We review the main design techniques of state observer design for continuous-time
dynamical systems, namely algorithms which reconstruct online the full information of a …

This paper proposes a new method to estimate the state of nonlinear generalized systems
subject to nonlinear algebraic constraints via H∞ observers. Compared with previous …

In this document, we present the main ideas and results concerning high‐gain observers
and some of their applications in control. The introduction gives a brief history of the topic …

Extended state observer (ESO) is a class of high-gain observers and a powerful tool for
output feedback control of uncertain nonlinear systems. In this paper, we propose a new …

In this paper, we develop a novel extended state observer (ESO), in terms of tracking error
only, for output tracking of a class of multi-input multioutput systems with mismatched …

In this paper, we investigate a nonlinear extended state observer (ESO) constructed from
piece-wise smooth functions consisted of linear and fractional power functions. This …

The extended Kalman filter (EKF) is widely used for the integration of the global positioning
system (GPS) and inertial navigation system (INS). It is well known that the EKF performance …

This article focuses on the class of linear systems coupled with a nonlinearity satisfying a
sector bound or a monotonic condition. First, we present a set of sufficient conditions based …

This article presents a novel observer-based fault-tolerant controller framework for a class of
nonideal time-varying high-order fully actuated systems (HOFASs). The HOFAS theory is an …

This article proposes an observer-based methodology to detect and mitigate false data
injection attacks in collaborative dc microgrids. The ability of observers to effectively detect …