Ortalama farksal gelişim algoritması ile bilineer sistem kimliklendirme

Abstract

Bu çalışmada, bilineer sistem kimliklendirme problemi için ortalama farksal gelişim (average differential evolution-ADE) algoritması önerilmiştir.  Doğrusal olmayan sisteme ait parametrelerin ADE tabanlı bilineer model üzerinden kestirimi gerçekleştirilmiştir. Bilinmeyen sistem çıkışı ile bilineer model çıkışı arasındaki Ortalama Karesel Hata (Mean Square Error, MSE) performans ölçütü olarak kullanılmıştır.  Önerilen algoritmanın performansı, hem farklı sezgisel algoritmaların kullanıldığı benzetim çalışmaları ile hem de literatürde rapor edilmiş diğer metotlar ile karşılaştırılmıştır.  Karşılaştırmalı sonuçlarda, ADE tabanlı modelleme ile hata değerlerinin azaldığı ve hesaplanan parametre değerlerinin doğruluk oranının arttığı görülmüştür.  Hızlı bir yakınsama ile global çözüme ulaşma kabiliyetine sahip olan ADE algoritması, parametre kestirimi uygulamaları için etkin bir araç olarak kullanılabilir.

Keywords

• Bilineer sistem,sistem kimliklendirme,sezgisel algoritmalar

Bilinear system identification with average differential evolution algorithm

Abstract

In this paper, average differential evolution (ADE) algorithm is proposed for bilinear system identification problem.  The parameters of the nonlinear system were estimated using ADE based bilinear model.  The mean square error (MSE) between the unknown system output and the bilinear model output is used as the performance criterion.  The performance of the proposed algorithm is compared with both the simulation studies using different heuristic algorithms and other methods reported in the literature.  The comparative results show that the ADE based modeling reduces the error values and increases the accuracy of the calculated parameter values.  The ADE algorithm, which has global convergence capability with fast convergence, can be used as an effective tool for parameter estimation applications.

Keywords

• Bilinear system,system identification,meta-heuristic algorithms

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