scholarly journals Sensor fault tolerant control strategy for autonomous vehicle driving

2016 ◽  
Author(s):  
M. R. Boukhari ◽  
A. Chaibet ◽  
M. Boukhnifer ◽  
S. Glaser
Keyword(s):  
Control Strategy ◽  
Fault Tolerant ◽  
Autonomous Vehicle ◽  
Fault Tolerant Control ◽  
Sensor Fault

Fault Tolerant Control of EPS System with Sensor Fault

2019 ◽  
Vol 28 (07) ◽  
pp. 1950116
Author(s):  
Manel Allous ◽  
Kais Mrabet ◽  
Nadia Zanzouri
Keyword(s):  
Control Strategy ◽  
System Performance ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Torque Sensor ◽  
Sensor Fault ◽  
Electric Power Steering ◽  
Luenberger Observer ◽  
Power Steering ◽  
Torsion Bar

Taking into account the sensors faults, modeling of electric power steering (EPS) behavior improves steering reliability. Such task becomes difficult considering the nonlinearity of EPS systems. Therefore, in order to ensure the good behavior stability of the EPS, it is important to validate such established models on a real system. Hence, a fault tolerant control (FTC) design is herein proposed by considering an occurring fault at the torsion bar. A Luenberger observer is used to estimate the torque sensor fault. The FTC is performed to compensate this sensor fault by using the inverse bond graph (BG) modeling. Our simulations reveal the importance of proposed control strategy to improve the EPS system performance but also to reduce the system complexity.

scholarly journals Proprioceptive Sensors’ Fault Tolerant Control Strategy for an Autonomous Vehicle

Sensors ◽  
2018 ◽  
Vol 18 (6) ◽  
pp. 1893 ◽  
Author(s):  
Mohamed Boukhari ◽  
Ahmed Chaibet ◽  
Moussa Boukhnifer ◽  
Sébastien Glaser
Keyword(s):  
Control Strategy ◽  
Fault Tolerant ◽  
Autonomous Vehicle ◽  
Fault Tolerant Control ◽  
Proprioceptive Sensors

scholarly journals Sensors Fault Diagnosis and Active Fault-Tolerant Control for PMSM Drive Systems Based on a Composite Sliding Mode Observer

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1695 ◽  
Author(s):  
Qinyue Zhu ◽  
Zhaoyang Li ◽  
Xitang Tan ◽  
Dabo Xie ◽  
Wei Dai
Keyword(s):  
Fault Diagnosis ◽  
Control Strategy ◽  
Active Fault ◽  
Fault Tolerant ◽  
Sliding Mode ◽  
Fault Tolerant Control ◽  
Sliding Mode Observer ◽  
Sensor Fault ◽  
Active Fault Tolerant Control ◽  
Drive Systems

Due to the use of multiple observers and controllers in multi-sensor fault-tolerant control of PMSM drive systems, the algorithm is complex and the system control performance is affected. In view of this, the paper studies multi-sensor fault diagnosis and active fault-tolerant control strategies based on a composite sliding mode observer. With the mathematical model of PMSM built, a design method of the composite sliding mode observer is proposed. A single observer is used to observe and estimate various state variables in the system in real time, which simplifies the implementation of observer-related algorithms. In order to improve the diagnostic accuracy of different types of sensors under different faults, a method for determining fault thresholds is proposed through global search for the maximum residual value. Based on this, a fault diagnosis and active fault-tolerant control strategy is proposed to realize fast switching and reconstruction of feedback signals of closed-loop control systems under different faults of multiple sensors, thus restoring the system performance. Finally, the effectiveness of the proposed algorithm and control strategy is verified by simulation experiments

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