Pole-placement self-tuning control of nonlinear Hammerstein system and its application to pH process control  

非线性Hammerstein系统的极点配置自校正控制及其pH过程控制应用（英文）

作　　者：邹志云 赵丹丹 刘兴红 郭宇晴 管臣 冯文强 郭宁 

机构地区：[1]China Research Institute of Chemical Defense

出　　处：《Chinese Journal of Chemical Engineering》2015年第8期1364-1368,共5页中国化学工程学报（英文版）

摘　　要：By taking advantage of the separation characteristics of nonlinear gain and dynamic sector inside a Hammerstein model, a novel pole placement self tuning control scheme for nonlinear Hammerstein system was put forward based on the linear system pole placement self tuning control algorithm. And the nonlinear Hammerstein system pole placement self tuning control(NL-PP-STC) algorithm was presented in detail. The identi fication ability of its parameter estimation algorithm of NL-PP-STC was analyzed, which was always identi fiable in closed loop. Two particular problems including the selection of poles and the on-line estimation of model parameters, which may be met in applications of NL-PP-STC to real process control, were discussed. The control simulation of a strong nonlinear p H neutralization process was carried out and good control performance was achieved.By taking advantage of the separation characteristics of nonlinear gain and dynamic sector inside a Hammerstein model, a novel pole placement self tuning control scheme for nonlinear Hammerstein system was put forward based on the linear system pole placement self tuning control algorithm. And the nonlinear Hammerstein system pole placement self tuning control（NL-PP-STC） algorithm was presented in detail. The identi fication ability of its parameter estimation algorithm of NL-PP-STC was analyzed, which was always identi fiable in closed loop. Two particular problems including the selection of poles and the on-line estimation of model parameters, which may be met in applications of NL-PP-STC to real process control, were discussed. The control simulation of a strong nonlinear p H neutralization process was carried out and good control performance was achieved.

关 键 词：Nonlinear system Hammerstein model Pole placement Self tuning control pH control 

分 类 号：O231[理学—运筹学与控制论]