Abstract:

A multi-loop adaptive tracking control strategy based on the switched polytopic system is proposed 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 hypersonic 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 hypersonic 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.