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	LABTM control system based on FPGA (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan 作者: Wang Y.; Yu P.; Yu P.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：152/0 \| 提交时间：2013/03/25 This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI a real LABTM and a real absolute Inductosyn encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model it is verified that the rising time of current loop is only 1.2ms and rate loop is 8ms overshoot is rarely 4.2%. Finally the comprehensive positioning accuracy of system can reach up to 5 arc sec and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications Switzerland.
	The effectiveness of real-time embedded software testing (EI CONFERENCE) 会议论文 OAI收割 2011 9th International Conference on Reliability, Maintainability and Safety: Safety First, Reliability Primary, ICRMS'2011, June 12, 2011 - June 15, 2011, Guiyang, China Zhang B.; Shen X. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 Real-time embedded software is widely applied in the fields with high reliability and security like aviation and space flight etc. In those systems software quality is of vital importance and software testing as a means of guaranteeing the quality of software is gaining increasingly more attention. The effectiveness of software testing enables people to gain confidence in software correctness. The real-time and embedding features of embedded software lead to the particularity in real-time embedded software testing. On the basis of particularity analysis of embedded software testing the author of this thesis further conducted research on the effective Software Testing and proved that it is valid to adopt testing techniques and strategies through experiments. 2011 IEEE.
	Layered graphene on surface of carbon fiber (EI CONFERENCE) 会议论文 OAI收割 8th International Vacuum Electron Sources Conference, IVESC 2010 and NANOcarbon 2010, October 14, 2010 - October 16, 2010, Nanjing, China 作者: Wang W.; Wang W. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 Carbon nanomaterials have attracted considerable attention and interest owing to the unique physical and chemical properties. Such as nanodiamonds carbon nanofibers carbon nanotubes (CNTs) graphene and so on they all have potential applications as field electron emission materials electrode materials storage hydrogen materials and composite materials. In this paper we reported the growth of layered graphene(LG) on carbon fibers surface. The LG synthesized on carbon fibers may have potential applications in many fields. For example using to improve the electric conductivity and chemical stability of carbon fibers substrate the grown LG can be applied as high performance capacitor battery field emission electron source hydrogen storage owing to large ratio surface and hybrid multiscale composite. 2010 IEEE.
	Space optics remote sensor focusing components mechanics characteristic analysis based on FEM (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, June 17, 2009 - June 19, 2009, Beijing, China 作者: Wang B.; Ren J.-Y.; Wang B. 收藏 \| 浏览/下载：151/0 \| 提交时间：2013/03/25 Space optical remote sensor is very important in many fields of science and military significance. It is widely applied. Space optical remote sensor design and manufacturing require precision and stability. Focusing mechanics is an important component of remote sensors. Focusing mechanics can guarantee the stability of the entire mechanics focusing accuracy therefore the stability of research focusing mechanics is very important. In order to guarantee the space optics remote sensor focusing mechanics the stability takes steps the space optics remote sensor focusing organization mechanics characteristic analysis from the classics contact theory. This article uses international general non-linear finite element analysis software ABAQUS to carry on mechanics characteristic analysis to the space optics remote sensor focusing mechanics. First acts according to the focusing mechanics unique feature carries on the finite element to the structural model the grid division the material attribute disposition and the boundary condition indeed grades. Then establishment contact non-linear finite element model and to focusing organization finite element model infliction unit action. Like this contacts the result and the equivalent static analysis result which the nonlinear analysis obtains carries on the contrast and the analysis. This article last count result modality is 90HZ satisfies the space optics remote sensor structure overall modality to request to be bigger than 50HZ.This article when carries on the dynamic analysis extracts the structure kinetic energy and the acceleration curve. In the dynamic analysis obtained transient response analysis modality 70.5Hz this also is bigger than 50HZ. The dynamic analysis indicated the structure dynamic stability has the distinct enhancement has provided certain foundation for the space optics remote sensor following development work reduced the overall system development cycle. 2009 SPIE.
	Phase control of switching from positive to negative index material in a four-level atomic system 期刊论文 OAI收割 j. phys. b-at. mol. opt. phys., 2008, 卷号: 41, 期号: 12, 页码: 125503 张红军; 钮月萍; 孙辉; Luo Jian; 龚尚庆收藏 \| 浏览/下载：870/68 \| 提交时间：2009/09/18 Applied fields Atomic systems Different frequencies Four-level atomic systems Magnetic responses Negative index material (NIM) Negative-index Positive index material (PM) Probe fields
	The effect of electric field maximum on the Rabi flopping and generated higher frequency spectra 期刊论文 OAI收割 new j. phys., 2008, 卷号: 10, 页码: 103028 钮月萍; Cui Ni; Xiang Yang; 李儒新; 龚尚庆; 徐至展收藏 \| 浏览/下载：841/48 \| 提交时间：2009/09/18 Applied fields Bloch equations Cycle pulses Higher frequencies Maximum behaviors Population inversions Rabi flopping Spectra properties Spectral features Transient electric fields
	On orbit MTF measurement of remote sensing camera based on wavelet transform (EI CONFERENCE) 会议论文 OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者: Wang X.; Wang X.; Wang X. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 High resolution remote sensing images are often applied in many research fields. But there are less research on images quality for an orbit remote sensing camera. The magnitude of the OTF as the modulation transfer function (MTF) is a measure of the 2-D spatial frequency response of the remote sensing camera. In this paper knife-edge technique based on quadratic spline wavelet fast transform algorithm is proposed and applied to generate MTF with a greatly high resolution in horizontal or vertical direction. The result has fully demonstrate the potential applicability and good property of the method to estimate MTF for remote sensing camera.