Decentralized Control in the Frequency Domain and in the Time Domain

Reduced sensitivity within a constrained frequency range has been linked to decentralized control, particularly in cases where the multivariable system exhibits weak coupling, such as being ultimately diagonally dominant, particularly at high frequencies. Presented is an innovative control method na...

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Published inInternational journal of control, automation, and systems Vol. 22; no. 10; pp. 3052 - 3067
Main Authors Bensoussan, David, Ghodbane, Azeddine, Hammami, Maher
Format Journal Article
LanguageEnglish
Published Bucheon / Seoul Institute of Control, Robotics and Systems and The Korean Institute of Electrical Engineers 01.10.2024
Springer Nature B.V
제어·로봇·시스템학회
Subjects
Adaptive control
Compensators
Control
Control methods
Control stability
Decentralized control
Engineering
Frequency domain analysis
Frequency ranges
Frequency response
High gain
Linear control
Mechatronics
Multivariable control
Regular Papers
Robotics
Robust control
제어계측공학
optimization of MIMO time
frequency response performances
Decentralized control
quasi-linear control
sensitivity reduction
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Summary:Reduced sensitivity within a constrained frequency range has been linked to decentralized control, particularly in cases where the multivariable system exhibits weak coupling, such as being ultimately diagonally dominant, particularly at high frequencies. Presented is an innovative control method named B-control aimed at achieving decentralized control, focusing on crafting a high-gain diagonal compensator customized for a multi-input-multi-output (MIMO) frequency response system that is both unstable and invertible. This approach integrates quasi-linear control with sensitivity considerations, offering the advantage of simultaneous optimization in both the time and frequency domains. The proposed method results in less conservative controller gains determined by leveraging the multivariable Nyquist criteria, thus enhancing practicality. Robust stability and adaptive control schemes can also benefit from the advantages of the B-control method.
Bibliography:http://link.springer.com/article/10.1007/s12555-023-0708-9
ISSN:1598-6446
2005-4092
DOI:10.1007/s12555-023-0708-9