This work was mainly done while the first author was a PhD student at SUPELEC.
A fault tolerant control scheme based on sensor–actuation channel switching and dwell time†
Article first published online: 26 SEP 2012
Copyright © 2012 John Wiley & Sons, Ltd.
International Journal of Robust and Nonlinear Control
How to Cite
Stoican, F., Olaru, S., Seron, M. M. and De Doná, J. A. (2012), A fault tolerant control scheme based on sensor–actuation channel switching and dwell time. Int. J. Robust Nonlinear Control. doi: 10.1002/rnc.2907
- Article first published online: 26 SEP 2012
- Manuscript Accepted: 29 AUG 2012
- Manuscript Revised: 5 JUL 2012
- Manuscript Received: 12 FEB 2011
- sensor faults;
- fault tolerant scheme;
- switching systems;
- dwell time;
- invariant sets
The present paper proposes a switching control scheme for a plant with multiple sensor–estimator/control–actuator pairs. The scheme is shown to handle the specific stability problems originated by the switching between the different feedback loops and accommodate to faults in the measurement (sensors) channels. The main contribution is a fault tolerant switching scheme with stability guarantees assured by a pre-imposed dwell time. The detection and the fault tolerance capabilities are achieved through the separation of sets associated with suitable residual signals corresponding to healthy and faulty functioning. Another contribution of the paper resides in a recovery technique for the post-fault reintegration of the biased estimations. This technique makes use of a virtual sensor whose associated estimation, based on an optimization procedure, minimizes the recovery time. Copyright © 2012 John Wiley & Sons, Ltd.