摘要：AbstractAn identification algorithm for arbitrary order fractional system is proposed with frequency domain information. According to the frequency domain characteristics of fractional differential operator, the parameters estimation of the arbitrary order fractional system is transformed into a nonlinear equations problem. The variable damping least square method is applied to solve this nonlinear problem. In order to improve the efficiency of the parameters identification, a method to reduce the number of unknown parameters is also investigated. Numerical results illustrate the effectiveness of the proposed approach.
关键词：Keywordsarbitrary orderfractional system identificationfrequency domainLevenberg-Marquardt algorithm
