WEI Minghui, LUO Xionglin, FENG Aixiang. Predictive controller for nonlinear unsymmetrical systems based on control performance comparison[J]. CIESC Journal, 2012, (10): 3183-3188.
WEI Minghui, LUO Xionglin, FENG Aixiang. Predictive controller for nonlinear unsymmetrical systems based on control performance comparison[J]. CIESC Journal, 2012, (10): 3183-3188.DOI: 10.3969/j.issn.0438-1157.2012.10.025.
Some nonlinear systems in production process always show unsymmetrical dynamic characteristics. Theoretical results for these systems
especially for its control are very limited compared with their common occurrence in industry.In this paper
state feedback predictive controller based on the positive/negative linear models was designed to handle the shortage of two separate PID controllers based on positive/negative linear models.At each step of the control law calculation
the positive/negative controllers calculated each control action.The ultimate control action was determined by the comparison of control performance index of the positive/negative controllers.Simulation of pH control showed better control performance than two separate PID controllers.