高超声速制导炮弹终端滑模控制

针对高超声速制导炮弹的动力学耦合与非线性控制问题,设计一种基于反馈线性化的终端滑模控制器。首先,兼顾控制系统设计的简便性要求与高超声速制导炮弹的强非线性特点,建立非线性控制模型。然后,对模型中动力学耦合问题,根据微分几何理论对其进行反馈线性化,实现俯仰通道与偏航通道的解耦。最后,对两通道分别设计终端滑模控制器,且控制器有限时间收敛。仿真结果表明,所设计的控制器能够快速稳定的追踪指令信号,且在外界干扰与参数摄动的情况下依然具有良好的鲁棒性。

Terminal sliding mode control for hypersonic guided projectile

Aiming at the dynamic coupling and nonlinear control of hypersonic guided projectile, a feedback linearized terminal sliding mode controller is designed. Firstly, the nonlinear control model is established by considering the simplicity of control system design and the strong nonlinear characteristics of the hypersonic guided projectile. Then the dynamic coupling problem in the model, the feedback linearization is carried out according to the theory of differential geometry to realize the decoupling of pitch channel and yaw channel. Finally, the terminal sliding mode controller is designed for the two channels respectively, and the controller converges in finite time. The simulation results show that the designed controller can track the command signal quickly and stably, and still has good robustness in the case of external interference and parameter perturbation.