Imperial College London
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ProfessorThomasParisini

Faculty of Engineering, Department of Electrical and Electronic Engineering

Chair in Industrial Control, Head of Group for CAP
 
 
 
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Contact

 

+44 (0)20 7594 6240t.parisini Website

 
 
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Location

 

1114Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Pin:2023:10.1109/TCST.2022.3175319,
author = {Pin, G and Chen, B and Fedele, G and Parisini, T},
doi = {10.1109/TCST.2022.3175319},
journal = {IEEE Transactions on Control Systems Technology},
pages = {467--474},
title = {Robust frequency-adaptive quadrature phase-locked-loops with lyapunov-certified global stability},
url = {http://dx.doi.org/10.1109/TCST.2022.3175319},
volume = {31},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This work describes and compares two phase-locked-loop (PLL) algorithms aimed at tracking a biased sinusoidal signal with unknown frequency, amplitude, and phase, with inherent robustness to dc offset. The proposed methods endow quadrature PLLs, renowned for their excellent tracking performance, with frequency-adaptation capability, while providing robust global stability certificates. The large-gain global stability, proved by Lyapunov-like arguments borrowed from adaptive control theory, represents a major benefit when compared to the conventional PLLs, whose convergence instead can be proved only locally by small-signal analysis or small-gain assumptions. In this connection, the proposed algorithms represent the first frequency-adaptive and dc-bias rejecting PLL-type architectures with Lyapunov-certified global stability. When used for signal tracking, the proposed methods are shown to outperform the adaptive observer, especially in noisy conditions. Moreover, they provide more accurate frequency estimates than existent frequency-adaptive PLLs, showing enhanced robustness in facing both phase-noise and measurement perturbations.
AU  - Pin,G
AU  - Chen,B
AU  - Fedele,G
AU  - Parisini,T
DO  - 10.1109/TCST.2022.3175319
EP  - 474
PY  - 2023///
SN  - 1063-6536
SP  - 467
TI  - Robust frequency-adaptive quadrature phase-locked-loops with lyapunov-certified global stability
T2  - IEEE Transactions on Control Systems Technology
UR  - http://dx.doi.org/10.1109/TCST.2022.3175319
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000800791900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/99678
VL  - 31
ER  -
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