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	Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation 期刊论文 OAI收割 Iet Microwaves Antennas & Propagation, 2020, 卷号: 14, 期号: 13, 页码: 1635-1642 作者: Lian, Peiyuan; Wang, Congsi; Xu, Qian; Xiang, Binbin; Shi, Yu \| 收藏 \| 浏览/下载：49/0 \| 提交时间：2021/06/25 radiotelescopes temperature sensors reflector antennas solar radiation temperature database table look-up method temperature field estimation speed real-time estimated temperature field temperature sensors real-time compensation axisymmetric telescopes time temperature estimation method electromagnetic performance improvement axisymmetric radio telescope solar radiation electromagnetic performances EM performance improvements temperature simulation fast estimation method transient temperature field simulation high-frequency radio telescopes large-aperture radio telescopes reflector antenna reflector antennas surface error adjustment pattern field Engineering Telecommunications
	Flow rate analysis of compressible superheated steam through pressure reducing valves 期刊论文 OAI收割 ENERGY, 2017, 卷号: 135, 页码: 650-658 作者: Qian, Jin-yuan; Wei, Lin; Zhang, Ming; Chen, Fu-qiang; Chen, Li-long \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2017/12/31 Compressible Superheated Steam Pressure Reducing Valve Flow Rate Adjustment Performance Computational Fluid Dynamics (Cfd)
	A design on a control method of a new type of focal plane shutter (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Xue L.; Ming L.; Zheng L.-N.; Zhou J.-F.; Zhang H.-W.; Zhang J.-C. 收藏 \| 浏览/下载：37/0 \| 提交时间：2013/03/25 In order to ensure appropriate exposure time and no exposure while electric charge is transferring after taking a photograph it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle structural design and control procedure about this new focal plane shutter. Under the control of DSP the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement long life span with more than 105 operating times a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width)and the exposure error is less than 10%. With the CCD gain adjustment the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras. 2010 IEEE.