Title :
A Finite Time Unknown Input Observer For Linear Systems
Author :
Raff, Tobias ; Lachner, Florian ; Allgöwer, Frank
Author_Institution :
Inst. for Syst. Theor. & Autom. Control, Stuttgart Univ.
Abstract :
This paper presents a finite time unknown input observer for linear systems, i.e. an observer which estimates the exact state of a linear system with unknown input disturbances in a predefined finite time. Based on recent results in observer design for linear systems, conditions are established to guarantee finite time convergence of the estimation error dynamics. The proposed observer is demonstrated on a DC motor for the estimation of the rotor current and the angular velocity despite an unknown input disturbance in the stator voltage
Keywords :
DC motors; control system synthesis; convergence; linear systems; machine control; observers; DC motor; angular velocity; error dynamics; finite time convergence; finite time unknown input observer design; linear system; rotor current estimation; state estimation; stator voltage; Angular velocity; Convergence; DC motors; Estimation error; Linear systems; Observers; Rotors; State estimation; Stators; Voltage;
Conference_Titel :
Control and Automation, 2006. MED '06. 14th Mediterranean Conference on
Conference_Location :
Ancona
Print_ISBN :
0-9786720-1-1
Electronic_ISBN :
0-9786720-0-3
DOI :
10.1109/MED.2006.328795
