中国科学院机构知识库网格系统: 检索

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	Unusual Phase Transition of Poly(di(alkyl) vinylterephthalates) 期刊论文 OAI收割 ACTA POLYMERICA SINICA, 2017, 期号: 9, 页码: 1506-1516 作者: Liu, Xin; Zheng, Xiao-hui; Liu, Xiao-qing; Zhao, Rui-ying; Zhao, Ti-peng \| 收藏 \| 浏览/下载：43/0 \| 提交时间：2018/04/25 Jacketing Effect Columnar Liquid Crystalline Phase Isotropic Phase Reentry Entropy Driven Ordering
	Normal acceleration reduce guidanceand control for sub-orbit vehicle re-entry 会议论文 OAI收割 Xiamen, China, 6-9 March 2017 作者: Li WH(李文皓); Xiao XX(肖歆昕); Zhang H(张珩); Xiao XX(肖歆昕) 收藏 \| 浏览/下载：34/0 \| 提交时间：2018/01/16 Aerodynamics Air Navigation Angle Of Attack Control Surfaces Control Theory Degrees Of Freedom (Mechanics) Dynamic Models Flight Control Systems Flight Simulators Monte Carlo Methods Reentry Spacecraft Surface Reactions Uncertainty Analysis Vehicles
	Time-varying Spectrum Based Active Disturbance Rejection Control for Hypersonic Reentry Vehicle 会议论文 OAI收割 Harbin, China, August 7-10, 2016 作者: Zhiqiang Pu; Jianhong Zhang; Ruyi Yuan; Jianqiang Yi \| 收藏 \| 浏览/下载：29/0 \| 提交时间：2016/10/25 Hypersonic Vehicle Reentry Active Disturbance Rejection Control Time-varying Spectrum
	An integrated composite with a porous C-f/C-ZrB2-SiC core between two compact outer layers of C-f/C-ZrB2-SiC and C-f/C-SiC 期刊论文 OAI收割 Journal of the European Ceramic Society, 2015, 卷号: 35, 期号: 3, 页码: 1113-1117 C. L.; Pang Hu, S. Y.; Tang, S. F.; Wang, Y. C.; Cheng, H. M. 收藏 \| 浏览/下载：31/0 \| 提交时间：2015/05/08 Ceramic matrix composites Mechanical properties Ablation Thermal protection Weight reduction thermal protection system reentry conditions c/sic composites ablation behavior fabrication fracture optimization ceramics
	The role of epigenomics in the neurodegeneration of ataxia-telangiectasia 期刊论文 OAI收割 EPIGENOMICS, 2015, 卷号: 7, 期号: 2, 页码: 137-141 作者: Li JL[*]; Jiang DW 收藏 \| 浏览/下载：25/0 \| 提交时间：2015/07/07 ataxia-telangiectasia cell cycle reentry classic II HDACs EZH2 H3K27me3 HDAC4 histone acetylation histone methylation
	Reentry guidance based on parametric optimization (EI CONFERENCE) 会议论文 OAI收割 2012 International Conference on Mechatronics and Control Engineering, ICMCE 2012, November 29, 2012 - November 30, 2012, Guangzhou, China 作者: Li D. 收藏 \| 浏览/下载：168/0 \| 提交时间：2013/03/25 This paper presents a parametric optimization approach to solve reentry guidance. Due to the various constraints imposed on the trajectory original guidance problem can be converted into an optimal control problem with a merit function to be minimized. Direct implementation of method of variation and is too complex to get a reasonable result while a numerical parametric optimization approach is feasible and efficient if we choose appropriate control variables as the optimization parameters and effective optimization algorithm. A simulation of the approach is performed to show its validity on reentry guidance problem: as the value of merit function converges to acceptable threshold all constraints are hold. (2013) Trans Tech Publications Switzerland.
	Reentry guidance based on feedback linearization (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electronics, Communications and Control, ICECC 2011, September 9, 2011 - September 11, 2011, Ningbo, China Li D.-W. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 This paper presents a new reentry guidance algorithm for RLV (Reusable Launching Vehicle). The algorithm consists of two integrated components: trajectory planning algorithm and tracking algorithm. The most striking feature of algorithm here lies in that both planning and tracking are executed directly in height-velocity space which is different from the methodology of configuration of drag in traditional shuttle guidance. In the session of trajectory planning all trajectory constraints can be expressed with upper bound and lower bound in height-velocity space then a linear interpolation is carried to search the nominal trajectory satisfying the requirement of downrange and target constraints. Then the tracking algorithm uses feedback linearization method to track this nominal profile and meet all constraints. Another typical feature of this algorithm is the strategy of downrange extension using FPA (flight path angle) controller to fulfill the requirement of large downrange. Proper combination of planning-tracking algorithm and FPA controller can bring great flexibility and adaptability to reentry guidance. The algorithm is proved to be robust enough to accommodate the model error and noises in the dynamics. 2011 IEEE.
	再入尾迹电磁特性的湍流效应研究学位论文 OAI收割博士, 北京: 中国科学院研究生院, 2000 - 收藏 \| 浏览/下载：1132/95 \| 提交时间：2009/04/13 再入尾迹湍流电磁散射亚密等离子体湍流模式理论 reentry wake turbulence flow electromagnetic scattering underdense plasma turbulence modelling theory