Limit Cycle Prediction Based on Evolutionary Multiobjective Formulation

Katebi, K and Tawfik, Hissam and Katebi, S.D. (2009) Limit Cycle Prediction Based on Evolutionary Multiobjective Formulation. Mathematical Problems in Engineering, 2009. pp. 1-17. ISSN 1563-5147

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Official URL: http://www.hindawi.com/journals/mpe/2009/816707/

Abstract

This paper is concerned with an evolutionary search for limit cycle operation in a class of nonlinear systems. In the first part, single input single output (SISO) systems are investigated and sinusoidal input describing function (SIDF) is extended to those cases where the key assumption in its derivation is violated. Describing function matrix (DMF) is employed to take into account the effects of higher harmonic signals and enhance the accuracy of predicting limit cycle operation. In the second part, SIDF is extended to the class of nonlinear multiinput multioutput (MIMO) systems containing separable nonlinear elements of any general form. In both cases linearized harmonic balance equations are derived and the search for a limit cycle is formulated as a multiobjective problem. Multiobjective genetic algorithm (MOGA) is utilized to search the space of parameters of theoretically possible limit cycle operations. Case studies are presented to demonstrate the effectiveness of the proposed approach.

Item Type: Article
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Faculty / Department: Faculty of Science > Mathematics and Computer Science
Depositing User: Users 3 not found.
Date Deposited: 05 Mar 2014 15:34
Last Modified: 09 Sep 2016 13:13
URI: http://hira.hope.ac.uk/id/eprint/249

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