Event-based discrete PI controllers robustness analysis through sampled describing function technique
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Title
Event-based discrete PI controllers robustness analysis through sampled describing function techniqueDate
2021-08-09Publisher
Taylor and FrancisISSN
0020-7179; 1366-5820Bibliographic citation
Oscar Miguel-Escrig & Julio-Ariel Romero-Pérez (2021) Event-based discrete PI controllers robustness analysis through sampled describing function technique, International Journal of Control, 2024, 97, 1, p. 86-100. DOI: 10.1080/00207179.2021.1962980Type
info:eu-repo/semantics/articlePublisher version
https://www.tandfonline.com/toc/tcon20/currentVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
In this work, the robustness of discrete PI controllers when used with a Symmetric-Send-On-Delta (SSOD) sampling law is addressed. Hitherto, the continuous Describing Function has been employed as a suitable tool to ... [+]
In this work, the robustness of discrete PI controllers when used with a Symmetric-Send-On-Delta (SSOD) sampling law is addressed. Hitherto, the continuous Describing Function has been employed as a suitable tool to evaluate the robustness of such systems to limit cycle oscillations induced by the SSOD. However, due to the discrete implementation of the controllers in most of the actual applications, the Sampled Describing Function technique is used in this work to provide a more realistic approach, which takes into account the effect of both the SSOD and sampling period of the discrete controller on inducing such oscillation. A simple measure has been developed to characterise the robustness of these systems and it has been tested through several examples, showing its validity in predicting the apparition or avoidance of limit cycles. This measure has been used to evaluate the robustness of some spread tuning rules applied to a wide batch of systems reflecting the dynamics of most processes in the industry. [-]
Funder Name
Universitat Jaume I | Conselleria d’Educació, Investigació, Cultura i Esport de la Generalitat Valenciana
Project code
18I411-UJI-B2018-39 | ACIF/2018/244
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© 2021 Informa UK Limited, trading as Taylor & Francis Group
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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