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fault-tolerant-control-systems
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Design of a fault tolerated intelligent cntrol system for a nuclear reactor power control: Using extended Kalman filter
, Article Journal of Process Control ; Vol. 24, issue. 7 , 2014 , pp. 1076-1084 ; ISSN: 09591524 ; Salarieh, H ; Vosoughi, N ; Sharif University of Technology
Abstract
In this paper an approach based on system identification is used for fault detection in a nuclear reactor. A continuous-time Extended Kalman Filter (EKF) is presented, which allows the parameters of the nonlinear system to be estimated. Also a fault tolerant control system is designed for the nuclear reactor during power changes operation. The proposed controller is an adaptive critic-based neuro-fuzzy controller. Performance of the controller in terms of transient response and robustness against failures is very good and considerable
Design of a fault tolerated intelligent control system for load following operation in a nuclear power plant
, Article International Journal of Electrical Power and Energy Systems ; Volume 78 , 2016 , Pages 864-872 ; 01420615 (ISSN) ; Vosoughi, N ; Salarieh, H ; Sharif University of Technology
Elsevier Ltd
Abstract
Fault detection has always an important role in maintaining the system stability and assuring satisfactory and safe operation. In this paper a method based on system identification is used for fault detection on a nuclear reactor. The combination of Extended Kalman Filter and recursive Least Square are used to identify the system parameters. Another goal of this paper is design of a fault tolerant control system for a nuclear reactor during power change operation. The proposed controller is an adaptive neuro-fuzzy controller based on emotional learning. Performance of the controller in term of transient response and robustness against failure is very good and outstanding
A unified framework for passive–active fault-tolerant control systems considering actuator saturation and L∞ disturbances
, Article International Journal of Control ; 2017 , Pages 1-11 ; 00207179 (ISSN) ; Haeri, M ; Sharif University of Technology
Abstract
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...
A unified framework for passive–active fault-tolerant control systems considering actuator saturation and L ∞ disturbances
, Article International Journal of Control ; Volume 92, Issue 3 , 2019 , Pages 653-663 ; 00207179 (ISSN) ; Haeri, M ; Sharif University of Technology
Taylor and Francis Ltd
2019
Abstract
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...