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Identification of time delay model for integrating processes from closed-loop step test

Authors Liu, Tao HKUST affiliated (currently or previously)
Gao, Furong View this author's profile
Zhao, Chunhui HKUST affiliated (currently or previously)
Issue Date 2009
Source Proceedings of 2009 7th Asian Control Conference, ASCC 2009 , 2009, p. 615-619
Summary Based on a closed-loop step response test, a model identification method is proposed for integrating processes with time delay in this paper. By introducing a damping factor to the closed-loop step response for realization of the Laplace transform, a frequency response estimation algorithm is developed in terms of the closed-loop control structure used for identification. Correspondingly, two model identification algorithms are derived analytically for obtaining the widely used low-order process models of first-order-plus-dead- time (FOPDT) and second-order-plus-dead-time (SOPDT), respectively. Illustrative examples from the recent literature are used to demonstrate the effectiveness and merits of the proposed identification algorithms. ©2009 ACA.
ISBN 978-1-4244-5440-2
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Language English
Format Conference paper
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