One approach to adaptive control of nonlinear processes

Abstract

The paper deals with the adaptive control of nonlinear processes. The nonlinear model of the plant is approximated by an external linear model with recursively estimated parameters. The 2DOF control system configuration is considered. The presented controller design procedure provides the internal properness and stability of the control system. The asymptotic tracking of a step reference is ensured. In addition, the resulting control law penalizes control input changes. The resulting controller is obtained via solutions of the polynomial Diophantine equations with the right side given by spectral factorizations. The adaptive control is tested on the model of a continuous stirred tank reactor. Copyright (C) 2001 IFAC.