高超声速飞行器切换多胞系统自适应跟踪控制

摘要

针对保证大包线稳定飞行的高超声速飞行器轨迹跟踪控制器设计问题，提出了一种多回路切换多胞自适应跟踪控制方案。基于运动模态在频率上存在显著的时标分离特性，将高超声速飞行器的状态分成内外回路进行设计，考虑到干扰及外回路对内回路的不确定影响，采用增益调度与自适应控制结合的方法设计了内外回路控制器。该方法解决了将该飞行器切换多胞系统作为整体设计时无法综合出保证全局稳定控制器的问题，并且降低了控制器设计的复杂性。仿真结果表明，闭环跟踪系统在工作包线内具有良好的动态响应品质与稳态跟踪性能，从而验证了控制方案的有效性。%A multi-loop adaptive tracking control strategy based on the switched polytopic system is pro-posed to solve the trajectory tracking problem of hypersonic vehicle.This controller can guarantee stability within the full flight envelope.Because of the timescale separation property,the flight dynamic model of the hy-personic vehicle is separated into the outer loop system and the inner loop system.The controllers of these two systesms are all designed combining gain scheduling and adaptive control considering the uncertain influence. The controller that guarantees global stability can not be obtained when designed as an integral of this hyperson-ic vehicle switched polytopic system.The proposed method not only solves this problem,but also reduces the complexity of the controller design.The simulation results demonstrate satisfactory transient characteristics and tracking performance of the closed loop system,which verifies the validity of this control strategy.