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	Augmented fixed-time observer-based continuous robust control for hypersonic vehicles with measurement noises 期刊论文 OAI收割 IET CONTROL THEORY AND APPLICATIONS, 2019, 卷号: 13, 期号: 3, 页码: 422-433 作者: Sun, Jinlin; Yi, Jianqiang; Pu, Zhiqiang \| 收藏 \| 浏览/下载：72/0 \| 提交时间：2019/07/12 linearisation techniques observers control system synthesis vehicle dynamics adaptive control aircraft control uncertain systems robust control variable structure systems space vehicles augmented fixed-time observer measurement noises cruise control flexible air-breathing hypersonic vehicles controller gains finite-time convergence fixed convergence time FAHV gain adaptation law continuous robust control input-output linearisation technique
	Experimental and computational investigation of a full aircraft flutter at transonic speeds 会议论文 OAI收割 Bristol, United kingdom, June 24, 2013 - June 27, 2013 作者: Qian W; Yang GW(杨国伟); Luo JG; Yang R; Zhang GJ \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2018/11/08 Aeroelasticity Aircraft manufacture Airframes Computational fluid dynamics Elastic waves Flutter (aerodynamics) Structural dynamics Supersonic aircraft Transonic aerodynamics Viscous flow Wind stress Wind tunnels Aircraft structure CFD simulations CFD/CSD Computational investigation Flutter boundary predictions Transonic flutter Unsteady aerodynamics Wind tunnel tests
	High accuracy star image locating and imaging calibration for star sensor technology (EI CONFERENCE) 会议论文 OAI收割 6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China 作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 Today aircraft attitude measurement technology plays an important role in an aircraft system because it can provide orientation for aircraft in action. Lately star sensor technology used in aircraft attitude measurement has become more and more popular because of its high accuracy light weight without attitude accumulation errors and other advantages. There are three main steps for star sensor to measure aircraft attitude star image locating star identification and attitude tracking. The latter two steps are based on the accuracy of star image locating. So it's critical to make efforts to advance the accuracy of star image locating. Some imaging errors such as spherical aberration or coma aberration also have negative effect on the accuracy of star image locating of which the effect is necessarily reduced as well. At the beginning of this article the structure of star sensor hardware is introduced. Secondly three methods for star image locating are described specifically which are traditional centroid method Gauss quadric fitting method and improved Gauss quadric fitting method. Subsequently an imaging calibration method is described for the purpose of reducing the effect of imaging errors. Finally the experiment shows that the accuracy of the star sensor is 2-arc-second. 2010 SPIE.