Observer Design by Using a New Output-Based Dynamic Extension Technique

This paper deals with the observer design for continuous-time nonlinear systems with external disturbances. It suggests a new observer structure that relies on an output-based dynamic extension strategy enabling the state observer to be less affected by measurement noise. The proposed observer is based on new Linear Matrix Inequality (LMI) condition guaranteeing the Input-to-State Stability (ISS) property of the estimation error.