Performance-Based Fault-Tolerant Control Uniformly Accommodating Multiple Levels of Actuation Failures

Most existing fault-tolerant control schemes either are contingent upon timely and accurate fault identification or need to be redesigned whenever the types/phases of actuator failures change, rendering the control design rather complex. In this work, a dynamic hardware redundancy technique with a p...

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Bibliographic Details
Published in:IEEE transactions on automatic control 2024-11, Vol.69 (11), p.8018-8025
Main Authors: Cao, Ye, Wang, Xinjun, Ma, Yajing, Cao, Jianfu, Song, Yongduan
Format: Article
Language:English
Subjects:
Actuation
Actuator failure
Actuator failures
Actuators
Control design
Extreme values
Failure
Fault tolerance
Fault tolerant systems
fault-tolerant control
Fuzzy control
Fuzzy logic
Fuzzy systems
Hardware
Neural networks
performance recovery
Phases
prescribed performance
Redundancy
Switches
Termination of employment
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Summary:Most existing fault-tolerant control schemes either are contingent upon timely and accurate fault identification or need to be redesigned whenever the types/phases of actuator failures change, rendering the control design rather complex. In this work, a dynamic hardware redundancy technique with a performance-based trivial fault detector is proposed to accommodate multiple levels of actuator failures, upon which a unified performance-based fault-tolerant control scheme is developed irrespective of different phases of actuator failures. The proposed fault-tolerant control exhibits several salient features, which include the following: by choosing appropriate performance functions, the controller is developed under a unified control structure against different actuation phases ranging from healthy actuation and moderate failure actuation to post extreme failure actuation; the faulty actuator is replaced with the backup one only in the event of extreme failures, avoiding the unnecessary replacement during moderate actuation failure; and without the need for neural networks or fuzzy systems based approximation, the resultant control scheme is simple in structure and inexpensive in computation.
ISSN:0018-9286
1558-2523
DOI:10.1109/TAC.2024.3405816