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 …

The performance of active disturbance rejection control (ADRC) algorithms can be limited in
practice by high-frequency measurement noise. In this article, this problem is addressed by …

The extended state observer (ESO) plays an important role in the design of feedback control
for nonlinear systems. However, its high-gain nature creates a challenge in engineering …

The extended state observer (ESO) is used to estimate both the unmeasurable system states
and acting lumped disturbance. Generally, high gains need to be selected in ESO to achieve …

We propose a peaking-free low-power high-gain observer that preserves the main feature of
standard high-gain observers in terms of arbitrarily fast convergence to zero of the …

The sensitivity of conventional model-predictive control to parametric uncertainties has
made model-free predictive control (MFPC) necessary. MFPC with disturbance rejection …

A new LMI design technique is developed to address the problem of circle criterion-based
ℋ∞ observer design for nonlinear systems. The developed technique applies to both locally …

The electro-hydraulic servo steering system (EHSSS) is the key element to determine the
handling and stability of heavy vehicles. Accurate steering control is challenged due to its …

This paper develops a new high-gain observer design method for nonlinear systems that
has a lower gain compared to the standard high-gain observer. This new observer, called …

This paper deals with the design of a Filtered High Gain Observer (FHGO) for a class of
uniformly observable systems involving uncertainties. The structure of the proposed …