Synthesis of a nonlinear control system for disturbance rejection in periodic process

To begin with, two advanced nonlinear model-based control design methods are compared in view of industrial applications. The nonlinear repetitive control model and gain-scheduling control approach are actually based on the polynomial feedback linearization formalism and on a non-Lyapunov method for the estimation of the attraction domains. Again, an input control which guarantees closeness and swiftness along a desired trajectory is consequently constructed. Accordingly, the comparative evaluation is carried out on a CSTR reactor model. Based on an analysis of simulation scenarios, the synthesized controller is validated with respect to trajectory tracking performance and implementation issues. Last of all, our results are illustrated via a numerical simulation.