Extended dynamics observer for linear systems with disturbance

This paper aims at designing observer for single-input-single-output (SISO) linear finite-dimensional systems corrupted by general disturbances. A new observer, referred to as extended dynamics (EDO), is proposed estimate both state and disturbance simultaneously. The only assumption the design that plant with unknown observable. treated combination of high-gain internal model contained in dynamics. main advantage developed method lies maximum utilization prior information disturbance. more accurate we have, better performance would be. well-posedness EDO established theoretical results are validated numerical simulations.