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Research on Identification Algorithm of Cascade Control System

Author

Listed:
  • Damin Ding
  • Yagang Wang
  • Wei Zhang
  • Wei Chu
  • Ricardo Aguilar-Lopez

Abstract

Aiming at the problem of object model identification of modern industrial process control systems, a new closed-loop moment parameter identification online method based on the data of normal operation of the running system is proposed. In this method, only one step response data of the system is required, and appropriate convergence factors are introduced into the Laplace formula, the trapezoidal integral method is used to calculate the values of two derivatives of the transfer function, then the four unknown parameters of the second-order model can be solved by fitting the data with the least square method, and the target model can be identified. Finally, the simulation results of building different objects through Matlab show that the identification method has general applicability and good robustness with high recognition, and it is not sensitive to noise signals.

Suggested Citation

  • Damin Ding & Yagang Wang & Wei Zhang & Wei Chu & Ricardo Aguilar-Lopez, 2022. "Research on Identification Algorithm of Cascade Control System," Mathematical Problems in Engineering, Hindawi, vol. 2022, pages 1-13, November.
    • Handle: RePEc:hin:jnlmpe:3997081
    DOI: 10.1155/2022/3997081
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