Aguila-Camacho, NorelysLe Roux, Johan DerikDuarte-Mermoud, Manuel A.Orchard, Marcos E.2017-04-072017-05Aguila-Camacho, N, Le Roux, JD, Duarte-Mermoud, MA & Orchard, ME 2017, 'Control of a grinding mill circuit using fractional order controllers', Journal of Process Control , vol. 53, pp. 80-94.0959-1524 (print)1873-2771 (online)10.1016/j.jprocont.2017.02.012http://hdl.handle.net/2263/59722This paper presents the design and application of fractional single-input-single-output (SISO) controllers to a grinding mill circuit, which is a multiple-input-multiple-output (MIMO) process. Two kinds of controllers are presented: fractional order proportional-integral (FOPI) controllers, and a combination of FOPI and fractional order model reference adaptive controllers (FOMRAC). The parameters of the controller are tuned using o -line particle swarm optimization. In the presence of disturbances and process noise, the SISO fractional controllers achieve similar or better performance compared to Linear Model Predictive Control (LMPC).en© 2017 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Process Control. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Journal of Process Control, vol. 53, pp. 80-94, 2017. doi : 10.1016/j.jprocont.2017.02.012.Fractional order controllersModel reference adaptive controlGrinding mill circuitParticle swarm optimization (PSO)Process controlComminutionSingle-input-single-output (SISO)Multiple-input-multiple-output (MIMO)Postprint Article