基于自抗扰的冲压发动机导弹大过载机动控制

High Overload Maneuver Control of Ramjet Missile Based on Active Disturbance Rejection Control

采用自抗扰控制方法设计了过载和马赫数控制律。根据导弹纵向运动方程,采用精确线性化方法建立了导弹过载控制和马赫数控制模型,将模型不确定性和外界扰动视为总干扰,并建立扩张状态观测器对其进行精确估计,然后设计了基于状态误差和干扰补偿的过载和马赫数非线性反馈控制律。仿真结果表明所设计的控制器能够快速稳定跟踪大过载机动控制指令,在机动过程中能充分发挥冲压发动机推力性能,使导弹能尽可能准确的跟踪马赫数指令;此外过载通道和马赫数通道之间耦合较小,充分验证了所设计控制器的有效性。

The active disturbance rejection control(ADRC)method was adopted to design the overload and mach control law for the ramjet missile high overload maneuver.The overload control model and mach control model were derived from the longitude motion equations using accuracy linearization method,the uncertainties and unknown disturbances of the linearization control model were regarded as the total disturbance and extended to a new state variable and estimated precisely with the extended states observer(ESO).Then the nonlinear feedback laws of overload loop and mach loop based on state errors disturbance compensation were designed.Simulation results show that the presented control law can rapidly and stably track the high overload command signal,meanwhile the ramjet thrust was fully exploited so as to track the mach command signal as accurate as possible during the process of high overload maneuver.In addition,the coupling between the overload loop and the Mach loop is very weak.So the results verified and demonstrated the effectiveness of the presented control law.