Robust fault diagnosis for a class of nonlinear systems

Wang, Zhanshan; Zhang, Huaguang

doi:10.1007/s11768-006-5086-3

Cited by 8 publications

(5 citation statements)

References 13 publications

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“…where " 1 ; " 2 , and " 3 are positive constants. Substituting (12), (13), (14) into (11), it follows that…”

Section: Theoremmentioning

confidence: 99%

“…And in recent years, the design of FD methods for nonlinear systems has received much more attention. Especially, various observer-based FD methods have been introduced for nonlinear uncertain systems such as adaptive observer-based FD [10][11][12][13], high gain observer-based FD [14,15], and sliding mode observer-based FD [16][17][18]. The main idea of the observer-based FD for nonlinear uncertain systems is to obtain residuals, robust thresholds [19,20] and analyze the fault detectability [21,22].…”

Section: Introductionmentioning

confidence: 99%

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Recursive observer‐based fault detection for a class of nonlinear uncertain systems with output constraints

Zhang

Yang

2016

Intl J Robust & Nonlinear

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Summary This paper investigates the fault detection (FD) problem for a class of nonlinear uncertain systems in strict feedback form with an output constraint. The key idea is to design an observer to generate the FD signals and the output estimate, which also satisfies the output constraint. To facilitate constraint handling, the constraints on the output and the output estimate are transformed into the output estimation error constraint. Then, the FD observer is designed in a recursive framework. By employing a barrier Lyapunov function, the output estimation error constraint is incorporated in the last step of the recursive observer design algorithm to prevent constraint violation. It is shown that the output estimation error is uniformly bounded and satisfies the constraint for the fault‐free case. Furthermore, the residual signal is constructed by the output estimation error, and its corresponding bound is used as threshold. Compared with the FD method without considering the constraints, the proposed FD scheme provides a smaller threshold and characterizes a larger set of faults, which can be detected. Finally, simulation results are presented to illustrate the benefits of the proposed FD scheme. Copyright © 2016 John Wiley & Sons, Ltd.

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“…where " 1 ; " 2 , and " 3 are positive constants. Substituting (12), (13), (14) into (11), it follows that…”

Section: Theoremmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recursive observer‐based fault detection for a class of nonlinear uncertain systems with output constraints

Zhang

Yang

2016

Intl J Robust & Nonlinear

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“…Fault detection and accommodation approaches are presented for different systems (Cao and Song, 2020; Gui and Vukovich, 2017; Hu et al, 2018; Liu et al, 2015, 2018; Song et al, 2017; Talebi and Khorasani, 2012; Van et al, 2016; Wang and Zhang, 2006; Xiao et al, 2011, 2017). For instance, assuming that the fault function is known and the derivative of the fault is bounded, a fault diagnosis method is presented for a class of nonlinear systems (Wang and Zhang, 2006). In Liu et al (2015), a fault detection method is proposed for robot manipulators with the assumption of slowly time-varying actuator faults.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear disturbance observer-based fault-tolerant control for flexible teleoperation systems with actuator constraints and varying time delay

Rasouli

Moattari

Forouzantabar

2021

Transactions of the Institute of Measurement and Control

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In this paper, designing a control law for teleoperation systems with flexible-link slave robots in the presence of dynamic uncertainties, disturbances, actuator faults and actuator constraints with time-varying communication delays is addressed. This study proposes a simple anti-saturation nonlinear fault-tolerant controller incorporating a disturbance observer. The attractive features of the proposed controller include the ability to cope with disturbances, avoiding actuators exceeding their usual bounds, and compensating for the actuator faults. Besides which, the controller has a simple structure, does not need a fault detection mechanism, and coordinates the master’s motion speed with the slave’s actuator. A Lyapunov–Krasovskii functional is used to prove the stability and tracking performance of the teleoperation system. The feasibility and efficiency of the proposed controller are corroborated through simulation results.

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“…Two approaches were developed in , namely, the convex linearization approach and iterative approach, to the quantized H ∞ filtering for a class of continuous‐time Markovian jump linear systems with deficient mode information. By introducing adaptive laws in the observer, designed a robust fault detection technique to compensate for state and fault errors concurrently, with the condition of a known upper error bound. A FTC data‐driven scheme was proposed in for the Tennessee Eastman benchmark, which is realized by an adaptive SMO for identifying faults online with an iterative optimization method for system performance enhancement.…”

Section: Introductionmentioning

confidence: 99%

Robust Actuator‐Fault‐Tolerant Control System Based on Sliding‐Mode Observer for Thrust‐Vectoring Aircrafts

Dong

Xiong

2018

Asian Journal of Control

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In this paper, a robust actuator-fault-tolerant control (FTC) system is proposed for thrust-vectoring aircraft (TVA) control. To this end, a TVA model with actuator fault dynamics, disturbances, and uncertain aerodynamic parameters is described, and a local fault detection and identification (FDI) mechanism is proposed to locate and identify faults, which utilizes an adaptive sliding-mode observer (SMO) to detect actuator faults and two SMOs to identify and estimate their parameters. Finally, a fault-tolerant controller is designed to compensate for these actuator faults, disturbances, and uncertain aerodynamic parameters; the approach combines back-stepping control with fault parameters and a high-order SMO. Furthermore, the stability of the entire control system is validated, and simulation results are given to demonstrate the effectiveness and potential for this robust FTC system.

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Robust fault diagnosis for a class of nonlinear systems

Cited by 8 publications

References 13 publications

Recursive observer‐based fault detection for a class of nonlinear uncertain systems with output constraints

Recursive observer‐based fault detection for a class of nonlinear uncertain systems with output constraints

Nonlinear disturbance observer-based fault-tolerant control for flexible teleoperation systems with actuator constraints and varying time delay

Robust Actuator‐Fault‐Tolerant Control System Based on Sliding‐Mode Observer for Thrust‐Vectoring Aircrafts

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