基于L_1自适应的过载驾驶仪设计与全弹道仿真

本文针对便携式自寻的反坦克导弹进行了基于L_1自适应控制理论的导弹过载自动驾驶仪设计与全弹道仿真验证.首先建立了面向L_1自适应控制的便携式自寻的反坦克导弹动力学数学模型,然后基于L_1自适应控制理论和增益调度思想,针对动力学参数时变特性设计了导弹过载自动驾驶仪,并进行了响应性能仿真验证,最后在导弹飞行速度时变情况下设计了一种改进的弹道成型制导律,并将L_1自适应过载自动驾驶仪和弹道成型制导律结合在一起,进行了便携式自寻的反坦克导弹全弹道仿真.研究表明,本文设计的过载自动驾驶仪能够在导弹动力学参数快速时变且存在不确定性的情况下很好地响应过载指令,所提出的弹道成型制导律能使导弹以大落角近距离攻击目标顶部,且满足系统框架角、攻角、过载等约束条件.

Acceleration autopilot design based on L1 adaptive control theory and trajectory simulation

A novel autopilot based on L₁ adaptive control theory is designed for the portable homing anti-tank missile, and trajectory simulation is made to verify the performance of the system. Firstly, the mathematical model of the missile oriented to L₁ adaptive control is established. Secondly, a novel acceleration autopilot based on the L₁ adaptive control theory and gain-scheduled technology is designed and validation simulations are made. Finally, an improved trajectory shaping guidance law (TSG) with varying velocity is proposed. And the trajectory simulation using the L₁ adaptive autopilot and the TSG is carried out. Simulation results show that the autopilot can track the expected accelerated signal very well even in the presence of time-varying and uncertain dynamics. The improved TSG can make the missile attack the target from the top in short rang with large impact angle, while the requirement of attack angle, frame angle and acceleration constraints are satisfied.