Resumen de An Estimation Approach for Process Control based on Asymmetric Oscillations
José Sánchez Moreno, María Guinaldo Losada, Sebastián Dormido Bencomo, José Luis Fernández Marrón, Antonio Visioli
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.
