Passive Fault Tolerant Control of Piecewise Affine Systems Based on H Infinity Synthesis

Gholami, Mahdi; Cocquempot, Vincent; Schiøler, Henrik; Bak, Thomas

doi:10.3182/20110828-6-it-1002.02935

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…We only consider loss of effectiveness faults occur to the actuators. If losses of effectiveness faults occur to the actuators, the faulty actuators will fail to provide the desired control effects [20,21]. That is, the faulty actuators can be formulated as:…”

Section: Actuator Fault Modelmentioning

confidence: 99%

“…Such a controller is usually less complex, but in order to cope with 'worst case' fault effects, has a certain degree of conservatism [16,18,19]. However, its advantages are obvious: the parameters and structure of the controller are to be designed fixed; it neither needs to adjust the control law and control parameters online, nor needs fault detection, diagnosis and isolation; it is easy to realize and has the advantage of avoiding the time delay, which is very important [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Passive fault-tolerant control for vehicle active suspension system based on H2/H∞ approach

Zhang¹,

Gong²

2018

J. vibroeng.

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Abstract. In this paper, a robust passive fault-tolerant control (RPFTC) strategy based on / approach and an integral sliding mode passive fault tolerant control (ISMPFTC) strategy based on / approach for vehicle active suspension are presented with considering model uncertainties, loss of actuator effectiveness and time-domain hard constraints of the suspension system. performance index less than and performance index is minimized as the design objective, avoid choosing weighting coefficient. The half-car model is taken as an example, the robust passive fault-tolerant controller and the integral sliding mode passive fault tolerant control law is designed respectively. Three different fault modes are selected. And then compare and analyze the control effect of vertical acceleration of the vehicle body and pitch angular acceleration of passive suspension control, robust passive fault tolerant control and integral sliding mode passive fault tolerant control to verify the feasibility and effectiveness of passive fault tolerant control algorithm of active suspension. The studies we have performed indicated that the passive fault tolerant control strategy of the active suspension can improve the ride comfort of the suspension system.

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Section: Actuator Fault Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Passive fault-tolerant control for vehicle active suspension system based on H2/H∞ approach

Zhang¹,

Gong²

2018

J. vibroeng.

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“…These robust approaches ensure stability and defect strength, external or internal disturbances such as uncertainties or parameter variations of the model. These robust control strategies, such as adaptive control (Richter, 2009), sliding mode (Almeida and Arau´jo, 2013) and H N optimization (Gholami et al, 2011), are widely used.…”

Section: Robust Control Synthesismentioning

confidence: 99%

New fault-tolerant control architectures based on voting algorithms for electric vehicle induction motor drive

Raisemche

Boukhnifer

Diallo

2016

Transactions of the Institute of Measurement and Control

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International audienceIn this paper, we present a comparative study of four voting algorithms in two observer-based fault-tolerant control (FTC) architectures for an electric vehicle (EV) induction motor drive. The first architecture, called output FTC, is based on the mechanical sensor, an EKF and a second-order sliding mode observer (SMO2). The second one, input FTC, is based on three controllers (PI, H loop shaping and the generalized internal model control), the most appropriate being selected to ensure good behaviour in presence of a multiplicative sensor fault (the fault is modelled as an exponential type emulating a bias). A third architecture, called hybrid FTC, based on the previous output and input fault-tolerant schemes, is built to mitigate simultaneous faults. Simulation and experimental results for a 7.5-kW induction motor drive show the efficiency of the approaches and their robustness against parametric variations for different load conditions

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“…An upper bound of a performance cost is minimized, and the control design problem is transformed into a convex optimization problem with LMI constraints. In , H ∞ analysis is used to design a state feedback controller against actuator faults. Reconfigurability of PWA systems based on state feedback controller is discussed in .…”

Section: Introductionmentioning

confidence: 99%

Active fault tolerant control of piecewise affine systems with reference tracking and input constraints

Gholami

Cocquempot

Schiøler

et al. 2013

Adaptive Control & Signal

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An active fault tolerant control (AFTC) method is proposed for discrete-time piecewise affine (PWA) systems. Only actuator faults are considered. The AFTC framework contains a supervisory scheme, which selects a suitable controller in a set of controllers such that the stability and an acceptable performance of the faulty system are held. The design of the supervisory scheme is not considered here. The set of controllers is composed of a normal controller for the fault-free case, an active fault detection and isolation controller for isolation and identification of the faults, and a set of passive fault tolerant controllers (PFTCs) modules designed to be robust against a set of actuator faults. In this research, the piecewise nonlinear model is approximated by a PWA system. The PFTCs are state feedback laws. Each one is robust against a fixed set of actuator faults and is able to track the reference signal while the control inputs are bounded. The PFTC problem is transformed into a feasibility problem of a set of LMIs. The method is applied on a large-scale live-stock ventilation model. Normal Controller AFDI Controller Piecewise affine model for nonlinear model approximationIn the following, the procedure to transform a nonlinear model into a PWA model is given.

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Passive Fault Tolerant Control of Piecewise Affine Systems Based on H Infinity Synthesis

Cited by 6 publications

References 12 publications

Passive fault-tolerant control for vehicle active suspension system based on H2/H∞ approach

Passive fault-tolerant control for vehicle active suspension system based on H2/H∞ approach

New fault-tolerant control architectures based on voting algorithms for electric vehicle induction motor drive

Active fault tolerant control of piecewise affine systems with reference tracking and input constraints

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