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Active fault tolerant control for nonlinear systems with simultaneous actuator and sensor faults

Sami, Montadher; Patton, Ron J.

Authors

Montadher Sami

Abstract

The goal of this paper is to describe a novel fault tolerant tracking control (FTTC) strategy based on robust fault estimation and compensation of simultaneous actuator and sensor faults. Within the framework of fault tolerant control (FTC) the challenge is to develop an FTTC design strategy for nonlinear systems to tolerate simultaneous actuator and sensor faults that have bounded first time derivatives. The main contribution of this paper is the proposal of a new architecture based on a combination of actuator and sensor Takagi-Sugeno (T-S) proportional state estimators augmented with proportional and integral feedback (PPI) fault estimators together with a T-S dynamic output feedback control (TSDOFC) capable of time-varying reference tracking. Within this architecture the design freedom for each of the T-S estimators and the control system are available separately with an important consequence on robust L₂ norm fault estimation and robust L₂ norm closed-loop tracking performance. The FTTC strategy is illustrated using a nonlinear inverted pendulum example with time-varying tracking of a moving linear position reference. Keywords

Publication Date Dec 1, 2013
Journal International journal of control, automation and systems
Print ISSN 1598-6446
Electronic ISSN 2005-4092
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 11
Issue 6
Pages 1149-1161
Institution Citation Sami, M., & Patton, R. J. (2013). Active fault tolerant control for nonlinear systems with simultaneous actuator and sensor faults. International journal of control, automation, and systems, 11(6), 1149-1161. https://doi.org/10.1007/s12555-013-0227-1
DOI https://doi.org/10.1007/s12555-013-0227-1
Keywords Active fault tolerant control; Dynamic output feedback control; Fault estimation; LMI formulation; Tracking control; T–S fuzzy systems
Publisher URL http://link.springer.com/article/10.1007%2Fs12555-013-0227-1
Copyright Statement ©2015 University of Hull
Additional Information Author's accepted manuscript of article published in: International journal of control, automation and systems, 2013, v.11, issue 6. The final publication is available at Springer via http://dx.doi.org/10.1007/s12555-013-0227-1

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