Design and Implementation of Fractional Order Proportional Integral Controller for the Control of Aircraft Pitch Dynamics

2014 ◽  
pp. 731-742
Author(s):  
Abdul Wahid Nasir ◽  
U. Sabura Banu
Keyword(s):  
Fractional Order ◽  
Proportional Integral ◽  
Design And Implementation ◽  
Integral Controller ◽  
Proportional Integral Controller

scholarly journals Fractional order proportional-integral controller applied to a back-to-back converters

2018 ◽  
Vol 210 ◽  
pp. 02013
Author(s):  
Manuel A. Duarte-Mermoud ◽  
Juan-Carlos Travieso-Torres ◽  
Tedy A. Crespo-Herrera
Keyword(s):  
Fractional Order ◽  
Synchronous Generator ◽  
Power Converter ◽  
Electrical Network ◽  
Proportional Integral ◽  
Constant Torque ◽  
Pi Controllers ◽  
Network Simulations ◽  
Integral Controller ◽  
Proportional Integral Controller

The use of fractional order proportional-integral (FOPI) controllers, applied to back-to-back (BTB) power converters is proposed and studied in this paper. A comparative study with the integer order proportional-integral (PI) controllers, traditionally used for this purposes, is performed and the result are discussed. The BTB power converter is connected between a permanent magnet synchronous generator (PMSG) -which is moved by a turbine placed in line with a mineral pipeline for energy recovery purposesand the electrical network, to inject the recovered energy through a voltage control into the electrical network. Simulations under normal conditions (constant torque) as well as under variable torque variations are studied, representing different possible operating scenarios for the generator.

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.

scholarly journals New Design Method for Fractional Order Proportional Integral (FO-PI) Controller of 3x3 Multivariable Systems

2020 ◽  
Vol 5 (1) ◽  
pp. 73-78
Author(s):  
Sami LAIFA ◽  
Badreddine BOUDJEHEM
Keyword(s):  
Fractional Order ◽  
Design Method ◽  
Optimal Parameters ◽  
Proportional Integral ◽  
Pi Controllers ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Diffusive Representation ◽  
Irrational Transfer Function ◽  
Better Than

This paper presents a new design method of Fractional Order Proportional Integral Controller (FO-PI) for 3x3 multivariable system (three-input-three-output). The Optimal parameters of the FO-PI controllers are tuning by minimizing performance index criterion as objective function. The irrational transfer function of the fractional operator is performed by means of diffusive representation and allows to formulate the optimization problem as a function of fractional order. The simulation results show that the performance of the response obtained by diffusive approach -based FO-PI are better than whose obtained by the classical controllers.

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