Analysis and design of integral sliding manifolds for systems with unmatched perturbations

Castaños, Fernando; Fridman, Leonid

doi:10.1109/tac.2006.875008

Cited by 524 publications

(345 citation statements)

References 17 publications

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“…Notice that, at t = t o , the switching function σ(x(t0), t0) = 0, and hence the reaching phase is eliminated [11]. It can be shown (see for example) [9] that the sliding motion associated with (17) is always nominally governed by (A − Bν F ) independent of the choice of G. Recently an approach was suggested for the selection of G which attempts to ameliorate the effects of unmatched uncertainty [11]. In this paper…”

Section: A Integral-type Switching Surface Designmentioning

confidence: 99%

Design and Analysis of an Integral Sliding Mode Fault Tolerant Control Scheme

Hamayun

Edwards

Alwi

2016

Fault Tolerant Control Schemes Using Integral Sliding Modes

163

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Abstract-A novel scheme for fault tolerant control is proposed in this paper, in which integral sliding mode ideas are incorporated with control allocation to cope with the total failure of certain actuators, under the assumption that redundancy is available in the system. The proposed scheme uses the effectiveness level of the actuators to redistribute the control signals to healthy actuators without reconfiguring the controller. The effectiveness of the proposed scheme against faults or failures is tested in simulation based on a large transport aircraft model. Index Terms-Fault tolerant control (FTC), linear matrix inequalities (LMIs), integral sliding modes (ISM).

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Section: A Integral-type Switching Surface Designmentioning

confidence: 99%

Design and Analysis of an Integral Sliding Mode Fault Tolerant Control Scheme

Hamayun

Edwards

Alwi

2016

Fault Tolerant Control Schemes Using Integral Sliding Modes

163

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“…The design of this switching function, as in [13], [14] and [9] aims to eliminate the reaching phase which is present in the traditional sliding mode control techniques [8]. The elimination of the reaching phase, ensures the occurrence of the sliding mode starting at t = 0, and guarantees the robustness of the closed-loop sliding motion throughout the entire response of the system.…”

Section: Integral Sliding Mode Controller Designmentioning

confidence: 99%

An Augmentation Scheme for Fault Tolerant Control Using Integral Sliding Modes

Hamayun¹,

Edwards²,

Alwi³

2016

Fault Tolerant Control Schemes Using Integral Sliding Modes

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Abstract-In this paper a novel fault tolerant control allocation scheme is proposed, which has the capability to maintain closed-loop nominal performance in the case of faults/failures by effectively managing the actuator redundancy, and without reconfiguring the underlying control law. The proposed scheme relies on an a posteri approach, building on an existing state feedback controller designed using only the primary actuators. An integral sliding mode scheme is integrated with the existing controller to introduce fault tolerance. The proposed scheme uses the measured or estimated actuator effectiveness levels in order to redistribute the control signals to the healthy ones which allows a certain class of total actuator failures to be mitigated. The effectiveness of the proposed scheme is tested in simulation using a high fidelity nonlinear model of a transport aircraft model.

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“…In particular this term will add robustness to the control allocation scheme proposed in Section III. This robustness will be introduced by the introduction of an integral sliding mode [44], [45]. Integral sliding modes are quite distinct from 'conventional' sliding modes [46].…”

Section: Integral Sliding Modesmentioning

confidence: 99%

Fault tolerant longitudinal aircraft control using non‐linear integral sliding mode

Alwi

Edwards

2014

IET Control Theory & Applications

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This paper proposes a novel nonlinear fault tolerant scheme for longitudinal control of an aircraft system, comprising an integral sliding mode control allocation scheme and a backstepping structure. In fault free conditions, the closed loop system is governed by the backstepping controller and the integral sliding mode control allocation scheme only influences the performance if faults/failures occur in the primary control surfaces. In this situation the allocation scheme redistributes the control signals to the secondary control surfaces and the scheme is able to tolerate total failures in the primary actuator. A backstepping scheme taken from the existing literature is designed for flight path angle tracking (based on the nonlinear equations of motion) and this is used as the underlying baseline controller in nominal conditions. The efficacy of the scheme is demonstrated using a high fidelity aircraft benchmark model. Excellent results are obtained in the presence of plant/model uncertainty in both fault-free and faulty conditions.

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Analysis and design of integral sliding manifolds for systems with unmatched perturbations

Cited by 524 publications

References 17 publications

Design and Analysis of an Integral Sliding Mode Fault Tolerant Control Scheme

Design and Analysis of an Integral Sliding Mode Fault Tolerant Control Scheme

An Augmentation Scheme for Fault Tolerant Control Using Integral Sliding Modes

Fault tolerant longitudinal aircraft control using non‐linear integral sliding mode

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