Nonlinear versus Ordinary Adaptive Control of Continuous Stirred-Tank Reactor

Abstract EN

Unfortunately, the major group of the systems in industryhas nonlinear behavior and control of such processes with conventionalcontrol approaches with fixed parameters causes problems and suboptimal or unstable control results.

An adaptive control is one way to how wecan cope with nonlinearity of the system.

This contribution comparesclassic adaptive control and its modification with Wiener system.

Thisconfiguration divides nonlinear controller into the dynamic linear part andthe static nonlinear part.

The dynamic linear part is constructed withthe use of polynomial synthesis together with the pole-placement methodand the spectral factorization.

The static nonlinear part uses static analysis of the controlled plant for introducing the mathematical nonlineardescription of the relation between the controlled output and the changeof the control input.

Proposed controller is tested by the simulationson the mathematical model of the continuous stirred-tank reactor withcooling in the jacket as a typical nonlinear system.