Output-Feedback Adaptive Control of Discrete-Time Systems with Unmodeled, Unmatched, Inaccessible Nonlinearities

摘要

We present a numerical investigation of output-feedback discrete-time adaptive control for a class of nonlinear systems. Systems with unknown nonlinearities that may be unmatched with the control are considered. The unknown nonlinearity is assumed to be inaccessible in the sense that it is a function of states that are not measured. For these systems, retrospective cost adaptive control is used for output-feedback stabilization, command following, and disturbance rejection.