Adaptive fault‐tolerant control for feedback linearizable systems with an aircraft application

Gao, Gang; Wang, Jinzhi; Wang, Xianghua

doi:10.1002/rnc.3143

Cited by 18 publications

(11 citation statements)

References 45 publications

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“…• FTC design for nonlinear systems: several strategies have been proposed to deal with nonlinear systems, such as feedback linearization [107], nonlinear dynamic inversion [78], backstepping [360] and neural networks [365] among others. However, as stated by [372], the development of effective design methods for dealing with nonlinear FTCS issues is still an open research problem.…”

Section: Recent Developments Of Fault Tolerant Controlmentioning

confidence: 99%

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Rotondo¹

2018

Springer Theses

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This thesis presents some contributions to the state-of-the-art of the fields of gainscheduling and fault tolerant control (FTC).In the area of gain-scheduling, the connections between the linear parameter varying (LPV) and Takagi-Sugeno (TS) paradigms are analyzed, showing that the methods for the automated generation of models by nonlinear embedding and by sector nonlinearity, developed for one class of systems, can be easily extended to deal with the other class. Then, two measures, based on the notions of overboundedness and region of attraction estimates, are proposed in order to compare different models and choose which one can be considered the best one. Later, the problem of designing state-feedback controllers for LPV systems has been considered, providing two main contributions. First, robust LPV controllers that can guarantee some desired performances when applied to uncertain LPV systems are designed, by using a double-layer polytopic description that takes into account both the variability due to the varying parameter vector and the uncertainty. Then, the idea of designing the controller in such a way that the required performances are scheduled by the varying parameters is explored, which provides an elegant way to vary online the behavior of the closed-loop system. In both cases, the problem reduces to finding a solution to a finite number of linear matrix inequalities (LMIs), which can be done efficiently using the available solvers.In the area of fault tolerant control, the thesis first shows that the aforementioned double-layer polytopic framework can be used for FTC, in such a way that different strategies (passive, active and hybrid) are obtained depending on the amount of available information. Later, an FTC strategy for LPV systems that involves a reconfigured reference model and virtual actuators is developed. It is shown that by including the saturations in the reference model equations, it is possible to design a model reference FTC system that automatically retunes the reference states whenever the system is affected by saturation nonlinearities. In this way, a graceful performance degradation in presence of actuator saturations is incorporated in an elegant way. Finally, the problem of FTC of unstable LPV systems subject to actuator saturations is considered. In this case, the design of the virtual actuator is performed in such a way that the convergence of the state trajectory to zero is assured despite the saturations and the appearance of faults. Also, it is shown that it is possible to obtain some guarantees about the tolerated delay between the fault occurrence and its isolation, and that the nominal controller can be designed so as to maximize the tolerated delay.i Resum Aquesta tesi presenta diverses contribucions a l'estat de l'art del control per planificació del guany i del control tolerant a fallades (FTC).Pel que fa al control per planificació del guany, s'analitzen les connexions entre els paradigmes dels sistemes lineals a paràmetres variants en el temps (LPV) i d...

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Section: Recent Developments Of Fault Tolerant Controlmentioning

confidence: 99%

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Rotondo¹

2018

Springer Theses

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“…In recent years, adaptive controllers have been studied and particularly those in an l 1 framework have also seen a renaissance. [33][34][35][36][37][38] Sliding mode approaches have also been studied [39][40][41] and tested, particularly in Europe. 13 These papers argue that actuator faults can be viewed as a class of matched uncertainty and that the inherent robustness properties of the sliding mode control schemes can be exploited.…”

Section: Introductionmentioning

confidence: 99%

Development and evaluation of an integral sliding mode fault‐tolerant control scheme on the RECONFIGURE benchmark

Chen

Alwi

Edwards

2017

Intl J Robust & Nonlinear

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Summary This paper describes the development, application, and evaluation of a linear parameter‐varying integral sliding mode control allocation scheme to the Reconfiguration of Control in Flight for Integral Global Upset Recovery benchmark model to deal with an actuator failure/fault scenario. The proposed scheme has the capability to maintain close to nominal (fault free) load factor control performance in the face of elevator failures/faults by including a retrofitted integral sliding mode term and then rerouting (via control allocation) the augmented control signal to healthy elevators without reconfiguring the baseline controller. In order to mitigate any chattering appearing in the elevator demands, the retrofitted signal is based on a super‐twisting sliding mode structure. This produces a control signal that is continuous and does not have the discontinuous switching nature of traditional sliding mode schemes. The scheme is evaluated using an industrial Functional Engineering Simulator developed as part of the Reconfiguration of Control in Flight for Integral Global Upset Recovery project. Monte Carlo campaign results are shown to demonstrate the performance of the proposed scheme.

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“…() Passive FTC is essentially a robust controller with a limited fault‐tolerant capacity, whereas active FTC is proposed to integrate fault identification and control reconfiguration together, aiming to synthesize a new controller online to accommodate severe faults. Among the most recent results, a robust FTC strategy with feedback linearization and adaptive technique is developed for an air‐breathing hypersonic vehicle under actuator faults in the work of Gao et al A switching FTC approach is applied to an air‐breathing hypersonic vehicle subject to time‐varying actuator and sensor faults in the work of Wu and Cai . An adaptive output feedback fault‐tolerant controller is presented for a hypersonic vehicle with actuator faults in the work of He et al An FTC scheme based on the adaptive backstepping technique is developed against actuator fault of a hypersonic vehicle in the work of Xu et al An active FTC strategy is proposed for an HSV described by the Takagi‐Sugeno fuzzy model with actuator faults in the work of Shen et al…”

Section: Introductionmentioning

confidence: 99%

Observer‐based fault‐tolerant control of hypersonic scramjet vehicles in the presence of actuator faults and saturation

et al. 2017

Intl J Robust & Nonlinear

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Summary An adaptive sliding mode observer (SMO)–based fault‐tolerant control method taking into consideration of actuator saturation is proposed for a hypersonic scramjet vehicle (HSV) under a class of time‐varying actuator faults. The SMO is designed to robustly estimate the HSV states and reconstruct the fault signals. The adaptive technique is integrated into the SMO to approximate the unknown bounds of system uncertainties, actuator faults, and estimation errors. The robust SMO synthesis condition, which can be formulated as a set of linear matrix inequalities, is improved by relaxing structure constraints to the Lyapunov matrix. An anti‐windup feedback control law, which utilizes the estimated HSV states and the fault signals, is designed to counteract the negative effects of actuator saturation induced by actuator faults. Simulation results demonstrate that the proposed approach can guarantee stability and maintain L2 performance of the closed‐loop system in the presence of HSV actuator faults and saturation.

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Adaptive fault‐tolerant control for feedback linearizable systems with an aircraft application

Cited by 18 publications

References 45 publications

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Development and evaluation of an integral sliding mode fault‐tolerant control scheme on the RECONFIGURE benchmark

Observer‐based fault‐tolerant control of hypersonic scramjet vehicles in the presence of actuator faults and saturation

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