显示文摘 | Ling Zhihong Zhang Mingchang Hu Yizhen Yin Zhengqin Xing Yiqiao Fang Aiwu Ye Jian Chen Xiaoming Liu Dachuan Wang Yusheng Sun Wei Dong Yangceng Sun Xinghuai | 2014 | Chinese Medical Journal2014，，5： | 0 |
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