基于干扰观测器的导弹自动驾驶仪的反演设计

在分析喷流干扰的基础上,建立了含有干扰放大因子的复合控制的弹体模型.针对导弹气动参数的不确定性及外界干扰对导弹控制性能的影响,利用非线性干扰观测器对干扰的逼近特性,结合反演控制设计了非线性导弹自动驾驶仪,并基于Lyapunov方法,给出了整个系统的稳定性证明.仿真结果表明,设计的控制方案不仅提高了系统响应速度,而且能够保证系统具有良好的鲁棒性.

Enhanced back-stepping control for missile autopilot based on nonlinear disturbance observer

The authors present an enhanced back-stepping control structure based Nonlinear Disturbance Observer(NDO) with aerodynamic and lateral thruster.Based on the analysis the phenomenon of jet interaction,a mode of missile with jet interaction amplification factor is set up.For overcoming the disadvantages of uncertainties and unknown disturbance,the back-stepping control structure based on NDO is designed in virtue of NDO's approaching ability.The overall system guarantees that all signals involved are asymptotically stable by Lyapunov method.The simulation results show that this blend control method could cut down the time of response,and enhance the robust performance of system.