FOPI/FOPID Tuning Rule Based on a Fractional Order Model for the Process

This paper deals with the design of a control system based on fractional order models and fractional order proportional-integral-derivative (FOPID) controllers and fractional-order proportional-integral (FOPI) controllers. The controller design takes into account the trade-off between robustness and...

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Bibliographic Details
Published in:Fractal and fractional 2022-09, Vol.6 (9), p.478
Main Authors: Meneses, Helber, Arrieta, Orlando, Padula, Fabrizio, Visioli, Antonio, Vilanova, Ramon
Format: Article
Language:English
Subjects:
Approximation
automatic tuning
Closed loop systems
Control algorithms
Control systems design
Controllers
Fractional calculus
fractional order
Guarantees
Optimization
performance analysis
PID control
Process controls
Proportional integral derivative
Robust control
robustness
Tradeoffs
Tuning
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Summary:This paper deals with the design of a control system based on fractional order models and fractional order proportional-integral-derivative (FOPID) controllers and fractional-order proportional-integral (FOPI) controllers. The controller design takes into account the trade-off between robustness and performance as well as the trade-off between the load disturbance rejection and set-point tracking tasks. The fractional order process model is able to represent an extensive range of dynamics, including over-damped and oscillatory behaviors and this simplifies the process modelling. The tuning of the FOPID and FOPI controllers is achieved by using an optimization, as a first step, and in a second step, several fitting functions were used to capture the behavior of the optimal parameters of the controllers. In this way, a new set of tuning rules called FOMCoRoT (Fractional Order Model and Controllers Robust Tuning) is obtained for both FOPID and FOPI controllers. Simulation examples show the effectiveness of the proposed control strategy based on fractional calculus.
ISSN:2504-3110
2504-3110
DOI:10.3390/fractalfract6090478