Filter for detecting and isolating faults for a nonlinear system

L. Giovanini, A. Dutka

Research output: Contribution to conferencePaper

Abstract

In the paper the problem of detecting and isolating multiple faults for nonlinear systems is considered. A strategy of state filtering is derived in order to detect and isolate multiple faults which appear simultaneously or sequentially in a discrete time nonlinear systems with unknown inputs. For the considered system for which a fault isolation condition is fulfilled the proposed method can isolate p simultaneous faults with at least p+q output measurements, where q is the number of unknown inputs or disturbances. A reduced output residual vector of dimension p+q is generated and the elements of this vector are decoupled in a way that each element of the vector is associated with only one fault or unmeasured input.
LanguageEnglish
Number of pages6
Publication statusPublished - Jul 2003
EventSafe Processes 2003 - Washington, United States
Duration: 1 Jul 2003 → …

Conference

ConferenceSafe Processes 2003
CountryUnited States
CityWashington
Period1/07/03 → …

Fingerprint

Nonlinear systems

Keywords

  • filter
  • detecting
  • isolating faults
  • nonlinear system
  • analytical redundancy
  • unbiased
  • directional residuals
  • dynamic observers

Cite this

Giovanini, L., & Dutka, A. (2003). Filter for detecting and isolating faults for a nonlinear system. Paper presented at Safe Processes 2003, Washington, United States.
Giovanini, L. ; Dutka, A. / Filter for detecting and isolating faults for a nonlinear system. Paper presented at Safe Processes 2003, Washington, United States.6 p.
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Giovanini, L & Dutka, A 2003, 'Filter for detecting and isolating faults for a nonlinear system' Paper presented at Safe Processes 2003, Washington, United States, 1/07/03, .

Filter for detecting and isolating faults for a nonlinear system. / Giovanini, L.; Dutka, A.

2003. Paper presented at Safe Processes 2003, Washington, United States.

Research output: Contribution to conferencePaper

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AU - Dutka, A.

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AB - In the paper the problem of detecting and isolating multiple faults for nonlinear systems is considered. A strategy of state filtering is derived in order to detect and isolate multiple faults which appear simultaneously or sequentially in a discrete time nonlinear systems with unknown inputs. For the considered system for which a fault isolation condition is fulfilled the proposed method can isolate p simultaneous faults with at least p+q output measurements, where q is the number of unknown inputs or disturbances. A reduced output residual vector of dimension p+q is generated and the elements of this vector are decoupled in a way that each element of the vector is associated with only one fault or unmeasured input.

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KW - detecting

KW - isolating faults

KW - nonlinear system

KW - analytical redundancy

KW - unbiased

KW - directional residuals

KW - dynamic observers

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M3 - Paper

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Giovanini L, Dutka A. Filter for detecting and isolating faults for a nonlinear system. 2003. Paper presented at Safe Processes 2003, Washington, United States.