Features of using low-pass filter for small signal demodulation in phase-locking motor drive
https://doi.org/10.25206/1813-8225-2024-189-73-78
EDN: JYGOQK
Abstract
Phase-locking motor drive based on phase-lock principal provides high accuracy and wide shaft speed range. А low-pass filter is used for PWM-signal demodulation in phase-lock loop. This type of demodulator limits loop bandwidth and working range of motor drive. The main purpose of this article is to analyze low-pass filter influence on motor drive dynamic characteristics in low shaft speed area. The authors developed Matlab Simulink model to researcher phase-locking motor drive working in synchronous mode. As a result the dependence of angular velocity ripple versus rotational speed is obtained. The choosing condition of low-pass filter time constant is defined for different shaft speed area by using the obtained dependence. The received results can be applicable for design precision phase-lock motor drive.
About the Authors
A. V. Bubnov
Omsk State Technical University
Russian Federation
Russian Federation
Bubnov Aleksey Vladimirovich, Doctor of Technical Sciences, Professor, Head of Electrical Engineering Department
AuthorID (SCOPUS): 7004195241
ResearcherID: A-6669-2015
Omsk
A. M. Daynovich
Omsk State Technical University
Russian Federation
Russian Federation
Daynovich Aleksandr Mikhaylovich, Graduate Student of Electrical Engineering Department
Omsk
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Review
For citations:
Bubnov AV, Daynovich AM. Features of using low-pass filter for small signal demodulation in phase-locking motor drive. Omsk Scientific Bulletin. 2024;(1):73-78. (In Russ.) https://doi.org/10.25206/1813-8225-2024-189-73-78. EDN: JYGOQK
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