Gust load alleviation control of aircraft with large ratio flying wing configuration
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摘要: 大展弦比飞翼构型具有优越的气动和隐身特性,但由于构型原因无法配置常规操纵面,因此常规构型飞机的阵风减缓控制方法不再适用. 研究了大展弦比飞翼构型飞机新型多操纵面的典型配置方案,同时对其应用直接升力方法进行阵风减缓控制时的新的操纵及控制原理进行 了分析.采用极点配置方法设计了相应的阵风减缓控制律,并且通过有关的准则检验了该控制律的效果.最后通过计算并比较开环和闭环飞 机的频谱响应,验证了该控制律减缓飞机阵风响应的有效性.Abstract: The configuration of flying wing aircraft with large aspect ratio is advantageous on the characteristic of aerodynamics and stealth, but due to lack of conventional elevator and rudder, gust load alleviation control method for the aircraft with conventional configuration is not suitable anymore. The characteristics of representative arrangement of control surfaces on an aircraft with flying wing configuration were discussed; also the specialty with configuration of flying wing in gust alleviation system was analyzed, when applying the method of direct lift force control. To improve a flying wing aircraft-s response to atmospheric turbulence, a control law of the control system was designed, using the method of poles configuration of invariable characteristic structure. At last, both the aircraft-s open-loop and closed-loop responses to atmospheric turbulence were calculated, analyzed and compared; meanwhile, the aircraft-s ride quality was given and compared to some criterion. Results show that the control law given by the method can improve the aircraft response to atmospheric turbulence effectively.
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Key words:
- flying wing configuration /
- gust alleviation /
- direct lift force control /
- control law
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[1] Woods-Vedeler J A, Pototzky A S, Hoadley S T. Rolling maneuver load alleviation using active controls [J]. Journal of Aircraft,1995,32(1):172-180 [2] 马超,李林,王立新.大展弦比飞翼布局飞机新型操纵面设计[J].北京航空航天大学学报,2007,33(2):149-153 Ma Chao,Li Lin,Wang Lixin. Design of innovative control surfaces of flying wing aircrafts with large ratio aspect[J]. Journal of Beijing University of Aeronautics and Astronautics,2007,33(2):149-153(in Chinese) [3] 方振平,陈万春,张曙光.航空飞行器飞行动力学[M].北京: 北京航空航天大学出版社,2005:288-302 Fang Zhenping,Chen Wanchun,Zhang Shuguang.Flight dynamics for aircrafts[M].Beijing: Beijng University of Aeronautics and Astronautics Press,2005:288-302(in Chinese) [4] 孙权志.某大型飞机在大气紊流作用下乘座品质响应计算[J].飞行力学,1984(1):61-71 Sun Quanzhi. Calculation of ride quality of a large aircraft in response to atmospheric turbulence[J]. Flight Dynamics,1984(1):61-71(in Chinese) [5] 胡寿松.自动控制原理[M].第4版.北京:科学出版社,2001:477-500 Hu Shousong. The principle of automatic control[M]. Fourth Edition. Beijing: Science Press, 2001:477-500(in Chinese) [6] 薛定宇.控制系统计算机辅助设计——MATLAB语言与应用[M].第2版.北京:清华大学出版社,2006:252-255 Xue Dingyu. Computer aided control system design using MATLAB language[M]. Second Edition. Beijing:Tsinghua University Press, 2006:252-255(in Chinese) [7] Mengali G, Pieracci A. Ride quality of civil aircraft from a probabilistic viewpoint [J]. Journal of Guidance, Control, and Dynamics,2000,23(2):319-324 [8] 高浩.改善乘坐品质纵向增稳器反馈系数的选择[J].航空学报,1984, 5(1):18-23 Gao Hao. Selection of SAS’s longitudinal feedback coefficients to improve riding qualities[J]. Acta Aeronautica Et Astronautica Sinica, 1984,5(1):18-23 (in Chinese) -
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