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Constant exposure control algorithm for laser direct writing of mesh pattern in a deep concave spherical substrate 会议论文
2012
Liang F. C.; Gao J. S.
收藏  |  浏览/下载：12/0  |  提交时间：2013/03/28
The research on adaptive measurement of angular acceleration for photoelectric servo turntable (EI CONFERENCE) 会议论文
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
Liang W.; Guo J.; Chen J.; Feng F.
收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25
The paper proposes a new measurement method of angular acceleration for photoelectric servo turntable. Piezoelectric angular acceleration sensor is used to measure angular acceleration directly  Adaptive FIR filter based on LMS algorithm is established on DSP  by which angular acceleration signal can be filtered and corrected errors adaptively  then angular acceleration signals can be measured adaptively. This method avoids measurement errors and calculation noise by computing angular acceleration indirectly  thus improving measurement precision and making measurement results better than traditional methods. The gotten angular acceleration can be sent to servo control mechanism as feed forward control signals to improve control effects of servo turntable significantly. 2011 IEEE.  
Study of three-mode parametric instability (EI CONFERENCE) 会议论文
8th Edoardo Amaldi Conference on Gravitational Waves, June 21, 2009 - June 26, 2009, New York, NY, United states
Liang F.; Zhao C.; Gras S.; Ju L.; Blair G.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
The effect of parametric instability in advanced interferometric gravitational wave detectors is a potential problem for their proper operation. Great efforts have been made to study the onset of parametric instabilities and to find ways to control them. Here we present an experimental design for studying parametric instability in a 72 m cavity with suspended high quality fused silica mirrors. With 5 W input power and 20 kW circulation power inside the cavity  it is predicted that parametric instability will occur. The resonant condition of parametric instability can be met by thermally tuning the radius of curvature of a test mass. We will present simulation results of parametric gains for different radii of curvature of a test mass. The simulation results will provide the basis for designing the thermal tuning and observation parametric instability experiments. This will provide a test bed for studying parametric instability and its control for next generation detectors. 2010 IOP Publishing Ltd.  
Design of Wide Stop-Band and Narrow Pass-Band Filters 会议论文
2010
Zhu H. X.; Gao J. S.; Feng X. G.; Zhao J. L.; Liang F. C.; Wang Y. S.; Chen X.
收藏  |  浏览/下载：7/0  |  提交时间：2013/03/28
A Novel Element of Frequency Selective Surfaces for Stealth Radome 会议论文
2010
Xu N. X.; Gao J. S.; Wang S. S.; Feng X. G.; Zhao J. L.; Liang F. C.; Wang Y. S.; Chen X.; Zhu H. X.
收藏  |  浏览/下载：11/0  |  提交时间：2013/03/28
Three-dimensional angle measurement based on auto-collimation and moire fringe 会议论文
2009
Cai S.; Liang S. A.; Qiao Y. F.
收藏  |  浏览/下载：10/0  |  提交时间：2013/03/28
Fabrication and testing of hard X-ray hourglass lenses 会议论文
2009
Liang J. Q.; Zhu Y. Q.; Cui N. D.; Liang Z. Z.; Le Z. C.; Yi F. T.; Hou F. J.; Zhu P. P.; Dong W.; Wang W. B.
收藏  |  浏览/下载：10/0  |  提交时间：2013/03/28
Fabrication and testing of hard X-ray hourglass lenses (EI CONFERENCE) 会议论文
Micro and Nano Technology - 1st International Conference Society of Micro/Nano Technology, CSMNT, November 19, 2008 - November 22, 2008, Beijing, China
Liang J.; Zhu Y.; Cui N.; Liang Z.; Le Z.; Yi F.; Hou F.; Zhu P.; Dong W.; Wang W.
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
Manufacturing and testing of the line-array fiber-optic image slicer based on silicon V-grooves - art. no. 683607 会议论文
2008
Liang J. Q.; Guo P.; Liang Z. Z.; Zhu Y. Q.; Hou F. J.; Yao J. S.
收藏  |  浏览/下载：9/0  |  提交时间：2013/03/28
Manufacturing and testing of the line-array fiber-optic image slicer based on silicon V-grooves (EI CONFERENCE) 会议论文
MEMS/MOEMS Technologies and Applications III, November 12, 2007 - November 14, 2007, Beijing, China
Liang J.; Guo P.; Liang Z.; Zhu Y.; Hou F.; Yao J.
收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25
Linear fiber-optic image slicer is used more and more in spatial exploration and imaging system. In this paper  a plane arranging method of fiber-optic array based on Si-V grooves is established in order to improve the accuracy and reduce the cost of manufacturing. Firstly  the Si-V groove array is micro-machined with anisotropic etching process  then optical fibers are placed in the grooves orderly with plane arranging method. Secondly  the end surfaces of the device are polished  also the linear fiber-optic image slicer is packaged. Finally  some parameters are tested  including structure parameters  transmittivity and vibration test. Experimental results indicate that the maximum error accumulated in 2000 periods of the Si-V grooves is 0.5 m  the error of the height in Si-V grooves is less than 0.15m  the roughness of the end surface is less than 0.9nm. The transmittivity of the linear fiber-optic image slicer that without optical film is 51.46% at the wavelength of 632.8nm. After random vibration experiment  the ratio of the broken fiber increased by 0.1%. While the temperature reached 320C  the stress of epoxy will be 130Mpa  which is close to the limit resistance stress of 139Mpa  some cracks appeared.  

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