Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2005.11a
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- Pages.275-278
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- 2005
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- 1598-2548(pISSN)
Dynamic Characteristics of Laminated Rotor Core of Electric Motor Products
생산 전동기 로터 적층 코어의 동특성 조사
- Published : 2005.11.01
Abstract
The dynamic characteristics of rotor shafts for electric motors were investigated through the modal tests. The natural frequencies and modal dampings in each manufacturing stage of rotor core assembly were analyzed from the frequency response functions fer all 6 motors of a product model. The deviation of the each individual modal feature was found dependent on the mode shapes as well as the rotor assembly stage. The core stacking itself is known to widen the deviation of modal properties but fellowing processes of rotor bar insertion and swaging are confirmed to reduce the deviation. Finally the equivalent diameter of core part was estimated from the comparison of measured and calculated results to include the stiffness of core part.
Keywords
- Electric Motor;
- Rotor Core;
- Dynamic Stiffness;
- Modal Test;
- Frequency Response Function;
- Natural Frequency;
- Modal Damping;
- Average;
- Standard Deviation;
- Equivalent Diameter