A Computer Modeling Characteristics of Brushless DC Motors in Medical Application

Basim Abdulkareem Farhan, Amir. M. Khalaf, Tarik R. Al-Khateeb

© 2024 Basim Abdulkareem Farhan, published by UIKTEN. This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International. (CC BY-NC 4.0).

Citation Information: SAR Journal. Volume 7, Issue 4, Pages 362-368, ISSN 2619-9955, https://doi.org/10.18421/SAR74-10, December 2024.

Received: 09 September 2024.
Revised:  14 November 2024.
Accepted: 20 November 2024.
Published: 27 December 2024.

Abstract:

This work presents a modeling process for Brushless DC motors (BLDCMs) that considers both magnetic saturation and reluctance variation. DC motors are employed in diagnostic equipment like blood analysers and centrifuges. They enable the rotation and mixing of samples, facilitating the analysis of blood, urine, and other biological substances. Dental Tools: DC motors power dental equipment such as dental drills and handpieces. Two classes of Brushless DC motors were introduced for modeling using MATLAB simulation that involved reluctance variation: the non-uniform air gap model and the uniform air gap model. The characteristics of torque-speed for the two models are studied and compared. Non-uniform air gap mathematical model was subsequently adopted to study the effects of magnetic saturation. When magnetic saturation is incorporated in this work, some constant parameters in the models developed are transformed into variables that are dependent upon current variation.

Keywords – BLDCM, DC motor, machine modeling, MATLAB simulation.

                   

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