Title :
HOSM Observer for a Class of Non-Minimum Phase Causal Nonlinear MIMO Systems
Author :
Shtessel, Yuri B. ; Baev, Simon ; Edwards, Christopher ; Spurgeon, Sarah
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alabama, Huntsville, AL, USA
Abstract :
A higher order sliding mode observer is proposed for asymptotic identification of the full state vector and the vector of unknown inputs for MIMO nonlinear causal systems with unstable internal dynamics. The problem is addressed via consistent application of exact higher order sliding mode differentiators in conjunction with the method of stable system center. A numerical example illustrates the performance of the proposed algorithm.
Keywords :
MIMO systems; nonlinear systems; observers; variable structure systems; HOSM observer; asymptotic identification; full state vector; higher order sliding mode observer; nonminimum phase causal nonlinear MIMO system; stable system center; unstable internal dynamics; Algebra; Automatic control; Control systems; Discrete event systems; Linear systems; MIMO; Nonlinear control systems; Nonlinear dynamical systems; Nonlinear systems; Observers; Open loop systems; Robust control; Sliding mode control; State estimation; Vehicle dynamics; Vehicles; Causal; higher order sliding mode (HOSM); nonlinear; nonminimum phase (NMP); observer;
Journal_Title :
Automatic Control, IEEE Transactions on
DOI :
10.1109/TAC.2009.2037478
