多变量极点配置自校正Smith控制器及其应用

本文根据许多工业被控过程具有大纯滞后的特点,将自校正调节器与Smith预估器相结 合,给出一种多变量极点配置自校正Smith控制算法.该算法结构简单,不仅能对输出进行预 报和无偏跟踪,而且适用于非最小相位系统.该算法已成功地应用于太原钢铁公司轧辊罩式 退火炉微机自适应群控系统,实际运行结果表明控温精度和炉内温度场均匀度均在±3℃以 内,远比常规PID仪表的控温效果好.

Multivariable Pole Assignment Self-Tuning Smith Controller and its Application

By combining self-tuning controller with Smith-predictor, a multivariable pole assignment self-tuning Smith controller is proposed for industrial processes with long time delay. The proposed controller not only can predict the process output and adapt to the control of non-minimum phase system but also has an asymptotic servo property. Its structure is simple. The algorithm has been used to control a group of cover annealing furnaces with microcomputer in an iron and steel company. The control accuracy and temperature distribution nonuni-fortuity in the annealing furnace are within ±3°C.