Hybrid adaptive LQ control of chemical reactor

Abstract

The paper shows one approach to control of a nonlinear process represented by an isothermal continuous stirred-tank reactor. The hybrid adaptive controller designed with the use of a polynomial synthesis, Linear-Quadratic approach and spectral factorization was used for controlling of the product's concentration via change of the volumetric flow rate of the reactant. An adaptivity of the system is satisfied by the on-line recursive identification of a external linear delta model of the system. The proposed control method satisfies basic control requirements such as. a stability, a disturbance attenuation and a reference signal tracking. All methods are tested by the simulation on the mathematical software MATLAB.