Fault-tolerant control design for linear systems with input constraints and actuator failures

2009 ◽  
Author(s):  
Shengqi Sun ◽  
Liang Dong ◽  
Cuijuan An ◽  
Wenwei Liu
Keyword(s):  
Linear Systems ◽  
Fault Tolerant ◽  
Control Design ◽  
Fault Tolerant Control ◽  
Input Constraints ◽  
Actuator Failures

scholarly journals A Fault Tolerant Control for Sensor and Actuator Failures of an Non Linear Hybrid System

2018 ◽  
Vol 8 (5) ◽  
pp. 2864
Author(s):  
Chalandi Hanene ◽  
Ben Slimane Jihane ◽  
Ksouri Moufida
Keyword(s):  
Linear Systems ◽  
Hybrid System ◽  
Fault Tolerant ◽  
Main Idea ◽  
Fault Tolerant Control ◽  
New Approach ◽  
Actuator Failures ◽  
Research Activities ◽  
Non Linear ◽  
Diagnosis Method

<p>We focused in this work on a fault tolerant control of a non linear hybrid system class based on diagnosis method (determine and locate the defects and their types) and on the faults reconfiguration method.In literature we can found many important research activities over the fault-tolerant control of non linear systems and linear Hybridsystems. But it dosen´t exist too many for the non linear hybridsystem.The main idea in this paper is to consider a new approach to improve the reconfiguration performance of the non linear hybrid system by using hammerstein method which is designed to works only for linear systems. This method compensated the effect of the faults and guarantees the closed-loop system stable. The proposed method is simulated with a hydraulic system of two tanks with 4 modes.</p>

scholarly journals A Fault Tolerant Control for Sensor and Actuator Failures of an Non Linear Hybrid System

2018 ◽  
Vol 8 (5) ◽  
pp. 2864
Author(s):  
Chalandi Hanene ◽  
Ben Slimane Jihane ◽  
Ksouri Moufida
Keyword(s):  
Linear Systems ◽  
Hybrid System ◽  
Fault Tolerant ◽  
Main Idea ◽  
Fault Tolerant Control ◽  
New Approach ◽  
Actuator Failures ◽  
Research Activities ◽  
Non Linear ◽  
Diagnosis Method

<p>We focused in this work on a fault tolerant control of a non linear hybrid system class based on diagnosis method (determine and locate the defects and their types) and on the faults reconfiguration method.In literature we can found many important research activities over the fault-tolerant control of non linear systems and linear Hybridsystems. But it dosen´t exist too many for the non linear hybridsystem.The main idea in this paper is to consider a new approach to improve the reconfiguration performance of the non linear hybrid system by using hammerstein method which is designed to works only for linear systems. This method compensated the effect of the faults and guarantees the closed-loop system stable. The proposed method is simulated with a hydraulic system of two tanks with 4 modes.</p>

Fault-tolerant Control Design for a Class of Linear Systems Under the Constrained Communications*

2012 ◽  
Vol 45 (20) ◽  
pp. 904-909
Author(s):  
Zehui Mao ◽  
Bin Jiang ◽  
Maoyin Chen ◽  
Huajun Gong ◽  
Ningyun Lu
Keyword(s):  
Linear Systems ◽  
Fault Tolerant ◽  
Control Design ◽  
Fault Tolerant Control

scholarly journals A Robust Fault-Tolerant Predictive Control for Discrete-Time Linear Systems Subject to Sensor and Actuator Faults

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2307
Author(s):  
Sofiane Bououden ◽  
Ilyes Boulkaibet ◽  
Mohammed Chadli ◽  
Abdelaziz Abboudi
Keyword(s):  
Model Predictive Control ◽  
Linear Systems ◽  
Predictive Control ◽  
Robust Stability ◽  
Discrete Time ◽  
Fault Tolerant ◽  
Linear Matrix ◽  
Input Constraints ◽  
Actuator Faults ◽  
Time Linear

In this paper, a robust fault-tolerant model predictive control (RFTPC) approach is proposed for discrete-time linear systems subject to sensor and actuator faults, disturbances, and input constraints. In this approach, a virtual observer is first considered to improve the observation accuracy as well as reduce fault effects on the system. Then, a real observer is established based on the proposed virtual observer, since the performance of virtual observers is limited due to the presence of unmeasurable information in the system. Based on the estimated information obtained by the observers, a robust fault-tolerant model predictive control is synthesized and used to control discrete-time systems subject to sensor and actuator faults, disturbances, and input constraints. Additionally, an optimized cost function is employed in the RFTPC design to guarantee robust stability as well as the rejection of bounded disturbances for the discrete-time system with sensor and actuator faults. Furthermore, a linear matrix inequality (LMI) approach is used to propose sufficient stability conditions that ensure and guarantee the robust stability of the whole closed-loop system composed of the states and the estimation error of the system dynamics. As a result, the entire control problem is formulated as an LMI problem, and the gains of both observer and robust fault-tolerant model predictive controller are obtained by solving the linear matrix inequalities (LMIs). Finally, the efficiency of the proposed RFTPC controller is tested by simulating a numerical example where the simulation results demonstrate the applicability of the proposed method in dealing with linear systems subject to faults in both actuators and sensors.

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