Robust digital control of systems with time delay (the Smith predictor revisited)

The design of robust digital controllers for systems with time delay is investigated. A particular class of digital controller is considered, namely those for which the closed-loop poles include the poles of the system to be controlled. Robust design with respect to time delay variations requires th...

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Bibliographic Details
Published in:International journal of control 1995-08, Vol.62 (2), p.325-347
Main Author: LANDAU, I. D.
Format: Article
Language:English
Subjects:
Applied sciences
Computer science
control theory
systems
Control system synthesis
Control theory. Systems
Exact sciences and technology
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Summary:The design of robust digital controllers for systems with time delay is investigated. A particular class of digital controller is considered, namely those for which the closed-loop poles include the poles of the system to be controlled. Robust design with respect to time delay variations requires the introduction of additional closed-loop poles and/or reduction of the gain of the feedback path at high frequencies (near 0-5 f s , where f s is sampling frequency). Relationships with other robustification procedures are examined.
ISSN:0020-7179
1366-5820
DOI:10.1080/00207179508921546