2021
DOI: 10.1049/cth2.12095
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Fractional‐order controllers for irrational systems

Abstract: In this contribution, fractional-order controllers of the type PD and PI are applied to a class of irrational transfer function models that appear in large-scale systems, such as networks of mechanical/electrical elements and distributed parameter systems. More precisely, by considering the fractional-order controller k p + k s in the Laplace domain with −1 ≤ ≤ 1, a stability analysis in the parameter-space (k p , k ,) is presented. Furthermore, as a way to measure the controller robustness, the controller's f… Show more

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Cited by 10 publications
(6 citation statements)
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References 50 publications
(106 reference statements)
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“…We expect that some of the results presented in this work would be useful in different engineering applications [34,35] since linear approximations are often useful [36] for control engineering applications. For instance, one can develop an information-geometric cost function for control design to achieve a guided self-organisation [37,38], instead of using entropy as a cost function [39].…”
Section: Discussionmentioning
confidence: 91%
“…We expect that some of the results presented in this work would be useful in different engineering applications [34,35] since linear approximations are often useful [36] for control engineering applications. For instance, one can develop an information-geometric cost function for control design to achieve a guided self-organisation [37,38], instead of using entropy as a cost function [39].…”
Section: Discussionmentioning
confidence: 91%
“…The results of our algorithm are discussed together with some simulations. Future work includes exploring several novel and well known linear control design techniques (for instance, see [9,10]), the generalisation of the model to a multidimen- sional framework and the improvement of the optimisation method for the controller's design.…”
Section: Discussionmentioning
confidence: 99%
“…For instance, to find a linear representation of the interactions between agents that also includes the control actions. If every agent is controlled by simple low-order controllers, we may use well known linear system control design techniques (see [8,9]) or new low-order control approaches (see [10,11,12]). On the other hand, there are other approaches that could be explored, for example the use of information metrics for guided self-organisation in the MAS formation [13] or the use of a fokker-planck control approach [14,15].…”
Section: Introductionmentioning
confidence: 99%
“…Based on the concept of sigma-stability and the theory of D-partitions [4,5,12,13], we can design PI controllers that allows us to obtain the maximum achievable exponential decay in the closed-loop system response.…”
Section: Piσ Controllermentioning
confidence: 99%