scholarly journals Actuator Fault-Tolerant Control for an Electro-Hydraulic Actuator Using Time Delay Estimation and Feedback Linearization

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Van Du Phan ◽  
Cong Phat Vo ◽  
Hoang Vu Dao ◽  
Kyoung Kwan Ahn
Keyword(s):  
Time Delay ◽  
Feedback Linearization ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Time Delay Estimation ◽  
Delay Estimation ◽  
Actuator Fault ◽  
Hydraulic Actuator

Active fault-tolerant control of a Schon̈flies parallel manipulator based on time delay estimation

Robotica ◽  
2021 ◽  
pp. 1-18
Author(s):  
Pegah Ghaf-Ghanbari ◽  
Mahmood Mazare ◽  
Mostafa Taghizadeh
Keyword(s):  
Time Delay ◽  
Feedback Linearization ◽  
Parallel Manipulator ◽  
Fault Tolerant ◽  
Sliding Mode ◽  
Fault Tolerant Control ◽  
Time Delay Estimation ◽  
Lyapunov Theory ◽  
Delay Estimation ◽  
Fault Estimation

Abstract In this paper, a new hybrid fault-tolerant control (FTC) strategy based on nonsingular fast integral-type terminal sliding mode (NFITSM) and time delay estimation (TDE) is proposed for a Schönflies parallel manipulator. In order to detect, isolate, and accommodate actuator faults, TDE is used as an online fault estimation algorithm. Stability analysis of the closed-loop system is performed using Lyapunov theory. The proposed controller performance is compared with conventional sliding mode and feedback linearization control methods. The obtained results reveal the superiority of the proposed FTC based on TDE and NFITSM.

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