从分析预测控制的内模机理出发,把系统稳定鲁棒性和品质鲁棒性要求作为内模控制器设计的两个约束条件,利用控制理论中频域分析的方法把离散控制系统的控制器设计转化到频域进行分析,推导出满足系统稳定鲁棒性和品质鲁棒性条件的内模控制器,从而得出预测控制鲁棒性设计的条件,使控制系统能较好的抑制外部扰动所产生的影响。仿真实验结果表明该设计比传统的CHR和Cohen-Coon整定算法有更优异的控制效果。
According to IMC principle, the robust stability and robust performance are considered as two constraints in internal model controller design. Frequency domain analysis in control theory was used to design the controller of discrete control system. The internal model controller parameters were derived to meet both robust stability and robust performance and suppress external disturbance. The simulation results show that the proposed design improves the dynamic performance comparing with both CHR and CohenCoon tuning.