Adaptive fault‐tolerant control for fractional‐order fuzzy financial time‐delay system

2021 ◽  
Author(s):  
Senpagam Sundarrajan ◽  
Dhanalakshmi Palanisami
Keyword(s):  
Time Delay ◽  
Fractional Order ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Delay System ◽  
Time Delay System ◽  
Financial Time

Observer-based fault-tolerant control for time delay system

2020 ◽  
Author(s):  
Hadil Soltani ◽  
Abdel Aitouche ◽  
Rafika El Harabi ◽  
Saloua Bel Hadj Ali Naoui ◽  
Mohamed Naceur Abdelkrim
Keyword(s):  
Time Delay ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Delay System ◽  
Time Delay System

Robust Fractional Order Proportional Integral Control for Large Time-Delay System

2014 ◽  
Vol 716-717 ◽  
pp. 1614-1619
Author(s):  
Rui Hao Xin ◽  
Chun Yang Wang ◽  
Xue Lian Liu ◽  
Ming Qiu Li ◽  
Duan Yuan Bai
Keyword(s):  
Time Delay ◽  
Fractional Order ◽  
Delay Time ◽  
Large Time ◽  
Delay System ◽  
Order System ◽  
Time Delay System ◽  
Proportional Integral ◽  
Integral Controller ◽  
Proportional Integral Controller

In this paper, a new control method for large time delay system is proposed. Firstly, the decreasing time delay controller is used to remodel large delay time plant into small delay time plant. Then, a fractional robust proportional-integral controller (FOPI) is designed, using the phase margin and cut-off frequency at a specified point in the Bode plot of flat robust conditions, to guarantee the desired control performance and the robustness of the high order system to the gain order system. For comparison between the fractional order proportional integral controller and the traditional integer order PID (IOPID) controller, the IOPID controller is also designed following the same proposed tuning specifications. The simulation results indicates that the both designed controllers work efficiently. Furthermore, the FOPI controller makes the large time-delay system get better control effect, the system has high robustness, adaptive ability and anti-jamming ability.

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