Adaptive fault estimation and fault‐tolerant tracking control for a class of non‐linear systems with output constraints

Wu, Li‐Bing; Wang, Heng; He, Xiao; Zhang, Daqing; Huang, Sheng‐Juan

doi:10.1049/iet-cta.2017.1007

Cited by 15 publications

(29 citation statements)

References 33 publications

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“…for the error system (13), similar to the proof of [41,Lemma 1], we can obtain that the fault estimator ( 9)- (12) guarantee that the following inequality holds…”

Section: Adaptive Prescribed Performance Fault Estimator Designmentioning

confidence: 65%

Adaptive Prescribed Performance Fault Estimation and Accommodation for a Class of Stochastic Nonlinear Systems

Yin

Wang

et al. 2019

IEEE Access

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This paper studies the problem of adaptive fault estimation and accommodation for a class of stochastic nonlinear systems with unknown time-varying faults. Different from existing fault estimation methods, a novel adaptive prescribed performance fault estimator is designed, which guarantees that the fault estimation error is confined within a pre-set region, and a better estimation accuracy is obtained. The designed fault-tolerant tracking controller is capable of attenuating the effect of faults through using backstepping techniques. Furthermore, the proposed method guarantees that all the error signals of the closedloop system be bounded in probability, the fault estimation error and output tracking error both converge to desired neighborhoods of origin in the sense of quadratic mean value. Finally, the simulation results are provided to verify the method proposed in this paper. INDEX TERMSAdaptive fault estimation, fault-tolerant control, stochastic nonlinear systems, backstepping technique.

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“…for the error system (13), similar to the proof of [41,Lemma 1], we can obtain that the fault estimator ( 9)- (12) guarantee that the following inequality holds…”

Section: Adaptive Prescribed Performance Fault Estimator Designmentioning

confidence: 65%

Adaptive Prescribed Performance Fault Estimation and Accommodation for a Class of Stochastic Nonlinear Systems

Yin

Wang

et al. 2019

IEEE Access

Self Cite

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“…Example 2. Consider the following single-link robot systems cited in [20,25], the uncertain nonlinear systems with fault is described asẋ…”

Section: Simulation Studiesmentioning

confidence: 99%

Observer‐based adaptive fault estimation and fault‐tolerant tracking control for a class of uncertain nonlinear systems

Zhang

2020

IET Control Theory & Appl

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This paper considers the problem of adaptive fault estimation and fault‐tolerant tracking control for a class of uncertain nonlinear systems with model uncertainty and process fault. By utilising the approximation abilities of fuzzy logic systems, a novel fault estimation fuzzy observer is designed to estimate the unmeasured states, nonlinear functions and process fault. Based on backstepping technologies, a adaptive fuzzy fault‐tolerant controller with the adaptive updated laws is established, which can not only ensure the prescribed tracking performances, but also effectively compensate the process fault. It is proved that all the closed‐loop signals of systems are uniformly ultimately bounded and the tracking errors can constrain to the prescribed bounds. Finally, simulation results can verify the efficiency of the proposed approach.

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“…For example, the speed and the acceleration of a vehicle should be constrained because of the hardware limitations and the security of passengers; the upper bounds for the admissible cell temperature should be constrained for the high‐temperature fuel cell [20]. Therefore, the effective handling of constraints has drawn great attention of scholars [20–30]. Generally speaking, the constrained control problem includes three types: input constraint, output constraint, and state constraint.…”

Section: Introductionmentioning

confidence: 99%

Adaptive finite‐time tracking control for time‐varying output constrained non‐linear systems with unmatched uncertainties

Wang

2019

IET Control Theory & Applications

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Adaptive fault estimation and fault‐tolerant tracking control for a class of non‐linear systems with output constraints

Cited by 15 publications

References 33 publications

Adaptive Prescribed Performance Fault Estimation and Accommodation for a Class of Stochastic Nonlinear Systems

Adaptive Prescribed Performance Fault Estimation and Accommodation for a Class of Stochastic Nonlinear Systems

Observer‐based adaptive fault estimation and fault‐tolerant tracking control for a class of uncertain nonlinear systems

Adaptive finite‐time tracking control for time‐varying output constrained non‐linear systems with unmatched uncertainties

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