A disturbance observer-based control scheme is proposed in this paper to deal with the attitude stabilization problems of spacecraft subjected external disturbances, parameter uncertainties, and input nonlinearities. Particularly, approach addresses dead-zone issue, a non-smooth nonlinearity affiliated that significantly increases controller design difficulties. novel nonlinear observer (NDO) d...

A novel control scheme for the active steering of railway vehicles is presented in the paper using disturbance observer based control (DOBC) techniques. In contrast to existing DOBC schemes which are mainly for singleinput-single-output (SISO) systems and designed by trial and error, a new DOBC technique for multi-input-multi-output (MIMO) systems is developed. This is achieved by reforming the...

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 dyna...