Fault Detection in Nuclear Systems Using Sliding Mode Observers

Ablay G., Aldemir T.

NUCLEAR SCIENCE AND ENGINEERING, vol.173, no.1, pp.82-98, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 173 Issue: 1
  • Publication Date: 2013
  • Doi Number: 10.13182/nse11-43
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.82-98
  • Abdullah Gül University Affiliated: Yes


The use of sliding mode observers as a model-based method is proposed for robust fault detection and isolation in linear and nonlinear nuclear systems. A sliding mode output observer and a sliding mode state observer are designed and applied to a U-tube steam generator model, a coupled nonlinear reactor model, and a pressurizer model to detect additive and multiplicative faults in the presence of uncertainties and measurement noise. Numerical results for both steady-state and transient responses of the example systems are presented to illustrate the effectiveness of the proposed method.