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针对导弹直接力/气动力复合控制的特点,提出了一种基于参考模型的自适应滑模控制方案。该设计方法针对系统所存在的不确定性,在滑模控制中引入了自适应参数调节律和模糊控制规则,采用自适应律逼近模型摄动和外界干扰的上界,采用模糊调节律有效减弱了一般变结构控制系统的抖颤问题,既进一步增强了系统的鲁棒性,又提高了自适应参数收敛过程中的跟踪精度。仿真结果表明,所提出的控制方案对机动指令具有较好的跟踪效果,适用于直接力/气动力复合控制导弹的控制系统设计。
Aiming at the characteristics of missile direct force / aerodynamic compound control, an adaptive sliding mode control scheme based on reference model is proposed. Aiming at the uncertainty of the system, this design method introduces adaptive parameter adjustment law and fuzzy control rules in sliding mode control. The adaptive law is used to approximate the upper bounds of model perturbation and external disturbance, and the fuzzy adjustment law is effectively reduced The general dithering problem of variable structure control system not only further enhances the robustness of the system, but also improves the tracking accuracy in the process of adaptive parameter convergence. The simulation results show that the proposed control scheme has good tracking effect on maneuvering instructions and is suitable for the control system design of direct force / aerodynamic compound control missile.