A Second-Order Sliding Mode Observer for Fault Detection and Isolation of Turbocharged SI Engines

Salehi, R ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1109/TIE.2015.2448693
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2015
  4. Abstract:
  5. This paper proposes a novel method for detection and isolation of wastegate (WG) faults in a turbocharged (TC) gasoline engine. This paper starts with a fault effect analysis on the WG faults, including WG stuck open and stuck closed, which is an early step in a detection strategy design. Then, a second-order sliding-mode observer (SOSMO) is proposed to capture the exhaust manifold dynamics. The observer uses experimentally validated engine models to estimate the WG position and a virtual force. The virtual force represents the external disturbances that disrupt the WG operation and enables the proposed SOSMO to estimate the WG position robust to the faults. Using this force, a detection and isolation algorithm is presented and experimentally verified on a modern TC gasoline engine. Test bench results show that the proposed strategy can successfully detect and isolate the two different WG faults
  6. Keywords:
  7. Fuels ; Manifolds ; Valves ; Automobile engine manifolds ; Engines ; Fueling ; Gasoline ; Sliding mode control ; Turbines ; Valves (mechanical) ; External disturbances ; Fault detection and isolation ; Force ; Gasoline engines ; Observers ; Second-order sliding-mode observer ; Strategy designs ; Virtual forces ; Fault detection
  8. Source: IEEE Transactions on Industrial Electronics ; Volume 62, Issue 12 , June , 2015 , Pages 7795-7803 ; 02780046 (ISSN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7131518