近空间飞行器变论域姿态控制研究  

Variable Universe Fuzzy Control on Nearspace Vehicle

作　　者：贺乃宝[1,2] 高倩[1] 姜长生[2] 

机构地区：[1]淮海工学院电子工程学院,江苏连云港222005 [2]南京航空航天大学自动化学院,江苏南京210016

出　　处：《控制工程》2013年第1期121-123,共3页Control Engineering of China

基　　金：国家自然基金课题(90716028)

摘　　要：针对近空间飞行器(nearspace vehicle)NSV在高超音速飞行时,气动参数变化剧烈且容易受到外界干扰的特点,基于智能控制技术提出了变论域模糊控制的方法,通过对模糊控制中论域的伸缩因子调节,改变论域范围,减少了控制的计算量,结合变论域模糊快速Terminal滑模控制对受扰动的NSV慢回路进行控制器设计,自适应地调整模糊论域来降低观测误差,提高系统鲁棒性能和抗干扰的速度以及控制精度,同时采用Lyapunov方法严格证明了在控制律作用下,系统误差信号能够在有限时间内收敛。Variable universe fuzzy control based on intelligent control technology is proposed in this paper for the hypersonic flight process of nearspace vehicle （NSV） with severe changes of aero-dynamic parameters and susceptibility on the external disturbances. And the contraction-expansion factor of the fuzzy control is given to modify the scale of universe and reduce the computational cost. By adopting fast fuzzy terminal sliding mode with variable universe in the slow loop controller which is suffering the disturbance, its robust- ness, the speed of anti-disturbance and control accuracy are enhanced with the adaptively modified fuzzy universe. A demonstration with the Lyapunov function is given to proved that the errors of system could converge to zero in finite time.

关 键 词：变论域 鲁棒控制 近空间飞行器 TERMINAL滑模控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]