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Asian Journal of Electrical Sciences (AJES)

Editor Dr. Koray Ulgen
Print ISSN : 2249 - 6297
Frequency : Quarterly

Performance Evaluation of Nonlinear PI Controller on the Laboratory Type Spherical Tank Process

Author : T. Bhuvanendhiran and S. Abraham Lincon
Volume 8 No.2 April-June 2019 pp 16-20

Abstract

In this paper, the implementation of Nonlinear PI controller based on error square type is designed and adopted to control of level in a spherical tank process. By use of black box model the system is found as a First order plus Dead Time model (FOPDT). Then the controller tuning strategies has been adopted namely Direct synthesis (IMC), Skogestad (IMC PI), and Nonlinear PI (error square type) tuning. Among all the three controllers tuning the error square type based Nonlinear PI tuning method shows better control performance than the other two controller tuning in terms of performance indices like Integral Square Error (ISE), Integral Absolute Error (IAE) and Time domain specifications.

Keywords

Nonlinear PI, Direct Synthesis IMC PI, Nonlinear Process, SIMC, System Identification

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References

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