| Summary: | The paper deals with two methods of hybrid adaptive control of the nonlinear system represented by the plug-flow tubular chemical reactor. The mathematical model of this type of technological processes is described by the set of partial differential equations which were solved numerically by the finite difference method and Runge-Kutta’s method. The adaptivity of the controller is satisfied by the recursive identification of the external linear model as a linear representation of the originally high nonlinear controlled system. The first method uses well known Pole-placement method and the second is based on the more sophisticated LQ approach. The advantage of these method is that both have tuning parameter which can affect control results. Although the controlled system has highly nonlinear behavior, used adaptive controller has good results. © 2016, North Atlantic University Union. All rights reserved.
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