Iterative learning dual-mode control of exothermic batch reactors

Control strategies of the on–off type can be used to bring batch reactor temperature to the set point in minimum time. A practical controller implementing this control strategy in industry is the dual-mode controller. When well-tuned, this controller shows excellent control performances for various batch reactors. However, the dual-mode controller may be sensitive to process changes. For improved robustness, the dual-mode controller is modified and equipped with an iterative learning technique. This iterative learning dual-mode controller requires minimal information from the previous batch runs and can be incorporated in the existing dual-mode controller with minimal effort.