Robustness of zero shifting via generalized sampled-data hold functions

In this paper we study robustness and sensitivity properties of a sampled-data feedback system with a generalized sampled-data hold function (GSHF). We argue that shifting non-minimum phase zeros using GSHF control can lead to difficulties unless the zero is outside the closed-loop bandwidth.

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Bibliographic Details
Published in:IEEE transactions on automatic control 1997-12, Vol.42 (12), p.1681-1692
Main Authors: Freudenberg, J.S., Middleton, R.H., Braslavsky, J.H.
Format: Article
Language:English
Subjects:
Analytical models
Applied sciences
Bandwidth
Computer science
control theory
systems
Control system analysis
Control systems
Control theory. Systems
Digital control
Exact sciences and technology
Feedback
Poles and zeros
Robust control
Robustness
Sensitivity analysis
Time varying systems
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Description
Summary:In this paper we study robustness and sensitivity properties of a sampled-data feedback system with a generalized sampled-data hold function (GSHF). We argue that shifting non-minimum phase zeros using GSHF control can lead to difficulties unless the zero is outside the closed-loop bandwidth.
ISSN:0018-9286
1558-2523
DOI:10.1109/9.650017