The invention provides a hypersonic-speed deformable waverider control method, and designs a double-power fixed-time convergence backstepping controller constructed by set constants r1 and r2, and the convergence characteristic of the controller in a fixed time is realized through terms where the two powers r1 and r2 are located, that is to say, the convergence characteristic of the controller in the fixed time is realized through the terms where the two powers r1 and r2 are located. The double-power backstepping controller has higher convergence speed when the system state is far away from and close to a balance point, and can ensure that the system converges at fixed time; meanwhile, the invention also designs a fixed time convergence disturbance observer, the disturbance observer is combined with a backstepping control method, and the disturbance observer is utilized to compensate a control law for an observed value of disturbance, so that buffeting existing in the HMW control process is effectively weakened, the robustness of the controller is improved, and the robustness of the controller is improved. Therefore, the problem that the flight of the hypersonic-speed deformable waverider has strong uncertainty and is easily influenced by disturbance is solved.
本发明提供一种高超声速可变形乘波体控制方法,设计了一种由设定常数r1和r2构建的双幂次固定时间收敛的反步控制器,通过r1和r2这两个幂次所在的项来实现控制器在固定时间内的收敛特性,也就是说,本发明的双幂次反步控制器在系统状态远离和靠近平衡点时均具有更快的收敛速度,能够保证系统固定时间收敛;同时,本发明还设计了一种固定时间收敛扰动观测器,通过将扰动观测器与反步控制方法相结合,利用扰动观测器对扰动的观测值补偿控制律,有效削弱了HMW控制过程中存在的抖振,提高了控制器的鲁棒性,从而解决高超声速可变形乘波体飞行具有强不确定性,极易受到扰动影响的问题。
Hypersonic-speed deformable waverider control method
一种高超声速可变形乘波体控制方法
2024-11-15
Patent
Electronic Resource
Chinese
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