Sliding mode observers for a class of linear parameter varying systems
Chen, L; Edwards, C; Alwi, H
Date: 4 March 2020
Journal
International Journal of Robust and Nonlinear Control
Publisher
Wiley / International Federation of Automatic Control (IFAC)
Publisher DOI
Abstract
In this paper, a new framework for the synthesis of a class of sliding mode observers for affine linear parameter
varying (LPV) systems is proposed. The sliding mode observer is synthesized by selecting the design freedom via
LMIs. Posing the problem from a small gain perspective allows existing numerical techniques from the ...
In this paper, a new framework for the synthesis of a class of sliding mode observers for affine linear parameter
varying (LPV) systems is proposed. The sliding mode observer is synthesized by selecting the design freedom via
LMIs. Posing the problem from a small gain perspective allows existing numerical techniques from the literature
to be used for the purpose of synthesizing the observer gains. In particular, the framework allows affine parameterdependent Lyapunov functions to be considered for analyzing the stability of the state estimation error dynamics,
to help reduce design conservatism. Initially a variable structure observer formulation is proposed, but by imposing
further constraints on the LMIs, a stable sliding mode is introduced, which can force and maintain the output
estimation error to be zero in finite time. The efficacy of the scheme is demonstrated using an LPV model of
the short period dynamics of an aircraft and demonstrates simultaneous asymptotic estimation of the states and
disturbances.
Engineering
Faculty of Environment, Science and Economy
Item views 0
Full item downloads 0