基于扩张状态观测器的导弹纵向控制系统设计

摘要

Based on the extended state observer (ESO) , the control system for the missile longitudinal plane is designed. Firstly, the elasticity of missile body, the uncertainty of model parameters and the dynamics of measurements are treated as the composite disturbance and an extended state of the system. Then the ESO is used to estimate the states of the extended system, which are used for the feedback of a control algorithm and the design of compensate control. Finally, the closed-loop stability of the controller algorithm is proved. Simulation results show that the proposed control algorithm has good command tracking properties and strong robustness.%基于扩张状态观测器设计了导弹纵向通道控制系统.首先将弹体弹性、模型参数的不确定性和测量元件的动态特性视为复合干扰,并将其作为系统的一个扩张状态；然后利用扩张状态观测器对扩维后的系统状态进行估计,将估计值用于状态反馈和设计控制补偿项；最后给出了控制算法的稳定性证明.仿真结果表明,所设计的控制算法具有较好的指令跟踪性能和强鲁棒性.