DocumentCode :
1403130
Title :
Reconstruction of continuous-time systems from their discretizations
Author :
Chen, Tongwen ; Miller, Daniel
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Volume :
45
Issue :
10
fYear :
2000
Firstpage :
1914
Lastpage :
1917
Abstract :
The so-called zero-order hold discretization or step-invariant transformation is not one-to-one and hence one cannot recover the continuous-time system from its discretized model without further information. Here, we show that it is possible to reconstruct a continuous-time rational transfer function based on discretized models at several, suitably chosen, sampling rates. The dual results in discrete time are also studied: reconstruction of discrete-time systems is possible based on several down-sampled versions.
Keywords :
continuous time systems; discrete time systems; poles and zeros; transfer functions; SISO systems; continuous-time systems; discrete-time systems; discretization; rational transfer function; sampling rates; step-invariant transformation; zero-order hold; Books; Control system synthesis; Digital control; Image reconstruction; Mathematical model; Poles and zeros; Sampling methods; Sufficient conditions; System identification; Transfer functions;
fLanguage :
English
Journal_Title :
Automatic Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9286
Type :
jour
DOI :
10.1109/TAC.2000.880998
Filename :
880998
Link To Document :
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