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Identification of system with distributed-order derivatives

  • Jun-Sheng Duan EMAIL logo and Yu Li
Published/Copyright: October 28, 2021

Abstract

The identification problem for system with distributed-order derivative was considered. The order-weight distribution was approximated by piecewise linear functions. Then the discretized order-weight distribution was solved in frequency domain by using the least square technique based on the Moore-Penrose inverse matrix. Finally, five representative numerical examples were used to illustrate the validity of the method. The identification results are satisfactory, especially for the continuous order-weight distributions. In addition, the overlapped Bode magnitude frequency responses from the identified and exact transfer functions imply the effectiveness of the method.

Acknowledgements

The authors thank the National Natural Science Foundation of China for the support, under Grant No 11772203.

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Received: 2020-06-12
Revised: 2021-08-06
Published Online: 2021-10-28
Published in Print: 2021-10-26

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