带有多重输出误差反馈的改进型内模控制器

IMPROVING INTERNAL MODEL CONTROL SYSTEMBY INTRODUCING MULTIPLE OUTPUT ERROR FEEDBACKS

本文通过对被控对象模型的传递函数并行结构分解,引入多重输出误差反馈,并根据内模结构来设计系统控制器。理论分析表明,依照上面方式设计的内模控制器,只要适当选择输出误差反馈增益,在被控对象模型与内模相同时,可实现极点配置,从而使内模控制器可适用于不稳定对象。文中还给出了设计实例。

In this paper, multiple output error feedbacks are introduced via the parallel decomposition of the plant transfer function in the internal model control system. It is shown, when there is no mismatch between plant and its model, the internal model control system thus designed can realize pole placement by appropriate selection of the feedback gains, and furthermore making it suitable for the unstable plant. An example is presented as a prove.