학술논문

Model Reference Based Robust Tuning Rule for 2-DoF Fractional PI Controllers with Robustness Constraint for SOPDT Process Model
Document Type
Conference
Source
2024 28th International Conference on System Theory, Control and Computing (ICSTCC) System Theory, Control and Computing (ICSTCC), 2024 28th International Conference on. :182-187 Oct, 2024
Subject
Computing and Processing
Robotics and Control Systems
Signal Processing and Analysis
PI control
Sensitivity
Computational modeling
Design methodology
2-DOF
Transfer functions
Process control
Robustness
Servomotors
Tuning
Model Reference
2-DoF
Fractional Control
Robust Control
Language
ISSN
2473-5698
Abstract
This paper presents a methodology for the design of a two-degree-of-freedom fractional-order PI controller (2-DoF FOPI) tuning rule for second-order plus dead-time (SOPDT) models. The methodology, which is based on Model Reference Robust Tuning (MoReRT), is intended to provide a robust and reliable approach to controller tuning. The optimization procedure to define the tuning rule is based on matching the response of the proposed control system with target transfer functions defined from the servo and regulatory control modes of the system. This poses a design methodology that differs from that usually proposed for 2-DoF controllers. Furthermore, MoReRT enables the design of controllers with desired robustness levels within the range of typical values, which typically fall between 1.40 and 2.00 for the maximum value of the sensitivity function. To validate this proposed extension to the original methodology for integer controllers, an illustrative example is presented where the improvement in terms of control system performance and robustness can be quantified.