Every stabilizing dead-time controller has an observer–predictor-based structure

Every stabilizing dead-time controller has an observer-predictor-based structure

This paper considers the stabilization problem for linear time-invariant (LTI) systems with a single delay h in the feedback loop. Two parametrizations of all stabilizing controllers are derived in terms of a state-space realization of the rational part of the plant. These parametrizations have simple structures and clear interpretations: the first is in the form of a generalized dead-time comp...

Every rayless graph has an unfriendly partition

We prove that every rayless graph has an unfriendly partition.

Has Every Book of the Bible Been Found Among the Dead Sea Scrolls?

On Strongly Stabilizing Controller Synthesis for Time Delay Systems

In this paper, a strongly stabilizing controller design method, proposed earlier for finite dimensional systems, is extended to a class of time delay systems. A special factorization of the plant is done first. Then, an infinite dimensional one-block H∞ control problem is solved using existing techniques. The solution of this H∞ control problem, together with the stable coprime factors of the p...

Robust Constrained Horizon Predictive Controller for Dead Time Systems

This paper presents a constrained horizon predictive controller based on a filtered Smith predictor structure (CHSPPC). The proposed algorithm is particulary appropriate to control dead time systems as it exhibits better robustness than others, specially when errors in the dead time estimation are considered. The tuning of the controller parameters includes a low pass filter that is easy define...