Fractional Order Systems Identification Based on Subspace Method in Time-domain
This paper focuses on the identi.cation of fractional commensurate order systems, which described in state space equation form. A novel identi.cation approach based on short memory principle of fractional differentiation and subspace method, which is from multivariable output error state space (MOESP) family, is proposed. By utilizing the Poisson moment functionals (PMF), the problem which the derivative of higher order of input and output signals should exist is avoided. Based on short memory principle of fractional differentiation, the basic input and output equation for identi.cation is reconstructed. The explicit functional relationship between coe.cient matrixes and fractional differential order is deduced. The numerical simulation validates the approach.
subspace method short memory principle fractional order system identification in time-domain.
Zeng Liao Zhuting Zhu Shu Liang Cheng Peng Yong Wang
Department of Automation, University of Science and Technology ofChina, Hefei, China Department of Automation, University of Science and Technology of China, Hefei, China
国际会议
The Fifth Symposium on Fractional Differentiation and Its Applications(第五届国际自动控制联合会分数阶导数及其应用会议)
南京
英文
1-7
2012-05-14（万方平台首次上网日期，不代表论文的发表时间）