SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (4): 395-400.DOI: 10.1016/S1004-9541(13)60479-6

• 过程系统工程与过程安全 • 上一篇    下一篇

Nonlinear Model Algorithmic Control of a pH Neutralization Process

邹志云, 于蒙, 王志甄, 刘兴红, 郭宇晴, 张风波, 郭宁   

  1. Research Institute of Pharmaceutical Chemistry, Beijing 102205, China
  • 收稿日期:2012-06-10 修回日期:2012-10-17 出版日期:2013-04-28 发布日期:2013-04-26
  • 通讯作者: ZOU Zhiyun

Nonlinear Model Algorithmic Control of a pH Neutralization Process

ZOU Zhiyun, YU Meng, WANG Zhizhen, LIU Xinghong, GUO Yuqing, ZHANG Fengbo, GUO Ning   

  1. Research Institute of Pharmaceutical Chemistry, Beijing 102205, China
  • Received:2012-06-10 Revised:2012-10-17 Online:2013-04-28 Published:2013-04-26

摘要: Control of pH neutralization processes is challenging in the chemical process industry because of their inherent strong nonlinearity. In this paper, the model algorithmic control (MAC) strategy is extended to nonlinear processes using Hammerstein model that consists of a static nonlinear polynomial function followed in series by a linear impulse response dynamic element. A new nonlinear Hammerstein MAC algorithm (named NLH-MAC) is presented in detail. The simulation control results of a pH neutralization process show that NLH-MAC gives better control performance than linear MAC and the commonly used industrial nonlinear propotional plus integral plus derivative (PID) controller. Further simulation experiment demonstrates that NLH-MAC not only gives good control response, but also possesses good stability and robustness even with large modeling errors.

关键词: model algorithmic control, nonlinear model predictive control, Hammerstein model, pH neutralization process, control simulation

Abstract: Control of pH neutralization processes is challenging in the chemical process industry because of their inherent strong nonlinearity. In this paper, the model algorithmic control (MAC) strategy is extended to nonlinear processes using Hammerstein model that consists of a static nonlinear polynomial function followed in series by a linear impulse response dynamic element. A new nonlinear Hammerstein MAC algorithm (named NLH-MAC) is presented in detail. The simulation control results of a pH neutralization process show that NLH-MAC gives better control performance than linear MAC and the commonly used industrial nonlinear propotional plus integral plus derivative (PID) controller. Further simulation experiment demonstrates that NLH-MAC not only gives good control response, but also possesses good stability and robustness even with large modeling errors.

Key words: model algorithmic control, nonlinear model predictive control, Hammerstein model, pH neutralization process, control simulation