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Virtual Feedback Reference Tuning Using Closed Loop Step Response Data in Frequency Domain
Author(s) -
MASUDA SHIRO,
KONG XIANDA,
UDAGATA KOKI,
MATSUI YOSHIHIRO
Publication year - 2017
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.11971
Subject(s) - frequency domain , control theory (sociology) , computer science , controller (irrigation) , frequency response , step response , signal (programming language) , transformation (genetics) , algorithm , domain (mathematical analysis) , mathematics , engineering , control engineering , artificial intelligence , control (management) , electrical engineering , gene , agronomy , computer vision , biology , programming language , mathematical analysis , biochemistry , chemistry
SUMMARY The paper gives a controller tuning method using a virtual reference feedback tuning (VRFT) approach in frequency domain. While the original VRFT uses a data‐driven performance index based on input/output data directly, the proposed one derives a frequency domain performance index based on the Fourier transformation of one‐shot experimental input‐output data. The frequency domain performance index enables the optimal prefilter to be straightforwardly designed without using the spectral density of the collected input signal. Hence, the proposed one outperforms the original one when the input and output data are collected from the closed loop step response. The effectiveness of the proposed method is illustrated through a numerical example.