Observer Design and Observer-Based Robust H ∞ Feedback Control for Positive Delta Operator Systems with Time-Delays
2018
This paper focuses on observer and observer-based robust $H$ ∞ feedback controller design for positive delta operator systems with time-delays. First of all, a positive observer is designed to estimate the states of the proposed positive system, which is a Luenberguer-type and ensures the estimation to be nonnegative at any time. Moreover, an observer-based robust $H$ ∞ feedback control problem is considered for further study. New sufficient conditions for the existence of the desired controller are derived as LMIs such that the resulting closed-loop system is positive and asymptotically stable simultaneously. Finally, a simulation example is provided to demonstrate the effectiveness of the proposed approach.
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