Adaptive predictive PID control scheme of ideal internal thermally coupled distillation columns

Internal thermally coupled distillation column (ITCDIC) is the frontier of energy saving research in distillation columns. Its adaptive and predictive PID (AP-PID) control scheme is proposed. The corresponding model parameter identification method is then given. It combines the advantages of both on and off line identifications. The Benzene and Toluene system is adopted for the illustrative example. The rigorous simulation and detailed comparative research with the previous predictive PID (P-PID) control counterpart arc carried out. AP-PID has quicker respond speed than P-PID in both servo control and regulatory control. The results demonstrate the prominent effectiveness of this control strategy.