A predictive control algorithm of integral processes based on state correction and its application
Author(s): QI Lugang, LI Lili, LUAN Zhiye, Lü Wenxiang, HUANG Dexian, Department of Automation, Tsinghua University, Department of Computer Science, China Women’s University
Pages: 685-689
Year: 2016 Issue: 3
Journal: Journal of Chemical Industry and Engineering(China)
Keyword: model-predictive control; process control; parameter estimation; integral process; state correction;
Abstract: For integral processes with large lag, strong dynamic disturbance, the predictive control algorithm based on first-order state correction was proposed. Considering the integral effect of deviation between predictive and actual state, it exerts state correction on the first-order dimension. Thus the controller’s robustness is improved significantly. By simulation experiments, the effectiveness of the state correction algorithm was confirmed. And the algorithm has been adopted for liquid level control of flash tank in a refinery. The practical application results showed that the control effect is outstanding.
Pages: 685-689
Year: 2016 Issue: 3
Journal: Journal of Chemical Industry and Engineering(China)
Keyword: model-predictive control; process control; parameter estimation; integral process; state correction;
Abstract: For integral processes with large lag, strong dynamic disturbance, the predictive control algorithm based on first-order state correction was proposed. Considering the integral effect of deviation between predictive and actual state, it exerts state correction on the first-order dimension. Thus the controller’s robustness is improved significantly. By simulation experiments, the effectiveness of the state correction algorithm was confirmed. And the algorithm has been adopted for liquid level control of flash tank in a refinery. The practical application results showed that the control effect is outstanding.
Related Articles