CONTROL OF TEMPERATURE INSIDE PLUG-FLOW TUBULAR CHEMICAL REACTOR USING 1DOF AND 2DOF ADAPTIVE CONTROLLERS

The goal of this contribution is to present simulation results of the adaptive control of the tubular chemical reactor as a typical equipment used in the industry. The mathematical model of the tubular reactor is described by a set of nonlinear partial differential equations. The numerical solution of such model is not trivial but the combination of the Finite difference and Rung-Kutta's method can be used for this task. The adaptivity of the controller is satisfied by the recursive identification of the external linear model as a linear representation of the originally nonlinear system. Control synthesis employs a polynomial approach together with the connection to the Pole-placement method and the spectral factorization satisfies basic control requirements and provides not only the structure of the controller but also computational relations. There are compared results for control systems with one degree-of-freedom (1DOF) and two degrees-of-freedom (2DOF).