Frequency domain input-output analysis of sliding mode observers

Author

Boiko, Igor ; Fridman, Leonid

Author_Institution

SNC-Lavalin, Calgary, Alta.

fYear

2006

fDate

14-16 June 2006

Abstract

The sliding mode (SM) observer dynamics is analyzed in the frequency domain. It is shown that the SM observer is essentially a relay feedback-feedforward system. It is feedback with respect to the measured variable of the system being observed, with the feedforward being the control applied to the system observed. Having noted this, the input-output properties of observer dynamics are analyzed with the use of the locus of a perturbed relay system (LPRS) method. The performance of the observer is assessed via the use of the frequency response techniques. An example of performance analysis of the observer dynamics in the frequency domain is given

Keywords

asymptotic stability; control system analysis; feedback; feedforward; frequency response; frequency-domain analysis; observers; relay control; variable structure systems; frequency domain input-output analysis; frequency response; performance analysis; perturbed relay system; relay feedback-feedforward system; sliding mode observer dynamics; Control systems; Feedback; Frequency domain analysis; Frequency response; Observers; Relays; Samarium; Servomechanisms; Sliding mode control; State estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2006

Conference_Location

Minneapolis, MN

Print_ISBN

1-4244-0209-3

Electronic_ISBN

1-4244-0209-3

Type

conf

DOI

10.1109/ACC.2006.1656619

Filename

1656619