Frequency domain design of a series structure of robust controllers for multi-input single-output systems
type: Item
instance of: scholarly article
title: Frequency domain design of a series structure of robust controllers for multi-input single-output systems
zbMATH Open document ID: 1427.93152
DOI: 10.1155/2018/7531260
author: Montserrat Gil-Martínez
author: Javier Rico-Azagra
author: Jorge Elso
published in: Mathematical Problems in Engineering
publication date: 2019-02-08T00:00:00Z
review text: Summary: The regulation of a disturbed output can be improved when several manipulated inputs are available. A popular choice in these cases is the series control scheme, characterized by (1) a sequential intervention of loops and (2) faster loops being reset by slower loops, to keep their control action around convenient values. This paper tackles the problem from the frequency-domain perspective. First, the working frequencies for each loop are determined and closed-loop specifications are defined. Then, Quantitative Feedback Theory (QFT) bounds are computed for each loop, and a sequential loop-shaping of controllers takes place. The obtained controllers are placed in a new series architecture, which unlike the classical series architecture only requires one controller with integral action. The benefits of the method are greater as the number of control inputs grow. A continuous stirred tank reactor (CSTR) is presented as an application example.
Mathematics Subject Classification ID: 93C80
Mathematics Subject Classification ID: 93A15
Mathematics Subject Classification ID: 93B51
zbMATH DE Number: 7019465
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2018/7531260
OpenAlex ID: W2899063744
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description: scientific article; zbMATH DE number 7019465