Robust-Control Of Binary Distillation-Columns

Design of robust multivariable nonlinear feddback controllers for dual composition control in a distillation column is proposed. The performance of the control system is evaluated by simulation for larger disturbances in feed composition and feed flow rates. The robustness of the control system is evaluated for 20 percent perturbations in relative volatility and Murphee stage efficiency. The design procedure of the proposed controller is easier and the performance of the controller is robust to disturbances and to modelling errors.