Identifying the Fractional-Order Systems with Frequency Responses: A Maximum Likelihood Algorithm

摘要：

System modeling plays an important role in radar servo system design with high precision. In this article a maximum likelihood identification algorithm of fractional-order systems with frequency responses is presented. The algorithm is deduced in detail and an equivalent criterion function is obtained from primary likelihood function. Both of the model coefficients and differentiation order estimation are considered in this paper, where two methods of estimating the fractional commensurate order are discussed. One is order scanning method and the other is simultaneous estimation of model coefficients and the differentiation order. Several simulation results are presented, together with the analysis of noise influences.

关键词： fractional order systems frequency domain system identification maximum likelihood

作者: Wang LI Cheng PENG Yong WANG

作者单位: East China Research Institute of Electronic Engineering, Hefei, ANHUI, CHINA Department of Automation, University of Science and Technology of China, Hefei, ANHUI, CHINA

会议类型: 国际会议

会议名称: 2011 IEEE CIE International Conference on Radar(2011年IEEE国际雷达会议RADAR 2011)

会议地点: 成都

会议语种:英文

页码: 1943-1948

在线出版日期: 2011-10-24（万方平台首次上网日期，不代表论文的发表时间）