【摘要】 由于采用机体/发动机高度一体化设计,吸气式超燃冲压高超声速飞行器的气动特性难以准确获得。针对这一问题,研究了一种基于模糊自适应的控制方法,使得高超声速飞行器在气动模型不确定情况下,依然能够保持较好的控制精度。采用模糊自适应方法设计了高超声速飞行器纵向控制系统,并进行了无偏和拉偏仿真。仿真结果表明,该方法能够有效克服气动模型不确定性,实现飞行器的速度和高度的跟踪控制。更多还原

【Abstract】 Because of airframe-propulsion integrated configuration design,the air-breathing hypersonic scramjet vehicle’s accurate aerodynamic characters are difficult to obtain.According to this character,a control method combining adaptive and fuzzy control is presented.Even if vehicle’s aerodynamic characters are not accurate,high control accuracy can be still obtained.Using a fuzzy adaptive control,a longitudinal control system is designed for hypersonic vehicle.The simulation results show that the controller can track the velocity and altitude command accurately with the effect of the uncertainty of the aerodynamic characters.更多还原