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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。
Aiming at the characteristics that the aerodynamic parameter of the NSV in the hypersonic flight of the nearspace vehicle changes drastically and is easily disturbed by the outside world, a method of variable-domain fuzzy control is proposed based on the intelligent control technology. Factor adjustment, change the scope of the universe of discourse, and reduce the computational complexity of the control. Combining the variable fast terminal sliding mode control of variable domain with the controller of the perturbed NSV slow loop, adaptively adjust the fuzzy universe to reduce the observation error and improve The robustness of the system and the speed of anti-jamming and the control precision, meanwhile the Lyapunov method is used to prove that the system error signal can converge in a limited time under the control law.