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	Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Zhang Y. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter based on high sampling rate was established model and error characteristics were analyzed. With the hypothesis of constant acceleration -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism the frequency characteristics of angular velocity transfer function are analyzed and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s sampling period and parameters are 0.08ms and 0.01279 respectively the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2) the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism -- filter can reduce noise effectively and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.
	Modulation transfer function in seeker camera limits resulting from missile flutter caused by aerodynamic force (EI CONFERENCE) 会议论文 OAI收割 2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 The imaging quality of seeker in flight mode has been evaluated through analyzing the effects of missile flutter on optical modulation transfer function (MTF) of the optical system. Firstly the data of transverse vibration has been processed to eliminate the trend term caused by the trajectory then obtained the displacement with two times trapezoidal integration. For the side rotation the high frequency noise interference in the data has been filtered by using five-point moving average method. Took this model as the quivering rule between the object and the image and then analyzed the effects of the transverse vibration and the side rotation on imaging quality through MTF. By calculation the r.m.s value of the image motion caused by missile transverse vibration is 0.026mm and the side rotation angle is 0.0044 . Through the establishment of two modulation transfer functions (MTF) of image random vibration and linear vibration the results show that the image quality had declined and the effect of transverse vibration on image quality is obvious. Through improving the rigidity of the missile and selection of small focal length optical system and shorten the time of exposure can improve the imaging quality of the seeker. 2010 IEEE.
	Effect of ka-band microwave on the spin dynamics of electrons in a gaas/al0.35ga0.65as heterostructure 期刊论文 iSwitch采集 Applied physics letters, 2009, 卷号: 94, 期号: 19, 页码: 3 作者: Luo, Haihui; Qian, Xuan; Gu, Xiaofang; Ji, Yang 收藏 \| 浏览/下载：32/0 \| 提交时间：2019/05/12 Aluminium compounds Carrier lifetime Gallium arsenide High-frequency effects Iii-v semiconductors Optical kerr effect Semiconductor heterojunctions Spin dynamics Two-dimensional electron gas
	Effect of Ka-band microwave on the spin dynamics of electrons in a GaAs/Al0.35Ga0.65As heterostructure 期刊论文 OAI收割 applied physics letters, 2009, 卷号: 94, 期号: 19, 页码: art. no. 192107 作者: Qian X 收藏 \| 浏览/下载：91/7 \| 提交时间：2010/03/08 aluminium compounds carrier lifetime gallium arsenide high-frequency effects III-V semiconductors optical Kerr effect semiconductor heterojunctions spin dynamics two-dimensional electron gas
	Electron quantum path tuning and isolated attosecond pulse emission driven by a waveform-controlled multi-cycle laser field 期刊论文 OAI收割 j. phys. b-at. mol. opt. phys., 2008, 卷号: 41, 期号: 21, 页码: 215601 曾志男; 冷雨欣; 李儒新; 徐至展收藏 \| 浏览/下载：875/106 \| 提交时间：2009/09/18 Attosecond Electron pulses Electron quantum paths Gas mediums Harmonic emissions Helium atoms High-order harmonic generations Infrared laser pulses Isolated attosecond pulses Laser fields Laser intensities Propagation effects Semiclassical models Time-frequency analysis
	Research on animal laser varicose treatment in CIOMP, CAS (EI CONFERENCE) 会议论文 OAI收割 Fifth International Conference on Photonics and Imaging in Biology and Medicine, September 1, 2006 - September 3, 2006, Wuhan, China 作者: Zhang L.; Guo J.; Guo J.; Li D.; Zhang L. 收藏 \| 浏览/下载：16/0 \| 提交时间：2013/03/25 The work on laser varicose treatment carried out in CIOMP It provides minimal invasion CAS cooperating with The First Clinical Hospital often under local anesthesia and intravenous sedation thereby eliminating the need for general anesthesia Jilin University is summarized. Dozens of animal experiments adopting dog and rabbit samples are made in a long time of several years. Different lasers are used greatly shortens postoperative recovery term including long pulse frequency-doubled Nd:YAG(532nm) and semiconductor laser(808nm). Dozens of animal experiments show that laser has good efficacy to occlude the vein vessels. It has precise adjustability and relatively short treatment time only needing outpatient office setting with high cost and effect rate and it is highly safe with no side effects and no serious complications.