Functional observers are the major alternative to many practical estimation problems where
full-order observers cannot be used. This paper introduces a generalized approach to …

The design of dynamic H∞ observer (DO) for non-linear Lipschitz systems with multiple time-
varying delays and disturbances is studied. Sufficient conditions for the existence of these …

In this article, we address the problem of designing an observer for a class of nonlinear time
delay systems in descriptor form, in both discrete-time and continuous-time cases. We …

In this article, an observer with delay-dependent stability conditions has been presented for
time delay systems with unknown inputs, where the time delay terms exist in the state and …

Designing functional observers for time-delay systems is an important practical research
topic. However, the performance regulation of those observers and their robustness against …

This paper investigates the H∞ reduced-order observer design problem for a class of
nonlinear systems with interval time-varying delay which satisfies the quadratically inner …

In this paper, we address the problem of observer design for a class of Lipschitz nonlinear
discrete-time systems with time-delay. The main contribution lies in the use of a new …

H∞ functional observer design for one-sided Lipschitz nonlinear systems with time-delay is
investigated. The existence conditions of the gain matrices of the H∞ functional observer …

Issues of observer design for a class of Lipschitz nonlinear discrete-time systems with time-
delay and disturbance input are addressed, where the Lipschitz condition is expressed in a …

This paper investigates the H∞ observer design problem for a class of nonlinear systems
with interval time-varying delays and satisfying the one-sided Lipschitz condition and the …