An Estimation Approach for Process Control based on Asymmetric Oscillations

• Autores: José Sánchez Moreno , María Guinaldo Losada , Sebastián Dormido Bencomo , José Luis Fernández Marrón , Antonio Visioli
• Localización: Actas de las XXXVIII Jornadas de Automática / coord. por Hilario López García , 2017, ISBN 978-84-16664-74-0, págs. 181-188
• Idioma: inglés
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• Resumen

  • An estimation procedure for process control has been developed based on the information obtained from the oscillations that a non-linear element as a simple relay introduces in the feedback loop. Features of the method are: (a) the procedure does not demand a priori process information, (b) non-iterative algorithms are needed to derive the process parameters, (c) only one test is needed, and (d) it allows identifying the process at a user-specified phase lag in the third quadrant. The method is presented for estimation of most common transfer functions found in chemical and process industry: integrators, first-, second- as well as processes with non-minimum-phase dynamics.