An Explicit Reference Governor for Linear Sampled-Data Systems With Disturbance Inputs and Uncertain Time Delays

In this article, we propose a novel reference governor (RG) scheme for prestabilized linear sampled-data systems to satisfy pointwise-in-time constraints in the presence of bounded disturbances and uncertain input and/or measurement delays. Based on an explicit bound on the system response to step c...

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Bibliographic Details
Published inIEEE transactions on automatic control Vol. 68; no. 1; pp. 440 - 447
Main Authors Li, Nan, Geng, Sijia, Kolmanovsky, Ilya, Girard, Anouck
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Closed form solutions
Constrained control
Convergence
Data systems
Delay effects
Delays
Exact solutions
Linear systems
Measurement uncertainty
Optimization
reference governors
Reference signals
Sampled data systems
time delays
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Summary:In this article, we propose a novel reference governor (RG) scheme for prestabilized linear sampled-data systems to satisfy pointwise-in-time constraints in the presence of bounded disturbances and uncertain input and/or measurement delays. Based on an explicit bound on the system response to step changes in the reference signal derived using the logarithmic norm, this RG scheme yields a closed-form solution for updating the reference signal at sample time instants that guarantees both sample-time and intersample constraint satisfaction. Due to its closed-form expression, the proposed RG scheme requires minimum computational effort and is thereby suitable for systems with limited computing capability.
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ISSN:0018-9286
1558-2523
DOI:10.1109/TAC.2022.3140379