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Design of an unknown input observer for fault diagnosis of non-linear systems with state constraints

Author
Witczak, M.; Puig, V.; Dziekan, L.
Type of activity
Presentation of work at congresses
Name of edition
8th International Symposium on Fault Detection, Supervision and Safety for Technical Processes
Date of publication
2012
Presentation's date
2012-08-30
Book of congress proceedings
SAFEPROCESS 2012. 8th IFAC International Symposium on Fault Detection, Supervision and Safety for Technical Processes
First page
1065
Last page
1070
Repository
http://hdl.handle.net/2117/16632 Open in new window
Abstract
The paper deals with the problem of designing observers for a class of discrete-time nonlinear systems with an unknown input. In particular, with the use of the Lyapunov method, a design procedure of an asymptotically convergent observer is proposed. Moreover, the e ect of decoupling an unknown input is investigated in the light of an undesirable decoupling of possible faults. As a result, a condition for checking an undesirable fault decoupling is provided. Subsequently, it is shown how to empl...
Citation
Witczak, M.; Puig, V.; Dziekan, L. Design of an unknown input observer for fault diagnosis of non-linear systems with state constraints. A: IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes. "SAFEPROCESS 2012. 8th IFAC International Symposium on Fault Detection, Supervision and Safety for Technical Processes". Mexico City: 2012, p. 1065-1070.
Group of research
CS2AC-UPC - Supervision, Safety and Automatic Control
SAC - Advanced Control Systems

Participants

  • Witczak, Marcin  (author and speaker )
  • Puig Cayuela, Vicenç  (author and speaker )
  • Dziekan, L.  (author and speaker )