Model reduction using the genetic algorithm and routh approximations

资源类型: 资源大小: 文档分类:工业技术 上传者:马维英


【作者】 Li  Hongxing  Lu  Jinshi  Yan  Hongshu 

【关键词】model reduction time delay genetic algorithm Routh approximation 

【摘要】A new method of model reduction combining the genetic algorithm(GA) with the Routh approximation method is presented. It is suggested that a high-order system can be approximated by a low-order model with a time delay. The denominator parameters of the reduced-order model are determined by the Routh approximation method, then the numerator parameters and time delay are identified by the GA. The reduced-order models obtained by the proposed method will always be stable if the original system is stable and produce a good approximation to the original system in both the frequency domain and time domain. Two numerical examples show that the method is computationally simple and efficient.