WANG Zhizhen, ZOU Zhiyun. Nonlinear predictive control strategies of pH neutralization process based on neural networks[J]. CIESC Journal, 2019, 70(2): 678-686
WANG Zhizhen, ZOU Zhiyun. Nonlinear predictive control strategies of pH neutralization process based on neural networks[J]. CIESC Journal, 2019, 70(2): 678-686DOI: 10.11949/j.issn.0438-1157.20181035.
Nonlinear predictive control strategies of pH neutralization process based on neural networks
To solve the control problems of nonlinear process systems
nonlinear model-predictive control algorithms are studied. pH neutralization process is a typical nonlinear process in chemical process systems. In view of the characteristic of pH neutralization process
the entire model of pH neutralization process system and the inverse model of static nonlinear block are established by neural networks. Then two novel nonlinear predictive control strategies are studied based on model-predictive control and Hammerstein model. The neural networks model predictive control (NNMPC)
which is a global solution strategy for nonlinear predictive control systems and nonlinear Hammerstein model predictive control (NLHMPC)
which is a strategy based on two steppes separation control are developed and simulated by MATLAB. Control simulation results show that the NNMPC and NLHMPC control strategies have better performances on set-point tracking and anti-interference control response than PID control. They can give effective control performance to nonlinear processes.
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