Adaptive actuator failure compensation for parametric strict feedback systems and an aircraft application

Tang, Xidong; Tao, Gang; Joshi, Suresh M.

doi:10.1016/s0005-1098(03)00219-x

Cited by 271 publications

(125 citation statements)

References 9 publications

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“…The aim is to prove the asymptotic stability of the error variables´1;´2;´3; ::::;´} defined in (8).…”

Section: Proofmentioning

confidence: 99%

“…This calls for a reconfiguration or rather an online adaptation of the controller in order to compensate for the failure-induced adversities on the plant. These reconfigurable schemes include direct adaptive control [6][7][8][9][10], sliding mode control (SMC) [11][12][13], adaptive SMC (ASMC) [14,15], SMC with control allocation [16][17][18][19], learning-based approaches [20][21][22][23], and multiplemodel adaptive control [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, failureinduced mismatched perturbations and exogenous disturbances are also tackled faithfully by the proposed controller. Unlike the BS-based methodologies proposed in [8,10,[28][29][30][31], the proposed control strategy neither requires trajectory initialization nor resorts to an increment in the virtual control gains for the improvement in post-fault tracking error performance. The contribution of this study relative to SMC-based fault-tolerant controllers [16][17][18][19] is that the proposed design totally eradicates intruding matched and mismatched uncertainties (rather than minimizing) due to actuator failures without any control reallocation scheme requiring an explicit detection and isolation of such uncertain eventualities.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Actuator fault-tolerant control (FTC) design with post-fault transient improvement for application to aircraft control

Chakravarty

Mahanta

2015

Int. J. Robust. Nonlinear Control

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SUMMARYA robust fault-tolerant control scheme is proposed for uncertain nonlinear systems with zero dynamics, affected by actuator faults and lock-in-place and float failures. The proposed controller utilizes an adaptive second-order sliding mode strategy integrated with the backstepping procedure, retaining the benefits of both the methodologies. A Lyapunov stability analysis has been conducted, which unfolds the advantages offered by the proposed methodology in the presence of inherent modeling errors and strong eventualities of faults and failures. Two modified adaptive laws have been formulated, to approximate the bounds of uncertainties due to modeling and to estimate the fault-induced parametric uncertainties. The proposed scheme ensures robustness towards linearly parameterized mismatched uncertainties, in addition to parametric and nonparametric matched perturbations. The proposed controller has been shown to yield an improved post-fault transient performance without any additional expense in the control energy spent. The proposed scheme is applied to the pitch control problem of a nonlinear longitudinal model of Boeing 747-100/200 aircraft. Simulation results support theoretical propositions and confirm that the proposed controller produces superior post-fault transient performance compared with already existing approaches designed for similar applications. Besides, the asymptotic stability of the overall controlled system is also established in the event of such faults and failures.

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“…The aim is to prove the asymptotic stability of the error variables´1;´2;´3; ::::;´} defined in (8).…”

Section: Proofmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Actuator fault-tolerant control (FTC) design with post-fault transient improvement for application to aircraft control

Chakravarty

Mahanta

2015

Int. J. Robust. Nonlinear Control

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show abstract

“…Therefore, with a proper actuator redundancy, how to design an FTC law to mitigate the effect of actuator failures on the system dynamics is of both practical and theoretical importance. Many FTC approaches against actuator failures have been proposed so far, [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] among which adaptive FTC has been proved to be an effective way to accommodate actuator failures, parameter uncertainties, and external disturbances.…”

Section: Introductionmentioning

confidence: 99%

Supervisory adaptive fault‐tolerant control against actuator failures with application to an aircraft

Ouyang

Lin

2017

Intl J Robust & Nonlinear

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Summary In this paper, a supervisory adaptive fault‐tolerant control scheme is proposed for a class of uncertain nonlinear systems with multiple inputs. The multiple inputs are the outputs of an actuator group that may act either on one control surface or on multiple control surfaces and may fail during operation. With some actuator groups as backups, the supervisory adaptive control includes 2 modes: the adaptive compensation mode and the switching mode. The former is used to compensate for the failure of an actuator group as long as at least one actuator of the group works normally, and the latter, to switch the controller from a failed group to a healthy one when the failure is detected by one of the monitoring functions that are constructed to supervise some variables related to system stability. It is shown that with the proposed scheme, all signals of the closed‐loop system are bounded, and prescribed transient and steady state performance of the tracking error can be guaranteed. An aircraft example is used to demonstrate the application of the proposed scheme.

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“…In [12], the adaptive backstepping method was used to design controllers for HFVs, while fuzzy logic systems (FLSs) and neural networks (NNs) were used to approximate the unknown system dynamics in [13,14]. However, backstepping design suffers from the problem of "explosion of complexity" caused by the repeated differentiations of nonlinear functions [5,[15][16][17]. To eliminate this problem, dynamic surface control (DSC) was applied to longitudinal dynamics of HFVs in [18][19][20][21][22][23], which uses a low-pass filter at each design 2 Mathematical Problems in Engineering step to avoid the derivatives of nonlinear functions.…”

Section: Introductionmentioning

confidence: 99%

Neural Networks Approximator Based Robust Adaptive Controller Design of Hypersonic Flight Vehicles Systems Coupled with Stochastic Disturbance and Dynamic Uncertainties

Zhu

Sun

Zhang

2017

Mathematical Problems in Engineering

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A neural network robust control is proposed for a class of generic hypersonic flight vehicles with uncertain dynamics and stochastic disturbance. Compared with the present schemes of dealing with dynamic uncertainties and stochastic disturbance, the outstanding feature of the proposed scheme is that only one parameter needs to be estimated at each design step, so that the computational burden can be greatly reduced and the designed controller is much simpler. Moreover, by introducing a performance function in controller design, the prespecified transient and performance of tracking error can be guaranteed. It is proved that all signals of closed-loop system are uniformly ultimately bounded. The simulation results are carried out to illustrate effectiveness of the proposed control algorithm.

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Adaptive actuator failure compensation for parametric strict feedback systems and an aircraft application

Cited by 271 publications

References 9 publications

Actuator fault-tolerant control (FTC) design with post-fault transient improvement for application to aircraft control

Actuator fault-tolerant control (FTC) design with post-fault transient improvement for application to aircraft control

Supervisory adaptive fault‐tolerant control against actuator failures with application to an aircraft

Neural Networks Approximator Based Robust Adaptive Controller Design of Hypersonic Flight Vehicles Systems Coupled with Stochastic Disturbance and Dynamic Uncertainties

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