Identification and control of integrative MIMO systems using pattern search algorithms: An application to irrigation channels

Authors:
J. Herrera;A. Ibeas;M. De La Sen
Affiliations:
Departament de Telecomunicació i d'Enginyeria de Sistemes, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra. Barcelona, Spain;Departament de Telecomunicació i d'Enginyeria de Sistemes, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra. Barcelona, Spain;Departamento de Electricidad y Electrónica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, P.O. 644, 48080 Bilbao, Vizcaya, Spain
Venue:
Engineering Applications of Artificial Intelligence
Year:
2013

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Abstract

This paper deals with the delay identification and control of irrigation channels, modelled as lumped-parameter time delay systems, focusing on the difficulties imposed by the transport delay. The adopted control scheme is based on a Modified Smith Predictor, where the delay estimation is implemented using a multi-model scheme in combination with a Pattern Search Method. Thus, the problem of delay estimation is reduced to an optimization problem whose solution is implemented by Pattern Search Techniques. Simulation examples show the effectiveness of the proposed technique in practice, being able to deal with constant and time-varying delays for which an excellent behaviour is obtained.