基于TC控制与干扰观测器的Smith预估控制  

Smith Predictive Control Based on TC Control and Disturbance Observer

作　　者：李光[1] 郑恩让[1] 

机构地区：[1]陕西科技大学电气与信息工程学院,西安710021

出　　处：《化工自动化及仪表》2014年第1期1-4,共4页Control and Instruments in Chemical Industry

基　　金：陕西省教育厅项目(11JK0935);陕西科技大学博士科研启动基金资助项目(BJ10-09)

摘　　要：针对传统的Smith预估器在实际工业过程控制中存在鲁棒性和抗扰性差的问题,提出了一种控制结构简单、不依赖于精确数学模型、响应速度可调的鲁棒控制器(TC控制器)与干扰观测器相结合的改进型Smith预估控制。当典型时滞系统的预估器模型时滞参数τm变化±50%时,系统输出仍然平滑而且响应速度快,增强了系统的鲁棒性和抗扰性,明显地改善了控制系统的品质。仿真研究表明该方法对于时滞系统有效、可行。Aiming at poor robustness and anti-disturbance of the traditional Smith predictor in actual industrial process control, a new improved Smith predictor control which having robust controller （TC controller） combined with disturbance observer, boasting of simple control structure and adjustable response speed and independent of precise mathematical model was proposed. When predictor model parameter τm of the typical timedelay system changes 50%, the system output becomes still smooth with fast response, this can enhance the system robustness and disturbance and improve the quality of control system obviously. The simulation results prove this method＇s feasibility and effectiveness to the time-delay system.

关 键 词：SMITH预估器 鲁棒控制器 干扰观测器 时滞系统 

分 类 号：TH861[机械工程—仪器科学与技术]