线性时滞系统内模控制的研究

Study of IMC of Line-Time Delay System

内模控制是近年来发展起来的一种新型控制方法,分析它的原理对于工程应用和理论研究具有重要的意义。从IMC结构分析人手揭示了内模控制的本质,证明了该系统可实现对阶跃信号的无差跟踪及在阶跃信号扰动下可实现无差控制,给出了时滞线性系统内模控制器和内模滤波器的设计方法。并基于MATLAB仿真研究表明,线性时滞过程的内模控制具有较好的鲁棒性,有一定的应用价值。

Internal Model Control （IMC） is a new control method developed in the past decade. It is important to analyze its theory in applications and in academic researches. In this paper, the essential of IMC is presented based on structural analysis; it proves that the system can track the step signal and be controlled with the perturbation of the step signal accurately. IMC is good for controlling the long time-delay system. The methods of the design of IMC controller and IMC filter are given. Based on MATLAB, simulation results show that internal model control has simple structure and is easy to be designed and readjusted, so it has certain application value.