【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。更多还原

【Abstract】 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 robustness,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.更多还原