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

doi:10.1016/j.cjche.2015.01.009

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (8): 1364-1368.DOI: 10.1016/j.cjche.2015.01.009

• 过程系统工程与过程安全 • 上一篇下一篇

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

Zhiyun Zou, Dandan Zhao, Xinghong Liu, Yuqing Guo, Chen Guan, Wenqiang Feng, Ning Guo

China Research Institute of Chemical Defense, Beijing 102205, China

收稿日期:2014-08-30 修回日期:2015-01-12 出版日期:2015-08-28 发布日期:2015-09-26
通讯作者: Zhiyun Zou

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

Zhiyun Zou, Dandan Zhao, Xinghong Liu, Yuqing Guo, Chen Guan, Wenqiang Feng, Ning Guo

China Research Institute of Chemical Defense, Beijing 102205, China

Received:2014-08-30 Revised:2015-01-12 Online:2015-08-28 Published:2015-09-26
Contact: Zhiyun Zou

摘要/Abstract

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 identification ability of its parameter estimation algorithm of NL-PP-STC was analyzed, which was always identifiable 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 pH 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

Abstract: 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 identification ability of its parameter estimation algorithm of NL-PP-STC was analyzed, which was always identifiable 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 pH neutralization process was carried out and good control performance was achieved.

Key words: Nonlinear system, Hammerstein model, Pole placement, Self tuning control, pH control

Zhiyun Zou, Dandan Zhao, Xinghong Liu, Yuqing Guo, Chen Guan, Wenqiang Feng, Ning Guo. Pole-placement self-tuning control of nonlinear Hammerstein system and its application to pH process control[J]. Chinese Journal of Chemical Engineering, 2015, 23(8): 1364-1368.

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

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

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