Design of continuous controllers using a multiobjective differential evolution algorithm with spherical pruning

Authors:
Gilberto Reynoso-Meza;Javier Sanchis;Xavier Blasco;Miguel Martínez
Affiliations:
Instituto Universitario de Automática e Informática Industrial, Universidad Politécnica de Valencia, Valencia, España;Instituto Universitario de Automática e Informática Industrial, Universidad Politécnica de Valencia, Valencia, España;Instituto Universitario de Automática e Informática Industrial, Universidad Politécnica de Valencia, Valencia, España;Instituto Universitario de Automática e Informática Industrial, Universidad Politécnica de Valencia, Valencia, España
Venue:
EvoApplicatons'10 Proceedings of the 2010 international conference on Applications of Evolutionary Computation - Volume Part I
Year:
2010

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Abstract

Controller design has evolved to a multiobjective task, i.e., today is necessary to take into account, besides any performance requirement, robustness requisites, frequency domain specifications and uncertain model parameters in the design process. The designer (control engineer), as Decision Maker, has to select the best choice according to his preferences and the trade-off he wants to achieve between conflicting objectives. In this work, a new multiobjective optimization approach using Differential Evolution (DE) algorithm is presented for the design of (but not limited to) Laplace domain controllers. The methodology is used to propose a set of solutions for an engineering control benchmark, all of them non-dominated and pareto-optimal. The obtained results shows the viability of this approach to give a higher degree of flexibility to the control engineer at the decision making stage.