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1. 北京航空航天大学 自动化科学与电气工程学院 飞行器控制一体化技术重点实验室, 北京 100191;
2. 中国商用飞机有限责任公司 上海飞机设计研究院 综合航电设计研究部, 上海 201210

Three-dimensional visual simulation of civil aircraft taking off in wind shear
LUO Qinan1 , DUAN Haibin1 , YAN Linfang2
1. Science and Technology on Aircraft Control Laboratory, School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China ;
2. Integrated Avionics System Department, Shanghai Aircraft Design and Research Institute, Commercial Aircraft Corporation of China Ltd, Shanghai 201210, China
Abstract: Focusing on the problem of wind shear disturbance during the taking off procedure of civil aircrafts, a MATLAB based three-dimensional visual simulation platform has been developed. Based on the description of the models of microburst, mountain airflow and turbulence, the influences of complex wind shear during taking off are analyzed, and the related equations are also deduced. The symbolic control-based flight control system for taking off in the wind shear is designed. Taking advantages of the expansibility and open character of the MATLAB Simulink, an interactive software is also developed. Experimental results verified the feasibility and effectiveness of our developed platform.
Key words: civil aircraft     wind shear     symbolic control     three-dimensional visual simulation

1 复杂风切变建模 1.1 微下击暴流建模

 图 1 涡环法建模 Fig. 1 Microburst model based on vortex method

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 图 2 微下击暴流风场 Fig. 2 The simulation result of a typical microburst
1.2 三维大气紊流建模

 图 3 大气紊流生成器的结构 Fig. 3 The structure of the turbulence generator
 图 4 大气紊流生成器生成的紊流序列u、vx、wx片段 Fig. 4 The simulation results of a typical turbulence
1.3 复杂风切变对飞机运动的影响

X方向的风速ug的作用相当于降低了前进速度, Y方向的风速vg的效果是引起侧滑角, Z方向的紊流速度wg的效果是引起迎角, 风切变速度梯度∂wg/∂x在气动效果方面相当于俯仰角速度q, 而∂wg/∂y相当于负的滚转角速度, ∂vg/∂y相当于偏航角速度。综合以上因素, 风切变对民用飞机飞行运动的影响可以表示为[7]

2 基于MATLAB虚拟现实的三维可视化仿真

 图 5 仿真平台框架示意 Fig. 5 The architecture of simulation platform

 图 6 VRML工具建立的民用飞机模型 Fig. 6 The civil aircraft model in VRML
 图 7 VRML建立的三维实景 Fig. 7 3D scene environment in VRML

 图 8 基于状态反馈的符号控制结构 Fig. 8 The symbolic control structure based on state feedback

 图 10 VRML目录树 Fig. 10 The directory tree in VRML

 图 11 大型民用飞机起飞模拟 Fig. 11 Simulation of civil aircraft during takeoff
 图 12 大型民用飞机空中飞行模拟 Fig. 12 Simulation of civil aircraft during flying

 图 13 飞机空中飞行状态 Fig. 13 Flight states of the civil aircraft
 图 14 飞机空中飞行各状态响应曲线 Fig. 14 Response curves of the civil aircraft
3 结束语

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DOI: 10.3969/j.issn.1673-4785.201307041

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#### 文章信息

LUO Qinan, DUAN Haibin, YAN Linfang

Three-dimensional visual simulation of civil aircraft taking off in wind shear

CAAI Transactions on Intelligent Systems, 2014, 9(1): 19-25
http://dx.doi.org/10.3969/j.issn.1673-4785.201307041