ZOU Zhiyun, GOU Yuqing, WANG Zhizhen, et al. Nonlinear Hammerstein model predictive control strategy and its application to pH neutralization process[J]. CIESC Journal, 2012, (12): 3965-3970.
ZOU Zhiyun, GOU Yuqing, WANG Zhizhen, et al. Nonlinear Hammerstein model predictive control strategy and its application to pH neutralization process[J]. CIESC Journal, 2012, (12): 3965-3970.DOI: 10.3969/j.issn.0438-1157.2012.12.032.
提出了一套新的非线性Hammerstein MPC 控制策略(nonlinear Hammerstein predictive control
NLHPC)。pH中和过程控制仿真和控制实验表明
NLHPC的控制结果好于工业上常用的非线性 PID(nonlinear PID
NL-PID)控制器。
Abstract
Industrial processes usually contain complex nonlinearities.For example
the control of pH neutralization processes is a challenging problem in the chemical process industry because of their inherent strong nonlinearity.In this paper
the model predictive control(MPC)strategy is extended to a nonlinear process using Hammerstein model that consists of a static nonlinear polynomial function followed in series by a linear difference equation dynamic element.The calculation strategy of optimal control output based on the static nonlinear polynomial function of the Hammerstein model is presented in detail.Thus a new nonlinear Hammerstein predictive control strategy(NLHPC)is developed.Simulation and control experiments of a pH neutralization process show that NLHPC gives better control performance than the commonly used industrial nonlinear PID(NL-PID)controller.