Delayed Model Approximation and Control Design for Under-Damped Systems

David F. Novella-Rodríguez, Basilio del Muro-Cuéllar, German Hernandez-Hernández, Juan F. Marquez-Rubio

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The presented paper introduces a simple methodology to obtain a reduced-order approximation to high-order systems with oscillating dynamics. The reduction is based on the frequency domain characteristics of the under-damped high-order process. Classic control theory tools are used in order to obtain an accurate model reduction. Time-delay term plays an important role at the low-order model since it allows to hold the phase characteristics of the original system. Finally, a simple PID tuning methodology has been proposed in order to obtain the controller gains from the reduced model. Some numerical simulations are presented obtaining a similar performance when the PID controller applied to the high-order plant.

Original languageEnglish
Pages (from-to)1316-1321
Number of pages6
JournalIFAC Proceedings Volumes (IFAC-PapersOnline)
Issue number1
Publication statusPublished - Jul 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017

Copyright 2017 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering


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