- Title
- Integration of invariant-set-based FDI with varying sampling rate virtual actuator and controller
- Creator
- Osella, Esteban N.; Haimovich, Hernan; Seron, María M.
- Relation
- International Journal of Adaptive Control and Signal Processing Vol. 30, Issue 2, p. 393-411
- Publisher Link
- http://dx.doi.org/10.1002/acs.2551
- Publisher
- John Wiley & Sons
- Resource Type
- journal article
- Date
- 2015
- Description
- We present a new output feedback fault-tolerant control strategy for continuous-time linear systems with bounded disturbances. The strategy combines a digital nominal controller under controller-driven (varying) sampling with virtual actuator (VA)-based controller reconfiguration to compensate for abrupt actuator faults and invariant-set-based fault detection and isolation. 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 fault detection and isolation and 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 operations for any possible sampling rate evolution that may be selected by the controller.
- Subject
- fault-tolerant control; invariant sets; controller-driven sampling; switched systems; networked control
- Identifier
- http://hdl.handle.net/1959.13/1337369
- Identifier
- uon:27829
- Identifier
- ISSN:0890-6327
- Language
- eng
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