Stable reduced-order models for discrete-time systems
Stable reduced-order models for discrete-time systems
- Author(s): M. Farsi ; K. Warwick ; M. Guilandoust
- DOI: 10.1049/ip-d.1986.0019
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- Author(s): M. Farsi 1 ; K. Warwick 2 ; M. Guilandoust 3
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View affiliations
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Affiliations:
1: Department of Electrical & Electronic Engineering, University of Newcastle upon Tyne, Newcastle upon Tyne, UK
2: Department of Engineering Science, University of Oxford, Oxford, UK
3: Department of Chemical Engineering, University of Newcastle upon Tyne, Newcastle upon Tyne, UK
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Affiliations:
1: Department of Electrical & Electronic Engineering, University of Newcastle upon Tyne, Newcastle upon Tyne, UK
- Source:
Volume 133, Issue 3,
May 1986,
p.
137 – 141
DOI: 10.1049/ip-d.1986.0019 , Print ISSN 0143-7054, Online ISSN 2053-793X
The Routh-stability method is employed to reduce the order of discrete-time system transfer functions. It is shown that the Routh approximant is well suited to reduce both the denominator and the numerator polynomials, although alternative methods, such as Padé-Markov approximation, are also used to fit the model numerator coefficients.
Inspec keywords: transfer functions; stability; discrete time systems
Other keywords:
Subjects: Control system analysis and synthesis methods; Stability in control theory; Discrete control systems
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