DISCRETE-TIME MODEL-REFERENCE ADAPTIVE-CONTROL FOR NONMINIMUM-PHASE SYSTEMS WITH DISTURBANCES

This paper presents a new design method of discrete-time model referen ce adaptive control for nonminimum phase systems with disturbances. It is assumed that the disturbances are described by a polynomial functi on of time with known degree and unknown coefficients. The proposed sc heme uses only input and output data and the existence of bounds for a ll signals is proved, which assures the output error convergence to ze ro. Finally, the results of computer simulation are presented to illus trate the effectiveness of the proposed method.