A unified framework for passive–active fault-tolerant control systems considering actuator saturation and L∞ disturbances

Khatibi, M ; Sharif University of Technology

390 Viewed
  1. Type of Document: Article
  2. DOI: 10.1080/00207179.2017.1365172
  3. Abstract:
  4. This paper presents a unified passive–active fault-tolerant control strategy to compensate the loss of actuators’ effectiveness. The proposed approach is capable of handling the system in pre- and post-fault diagnosis intervals by passive and active approaches, respectively. The stability of the designed system is independent of the accuracy of information provided by the fault detection and diagnosis unit, however, a precise estimation could improve the conservation. Actuator saturation and L∞ disturbances effects are considered in the design stage. The trade-off between maximising the domain of attraction and minimising the effects of L∞ disturbances is tackled by developing a non-constant state feedback strategy. The feedback gains are determined by solving an optimisation problem. The proposed method is implemented on a model of Boeing 747 and results are discussed. © 2017 Informa UK Limited, trading as Taylor & Francis Group
  5. Keywords:
  6. Actuator saturation ; Domain of attraction ; Passive fault-tolerant control ; Actuators ; Disturbance rejection ; Economic and social effects ; Fault tolerance ; Fault tolerant computer systems ; Faulting ; Feedback ; Optimization ; State feedback ; Accuracy of information ; Active fault tolerant control ; Active fault tolerant control systems ; Actuator saturations ; Domain of attraction ; Fault detection and diagnosis ; Fault tolerant control ; Optimisation problems ; Fault detection
  7. Source: International Journal of Control ; 2017 , Pages 1-11 ; 00207179 (ISSN)
  8. URL: https://www.tandfonline.com/doi/full/10.1080/00207179.2017.1365172