基于RLESO的高超声速巡航飞行器跟踪控制器设计

Tracking Controller Design for Hypersonic Cruise Vehicle Based on RLESO

针对高超声速巡航飞行器的强非线性、强耦合、快时变以及不确定性等特性,文章设计了一种基于降阶线性扩张状态观测器的自抗扰跟踪控制器。其将高超声速巡航飞行器的纵向平面运动模型分为速度回路和高度回路,对各回路分别设计辅助状态变量以简化跟踪控制器的设计过程;在此基础上,对两个回路分别设计基于降阶线性扩张状态观测器的自抗扰跟踪控制器来获得满意的控制性能。仿真结果表明,相比于常规的线性自抗扰跟踪控制器,以降阶线性扩张状态观测器为基础的自抗扰跟踪控制器能够以更快的速度跟踪上系统的期望输入,且超调量更小。

An active disturbance rejection tracking controller based on reduced-order linear extended state observer was designed for the hypersonic cruise vehicle with strong nonlinearity,coupling,uncertainties and fast time-varying.The longitudinal plane motion model of the hypersonic cruise vehicle can be divided into velocity loop and altitude loop.New variables were set for the two loops to simplify the design of the tracking controllers.Then,the active disturbance rejection tracking controller based on reduced-order linear extended state observer was designed separately for each loop to acquire desired performance.Simulations were performed to verify the performance of the designed controllers.Results show that the active disturbance rejection tracking controller based on reduced-order linear extended state observer has faster response and smaller overshoot as compared to the conventional linear active disturbance rejection controller.