基于LMI的超燃冲压发动机鲁棒PI控制器设计

LMI-based Robust PI Controller Design for Scramjet

首先将燃油供给系统作为超燃冲压发动机的主导动态,并假设燃油供给系统为惯性环节,构建了超燃冲压发动机推力闭环控制系统.然后基于LMI理论提出了一种单输入单输出系统PI控制器参数整定方法,并给出了该控制器存在的一个充分条件.最后基于该方法设计了超燃冲压发动机单点喷油推力闭环控制系统的PI控制器,仿真结果表明,该控制器具有良好的鲁棒性.

Fuel supply system is taken as main dynamics of scramjet and assumed as an inertial link to construct a scramjet thrust closed-loop control system. A LMI-based single-input single-output system is proposed for defining PI controller parameters. A sufficient condition for the existence of the designed controller is given. Finally, a PI controller for scramjet thrust closed-loop control system with single-point fuel injection is designed based on the proposed method. The simulation results show that the controller is provided with good robustness.