Sound-based Speed Estimation of the Three-phase Induction Motor

XVII International Conference on Systems, Automatic Control and Measurements, SAUM 2024 (pp. 177-180)

АУТОР(И) / AUTHOR(S): Bojan Banković , Filip Filipović , Nebojša Mitrović , Milan Radić , Vojkan Kostić

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DOI:  10.46793/SAUM24.177B

САЖЕТАК / ABSTRACT:

The accurate estimation of speed in three-phase induction motors is crucial for their efficient control, operation or diagnostics. Traditional methods often rely on tachometers or encoders, which can be expensive and prone to mechanical wear and tear and can present overkill for applications where knowledge of only the static speed point is of interest. This paper explores an innovative, non-intrusive technique for estimating the speed of three-phase induction motors using sound analysis. By capturing and analyzing the acoustic signals emitted by the motor during operation, it is possible to extract characteristic frequencies corresponding to the rotational speed. Experimental results demonstrate the viability of this method, showing a high correlation between the estimated speed from sound analysis and the actual motor speed measured using conventional methods. This approach offers a cost-effective, reliable, maintenance-free and highly mobile alternative for speed estimation in industrial and educational applications, contributing to the advancement of smart motor control systems. This method is suitable for good estimation of static speed points during laboratory exercises where static characteristics are of interest.

КЉУЧНЕ РЕЧИ / KEYWORDS:

speed estimation, induction motor speed, sound analysis, smart motor control system

ПРОЈЕКАТ/ ACKNOWLEDGEMENT:

This work was supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia [grant number 451-03-65/2024-03/200102].

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