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The use of genetic algorithms for nonlinear controller design

By E.W. McGookin, D.J. Murray-Smith and T.I. Fossen

Abstract

The optimisation of nonlinear controller parameters by genetic algorithm (GA) is explored in this paper. The type of nonlinear controller that is considered is derived from sliding mode control theory, which is known for its robust properties. The GA technique for optimisation has developed from its foundation in Darwinian evolution into a powerful optimisation algorithm that can be used for parametric design. Both sliding mode control theory and GA theory are presented. The use of an elite GA for sliding mode controller parameter optimisation is illustrated by means of an example which involves the design of a heading controller for a scale model of a supply ship. A GA optimised controller solution is presented. The performance of this controller is illustrated through simulation studies and trials in a model ship water tank facility. These evaluations illustrate that both the sliding model control law and GA technique are effective design methods for automated design for nonlinear controllers

Topics: QA76, TJ, TK, VM
Year: 2000
OAI identifier: oai:eprints.gla.ac.uk:68350
Provided by: Enlighten
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