# Modeling and Simulation of a Temperature Robust Control in Grain Drying Systems for Thermal Damage Reduction

### Josenalde B. de Oliveira, Marcus V. A. Fernandes, Leonardo R. L. Teixeira

#### Abstract

Informatics plays an imperative role in the designing and tuning of new control systems strategies, since the computational simulation of such systems is part of the entire process of applying an algorithm on a real environment. This paper presents an alternative to the Proportional-Integrative-Derivative (PID) controller for temperature control in grain drying systems. The PID controller may present undesirable oscillations in the presence of external disturbances associated with agroindustrial facilities, thus demanding a precise and automatic tuning during the entire process. Robust controllers are suitable and recommended for the drying final quality, since the grains are offered a thermal damage reduction when submitted to abrupt temperature variations, as fragility and even crack during processing. Simulation results on an experimental model of a nonlinear robust controller, named Shunt Indirect Variable Structure Model Reference Adaptive Controller (SIVS-MRAC) are shown. Performance results before disturbances and parametric variations are compared with the PID behaviour.

#### References

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#### Paper Citation

#### in Harvard Style

B. de Oliveira J., V. A. Fernandes M. and R. L. Teixeira L. (2012). **Modeling and Simulation of a Temperature Robust Control in Grain Drying Systems for Thermal Damage Reduction** . In *Proceedings of the 9th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,* ISBN 978-989-8565-21-1, pages 561-565. DOI: 10.5220/0003980705610565

#### in Bibtex Style

@conference{icinco12,

author={Josenalde B. de Oliveira and Marcus V. A. Fernandes and Leonardo R. L. Teixeira},

title={Modeling and Simulation of a Temperature Robust Control in Grain Drying Systems for Thermal Damage Reduction},

booktitle={Proceedings of the 9th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,},

year={2012},

pages={561-565},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0003980705610565},

isbn={978-989-8565-21-1},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the 9th International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,

TI - Modeling and Simulation of a Temperature Robust Control in Grain Drying Systems for Thermal Damage Reduction

SN - 978-989-8565-21-1

AU - B. de Oliveira J.

AU - V. A. Fernandes M.

AU - R. L. Teixeira L.

PY - 2012

SP - 561

EP - 565

DO - 10.5220/0003980705610565