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Constrained-group-delay-optimized multiple-resonator-based harmonic analysis

Authorized Users Only
2021
Authors
Kušljević, Miodrag D.
Tomić, Josif J.
Poljak, Predrag
Article (Published version)
Metadata
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Abstract
Recently, a multiple-resonator structure was proposed as a robust and computationally efficient tool for harmonic analysis. Two trivial cases have been previously observed. The first case exhibits good out-of-band suppression and elimination of unwanted harmonics, but with a high latency. In the second case, a phase frequency response around the passband centre is zero-flat, that provides fast estimates. However, in this case, resonant peaks at the ends of the passband and high interharmonic gains cause large overshoots. In general, the basic algorithm performance requirements: selectivity and speed, are contradictory which makes it impossible to completely fulfil both of them. In this paper, the Constrained Linear Least-Squares (CLLS) optimization method is used to obtain a compromise solution. As a result, the resonant peaks in the passband are avoided and side lobes are mitigated, simultaneously minimizing the group delay in the middle of the passband. Performed simulations confirme...d the effectiveness of the proposed algorithm.

Keywords:
Constrained Linear Least-Squares (CLLS) / Frequency response / Group delay / Harmonic analysis / Multiple-resonator / Recursive algorithm
Source:
Tehnički Vjesnik, 2021, 28, 4, 1244-1252
Publisher:
  • Slavonski Brod: Strojarski fakultet

DOI: 10.17559/TV-20180327173716

ISSN: 1330-3651; 1848-6339

WoS: 000675891000023

Scopus: 2-s2.0-85111557348
[ Google Scholar ]
1
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4776
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Kušljević, Miodrag D.
AU  - Tomić, Josif J.
AU  - Poljak, Predrag
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4776
AB  - Recently, a multiple-resonator structure was proposed as a robust and computationally efficient tool for harmonic analysis. Two trivial cases have been previously observed. The first case exhibits good out-of-band suppression and elimination of unwanted harmonics, but with a high latency. In the second case, a phase frequency response around the passband centre is zero-flat, that provides fast estimates. However, in this case, resonant peaks at the ends of the passband and high interharmonic gains cause large overshoots. In general, the basic algorithm performance requirements: selectivity and speed, are contradictory which makes it impossible to completely fulfil both of them. In this paper, the Constrained Linear Least-Squares (CLLS) optimization method is used to obtain a compromise solution. As a result, the resonant peaks in the passband are avoided and side lobes are mitigated, simultaneously minimizing the group delay in the middle of the passband. Performed simulations confirmed the effectiveness of the proposed algorithm.
PB  - Slavonski Brod: Strojarski fakultet
T2  - Tehnički Vjesnik
T1  - Constrained-group-delay-optimized multiple-resonator-based harmonic analysis
VL  - 28
IS  - 4
SP  - 1244
EP  - 1252
DO  - 10.17559/TV-20180327173716
ER  - 
@article{
author = "Kušljević, Miodrag D. and Tomić, Josif J. and Poljak, Predrag",
year = "2021",
abstract = "Recently, a multiple-resonator structure was proposed as a robust and computationally efficient tool for harmonic analysis. Two trivial cases have been previously observed. The first case exhibits good out-of-band suppression and elimination of unwanted harmonics, but with a high latency. In the second case, a phase frequency response around the passband centre is zero-flat, that provides fast estimates. However, in this case, resonant peaks at the ends of the passband and high interharmonic gains cause large overshoots. In general, the basic algorithm performance requirements: selectivity and speed, are contradictory which makes it impossible to completely fulfil both of them. In this paper, the Constrained Linear Least-Squares (CLLS) optimization method is used to obtain a compromise solution. As a result, the resonant peaks in the passband are avoided and side lobes are mitigated, simultaneously minimizing the group delay in the middle of the passband. Performed simulations confirmed the effectiveness of the proposed algorithm.",
publisher = "Slavonski Brod: Strojarski fakultet",
journal = "Tehnički Vjesnik",
title = "Constrained-group-delay-optimized multiple-resonator-based harmonic analysis",
volume = "28",
number = "4",
pages = "1244-1252",
doi = "10.17559/TV-20180327173716"
}
Kušljević, M. D., Tomić, J. J.,& Poljak, P.. (2021). Constrained-group-delay-optimized multiple-resonator-based harmonic analysis. in Tehnički Vjesnik
Slavonski Brod: Strojarski fakultet., 28(4), 1244-1252.
https://doi.org/10.17559/TV-20180327173716
Kušljević MD, Tomić JJ, Poljak P. Constrained-group-delay-optimized multiple-resonator-based harmonic analysis. in Tehnički Vjesnik. 2021;28(4):1244-1252.
doi:10.17559/TV-20180327173716 .
Kušljević, Miodrag D., Tomić, Josif J., Poljak, Predrag, "Constrained-group-delay-optimized multiple-resonator-based harmonic analysis" in Tehnički Vjesnik, 28, no. 4 (2021):1244-1252,
https://doi.org/10.17559/TV-20180327173716 . .

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