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- George Acioli, Pericles R. Barros
- 2011 IEEE International Conference on Control…
- 2011

In this paper the decoupling control of two-inputs two-outputs (TITO) processes using a simplified dynamic decoupler is considered. A frequency-domain identification technique that uses a relay experiment to estimate a first-order plus dead-time (FOPDT) TITO model is presented. The resulting FOPDT TITO model is accurate around at the frequency of interest… (More)

In this work the identification of first-order plus dead-time models from a relay experiment is considered. The relay excitation is applied to the closed-loop. Alternative techniques for identification are examined and simple algorithms are proposed for dealing with the dead-time. Simulation examples are used to illustrate the techniques.

- Lucas J. da S. Moreira, Christian C. Dias, Rafael B. C. Lima, Péricles R. Barros, George Acioli
- 2016 12th IEEE International Conference on…
- 2016

This paper is about modeling and control of a XY positioning table. It is described the construction and instrumentation of a double axis positioning system. It is developed a general electromechanical model, followed by the identification of simplified models for control purposes. At last, it is proposed a PID control strategy, tuned by Internal Model… (More)

- Andre L. S. Barbosa, Pericles R. Barros, George Acioli
- 2014 IEEE Conference on Control Applications (CCA…
- 2014

In this paper a proposal for redesign PI controllers with Symmetrical Optimum (SO) based design is presented. The method uses an integration plus first-order model, identified from two frequency points obtained from combined relay experiment. The proposal for the identification of the used model is also presented. The main idea is to apply a double… (More)

- George Acioli, Pericles R. Barros
- 2012 IEEE International Conference on Control…
- 2012

In this paper it is proposed a procedure for MIMO closed-loop evaluation and decentralized PI controller redesign using a relay-based experiment in a sequential manner. The experiment data is used to evaluate the actual MIMO closed-loop. It is evaluated using classical robustness measures of each loop. The aim of the controller redesign is to achieve a… (More)

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