Input/output linearization control with two-degree-of-freedom structure for uncertain processes

In this work, a new method to control the processes with the unmeasured input disturbance and random noise parametric uncertainty is proposed. The control structure of two-degree-of-freedom is used for enhancing the setpoint regulation and the load disturbance rejection. The tracking controller is designed by input/output linearization technique with the disturbance-free model. Based on the high gain technique, the disturbance rejection controller uses the difference between estimated and the actual outputs to eliminate the effect of the uncertainty. Simulation studies have been constructed to evaluate the control performance of the proposed control method, which is applied through the applications of a continuous stirred tank reactor that exhibits uncertainty.