Brushless DC motor ringing noise: A case study

Authors

  • Sylvain Nadeau Siemens Canada Ltd, Adelaide, Australia

Keywords:

Acoustic noise, Magnets, Rotors (windings), Viscoelasticity, Brushless direct current motors

Abstract

The rotor's mode in a brushless DC motor at around 1600 Hz resonates at certain a speed due to various electromagnetic forces. The addition of a viscoelastic material between part of the magnets and the rotor increases the mode's damping and reduces the ringing noise by more than 10 db(A). This provides an efficient way of reducing the noise without making changes to the motor.

Published

2000-09-01

How to Cite

1.
Nadeau S. Brushless DC motor ringing noise: A case study. Canadian Acoustics [Internet]. 2000Sep.1 [cited 2021Apr.17];28(3):40-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1280

Issue

Section

Proceedings of the Acoustics Week in Canada