- Title
- Fault-tolerant control under controller-driven sampling using a virtual actuator strategy
- Creator
- Osella, Esteban; Haimovich, Hernan; Seron, María M.
- Relation
- 2013 3rd Australian Control Conference (AUCC). Proceedings of the 2013 3rd Australian Control Conference (Perth, W.A. 4-5 November, 2013) p. 289-294
- Publisher Link
- http://dx.doi.org/10.1109/AUCC.2013.6697287
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2013
- Description
- We present a new output feedback fault tolerant control strategy for continuous-time linear systems. The strategy combines a digital nominal controller under controller-driven (varying) sampling with virtual-actuator (VA)-based controller reconfiguration to compensate for actuator faults. In the proposed scheme, the controller controls both the plant and the sampling period, and a fault detection mechanism performs controller reconfiguration by engaging in the loop the VA adapted to the diagnosed fault. The VA also operates under controller-driven sampling. Two independent objectives are considered: (a) closed-loop stability with setpoint tracking and (b) controller reconfiguration under faults. Our main contribution is to extend an existing VA-based controller reconfiguration strategy to systems under controller-driven sampling in such a way that if objective (a) is possible under controller-driven sampling (without VA) and objective (b) is possible under uniform sampling (without controller-driven sampling), then closed-loop stability and setpoint tracking will be preserved under both healthy and faulty operation for all possible sampling rate evolutions.
- Subject
- actuators; fault tolerance; fault tolerant systems; switches; steady-state; mercury
- Identifier
- http://hdl.handle.net/1959.13/1337428
- Identifier
- uon:27830
- Identifier
- ISBN:9781479924981
- Language
- eng
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