Title :
State observation for quasi-linear uncertain systems by nested high-order sliding mode observer
Author :
Davila, Jorge ; Fridman, Leonid ; Pisano, Alessandro ; Usai, Elio
Author_Institution :
Gen. Direction of Acad. Comput. Services, Nat. Autonomous Univ. of Mexico (UNAM), Mexico City, Mexico
Abstract :
The problem of observation of some classes of quasilinear uncertain systems is studied in the framework of unknown input observer theory. High-order sliding-mode observers are designed for the considered classes of systems. Necessary conditions for the convergence of the proposed observers are given in terms of restrictions on the system matrices. A new observation scheme, based on the error injection by high-order sliding-mode control, is proposed. Simulations confirm the theoretical results.
Keywords :
linear systems; observers; uncertain systems; variable structure systems; high-order sliding mode observer; high-order sliding-mode control; observer theory; quasilinear uncertain system; state observation; system matrix; Control systems; Convergence; Estimation error; Filtration; Observability; Observers; Robustness; Sampling methods; Sliding mode control; Uncertain systems;
Conference_Titel :
Control Applications, (CCA) & Intelligent Control, (ISIC), 2009 IEEE
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4244-4601-8
Electronic_ISBN :
978-1-4244-4602-5
DOI :
10.1109/CCA.2009.5281037
