Fault tolerant control using sliding mode observers

Edwards, Christopher; Tan, Chee Pin

doi:10.1109/cdc.2004.1429642

Cited by 33 publications

(7 citation statements)

References 18 publications

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“…This technique has been widely used in the published literature, for example [15,7]. If the filters have not been used and w 1 , w 2 have been used directly as the output , y then there will be faults and disturbances in the 'output equation' which is not the structure where the fault reconstruction technique can be applied to.…”

Section: Ddfr Using Two Observersmentioning

confidence: 99%

New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade

Tan

Man

et al. 2010

Int. J. Control Autom. Syst.

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This paper presents a disturbance decoupled fault reconstruction (DDFR) scheme using two sliding mode observers in cascade. Measurable signals from the first observer are found to be the output of a fictitious system that is driven by the fault and disturbances. Then the signals are fed into a second observer which will reconstruct the fault. Sufficient conditions which guarantee DDFR are investigated and presented in terms of the original system matrices, and they are found to be less conservative than if only one single observer is used; therefore DDFR can be achieved for a wider class of systems using two sliding mode observers. A simulation example validates the claims made in this paper.

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Section: Ddfr Using Two Observersmentioning

confidence: 99%

New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade

Tan

Man

et al. 2010

Int. J. Control Autom. Syst.

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“…For systems with actuator failures, there are several ways to monitor and detect the instance of actuator failure. For example, we may apply the adaptive detection observer [12,13] or sliding mode observers [14]. Intuitively, if actuators suffer destabilizing failure only for a short time interval and with a low frequency of occurrence, stability could be preserved.…”

Section: Remarkmentioning

confidence: 99%

Output feedback control for uncertain linear systems with faulty actuators based on a switching method

Wang

Zhao

Dimirovski

et al. 2008

Intl J Robust & Nonlinear

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Dimirovski, Georgi M. (Dogus Author)This paper investigates the problem of output feedback stabilization for a class of uncertain linear systems with faulty actuators via the synergy with a switching strategy. When actuators suffer a 'destabilizing failure' and the never-faulty actuators cannot stabilize the given system, the closed-loop exponential stability can still be achieved via the average dwell-time scheme employing an arbitrary switching signal. The prerequisite condition found requires the ratio between the two lapse times, when the system is devoid of faulty actuators and when it is not so, to be less than a certain specified constant. Then the stabilizing output feedback controls are designed via the technique of linear matrix inequalities. The illustrative example and the respective simulation results demonstrate the feasibility and effectiveness of the proposed design synthesis

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“…[5][6][7] Within this same scope, several work using FTC can be cited. [8][9][10][11][12] The robust sensor fault estimation of the motor current is established based on HN performance index. The sensor reconstruction is then used as the input of the EPS system controller to design the FTC.…”

Section: Introductionmentioning

confidence: 99%

Fast fault-tolerant control of electric power steering systems in the presence of actuator fault

Allous

Mrabet

Zanzouri³

2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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Electric power steering is an advanced steering system that uses an electric motor to improve steering comfort of the car. As a result, the failures in the electric motor can lead to additional fault modes and cause damage of the electric power steering system performance. Hence, to ensure the stability of this latter, the present paper proposes a new method to reconfigure the fault control. A novelty approach of fast fault estimation based on adaptive observer is also proposed. Moreover, to guarantee optimal and fast control, a fault-tolerant control based on inverse bond graph modeling is designed to construct the behavior of the nominal system. The simulation and the experimental results on a real electric power steering system reveal the importance of the control strategy and show that the proposed approach works as intended.

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Fault tolerant control using sliding mode observers

Cited by 33 publications

References 18 publications

New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade

New results in disturbance decoupled fault reconstruction in linear uncertain systems using two sliding mode observers in cascade

Output feedback control for uncertain linear systems with faulty actuators based on a switching method

Fast fault-tolerant control of electric power steering systems in the presence of actuator fault

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