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Steady‐State Dual‐Rate Open‐Loop Transfer Function Model‐Based Ripple‐Free Design
Author(s) -
Yasui Ryota,
Kawaguchi Natsuki,
Sato Takao,
Araki Nozomu,
Konishi Yasuo
Publication year - 2021
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.23442
Subject(s) - control theory (sociology) , ripple , steady state (chemistry) , dual (grammatical number) , transfer function , interval (graph theory) , oscillation (cell signaling)
The dual‐rate control system, in which the sampling interval is an integer multiple of the holding interval, is designed using the null‐space of the steady‐state characteristic of the controlled plant. In the proposed method, a dual‐rate control law is extended independent of the steady‐state discrete‐time output response. As a result, the intersample ripples caused by the input oscillation are eliminated by reallocating the control input. The proposed method based on the steady‐state characteristic is a simple strategy compared with conventional methods based on the dynamic characteristic. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.