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In this paper, a sensor fault-tolerant control method is developed. The proposed method makes possible the compensation of additive or multiplicative sensor faults and failures. Its principle is based on the on-line estimation of an accurate state system when a fault occurs. Based on the multiple model algorithm, called interacting multiple model, applied to a particular bank of Kalman filters, a...
In this paper, static output feedback stochastic stabilization and disturbance attenuation issues for a class of discrete-time Networked Control Systems (NCSs) subject to random failures and random delays are addressed. The different random processes are modeled as Markovian chains, and the resulting closed-loop system belongs to the class of discrete-time Markovian Jump Linear Systems (MJLS). Results...
This paper deals with Active Fault Tolerant Control System when performance degradation occurs on system due to actuator faults. Fault Tolerant Control methods are generally focused their attention to design a reconfigurable controller in order to reach the nominal closed-loop performances as close as possible. In the presence of such faults, the steady-state performance can be also degraded due to...
This paper presents a FTC approach based on sensor masking principle in the special case of control system integrating a wireless sensor network. In the presence of sensor faults, the faulty measurements corrupt directly the behaviour of the closed-loop systems. With wireless transmission, packet losses are acting as additional sensor faults. Since the controller aims at cancelling the error between...
The main goal of this paper consists in the development of a new actuator fault-tolerant control dedicated to nonlinear systems. Based on the assumption that the nonlinear system is described by a finite number of interpolated linear time invariant models, the proposed method makes possible the faults compensation for the whole operating range through an extended interacting multiple model. Its principle...
This paper deals with static output feedback Hinfin control of a class of discrete-time networked control systems (NCSs) subject to random failures and random delays. The different random processes are modeled as Markovian chains, and the resulting closed-loop system belongs to the class of discrete-time Markovian jump linear systems (MJLS). For synthesis purposes, we adopt a new framework, based...
This paper deals with static output feedback Hα control of continuous time active fault tolerant control systems with Markovian parameters (AFTCSMP) and state-dependent noise. It adopts a new framework, based on the synthesis of ellipsoidal sets of controllers. It is also shown that the obtained results can easily be applied to the problematic of mode-independent static output feedback Halpha control...
In this paper, we address the problem of incorporating the notions of performance evaluation and degraded mode operation in an active fault tolerant control system (AFTCS) scheme. This problematic is addressed under a multi-criterion optimization framework, which allows us to consider several design performances. The proposed approach is composed of two principal stages. The first one deals with the...
In this paper, we address the robust dynamic output feedback control problem of continuous time active fault tolerant control system with Markovian parameters (AFTCSMP) subject to structured parameter uncertainties. We will first derive a necessary and sufficient condition for the robust exponential stability in the mean square of the uncertain AFTCSMP under a dynamic output feedback control, in terms...
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