Design of Reduced-order Observers and Output Feedback Controllers for Sampled-data Strict-feedback Systems with Time-varying Sampling Intervals

Abstract

We consider the design of reduced-order observers and output feedback stabilizing controllers for sampled-data strict-feedback systems with time-varying sampling intervals. We introduce a nominal sampling interval to construct the Euler model and we use it to design reduced-order observers, state feedback controllers, and observer-based output feedback controllers. Then we give the sufficient conditions that the designed observers and controllers achieve the desired control performance for the exact model of sampled-data systems.