基于继电反馈的内模控制方法研究  

Improved IMC of two degree of freedom method based on the unstable processes with time-delays

作　　者：金妮[1] 何宏源[2] 

机构地区：[1]中科院沈阳自动化研究所,沈阳110016 [2]辽宁电力勘测设计院,沈阳110005

出　　处：《仪器仪表学报》2006年第z3期1913-1915,1921,共4页Chinese Journal of Scientific Instrument

摘　　要：工业过程中存在着很多不稳定时滞过程,使用传统的IMC方法对其进行控制只有一个可调参数,是一种一自由度控制器,不具有使系统同时获得良好的目标值跟踪特性和干扰抑制特性的能力,而且不能用于不稳定过程的控制,因此本文提出了一种改进的二自由度IMC方法,仿真结果表明该方法能够使不稳定时滞系统获得良好的目标值跟踪特性和干扰抑制特性,且具有一定的鲁棒性。There are many unstable processes with time-delay in industry. The standard IMC with only one adjustable parameter is a one degree-of-freedom controller. It hasn't the ability to make the system achieve good performance of set-point tracking and disturbance rejection simultaneously and it can't be applied to the control of unstable processes. Therefore, this paper proposes an improved two order of freedom IMC method. The simulation results show that this method can make the systems achieve good performance of set-point tracking, disturbance rejection and robustness.

关 键 词：不稳定时滞过程 内模控制 鲁棒性 

分 类 号：TH7-55[机械工程—仪器科学与技术]