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	Trajectory tacking control of a quad-rotor based on active disturbance rejection control (EI CONFERENCE) 会议论文 OAI收割 2012 IEEE International Conference on Automation and Logistics, ICAL 2012, August 15, 2012 - August 17, 2012, Zhengzhou, China Gong X.; Tian Y.; Bai Y.; Zhao C. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 The objective of this paper is to deal with a trajectory tracking of a Quad-rotor unmanned aerial vehicle (UAV). For the model uncertainty the external disturbance and the coupling factor are considered an active disturbance rejection control (ADRC) algorithm is introduced into the designing procedure. The aircraft dynamic model is proposed in this article based on which the closed-loop control system is divided into four independent channels with the coupling factor compensated by the extended state observer (ESO). The nonlinear state error feedback (NLSEF) algorithm is designed in each channel to improve the closed-loop dynamics. In this article the ADRC controller is expressed in the discrete form. And finally the simulation results show that the proposed control algorithm achieves a favourable tracking performance. 2012 IEEE.
	Futures price modeling under exchange rate volatility and its multi-period semi-variance portfolio selection 期刊论文 OAI收割 INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE, 2009, 卷号: 40, 期号: 11, 页码: 1139-1148 作者: Yan, Wei; Li, Shurong \| 收藏 \| 浏览/下载：23/0 \| 提交时间：2018/07/30 four-factor model multi-period semi-variance portfolio exchange rate futures hybrid GA with PSO economic systems finance partial differential equations genetic algorithms
	A class of portfolio selection with a four-factor futures price model 期刊论文 OAI收割 ANNALS OF OPERATIONS RESEARCH, 2008, 卷号: 164, 期号: 1, 页码: 139-165 作者: Yan, Wei; Li, Shurong \| 收藏 \| 浏览/下载：23/0 \| 提交时间：2018/07/30 Four-factor model Multi-period semi-variance portfolio Exchange rate Futures Numerical algorithm