Fault-tolerant Control for Nonlinear Systems with Multiple Intermittent Faults and Time-varying Delays
- Resource Type
- Article
- Authors
- Liang Cao; Youqing Wang
- Source
- International Journal of Control, Automation, and Systems, 16(2), pp.609-621 Apr, 2018
- Subject
- 제어계측공학
- Language
- English
- ISSN
- 2005-4092
1598-6446
This study investigates a new fault-tolerant control method for uncertain nonlinear systems with multiple intermittent faults and time-varying delays. The considered intermittent faults appear in sensors and actuators simultaneously. A Markov chain is used to describe the random occurrence and disappearance of intermittent faults. The uncertain nonlinear system with intermittent faults is augmented as a Markovian jump system. By using H-infinity control theory and linear matrix inequality (LMI), we design fault tolerant controllers to make augmented Markovian jump system work steadily. Several sufficient conditions for stochastic stability with given H-infinity performance index and the existence of output-feedback controllers are derived. The effectiveness of the proposed fault-tolerant method is validated by a continuously stirred tank reactor (CSTR).