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Characteristics of Torque and Vibration-Noise take into account Permanent Magnet Overhang of BLDC Motor for Robots  

Kang, Gyu-Hong ((주)모터넷인터내셔날)
Kim, Duck-Hyun (건동대학교 기전공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.55, no.7, 2006 , pp. 346-352 More about this Journal
Abstract
In Brushless DC Motor, there are Permanent Magnets (PMs) with driving circuit and sensor for detecting to rotor position and rotation speed. In the case of using hall IC sensor which response to magnetic flux, that is required to additional sensor magnet for rotor position detecting. Most of BLDC motor, However, take asymmetrical overhang of PM in rotor instead of additional sensor magnet for operating of hall IC sensor. The asymmetrical overhang of PM occur rotor thrust to z-axis direction that is lead to not only damage of bearing but also intensive noise and vibration. Therefore, the analysis of magnet overhang effect in the side of vibration and drive to hall If sensor is required to precise. In this paper, 2-D Finite Element Method is used to solve precise field computation and thrust of z-axis direction considering asymmetrical magnet overhang. And also the z-axis thrust from the analysis result is compared to experimental result. In conclusion, the purpose of this paper minimize to noise and vibration of BLDC Motor as analyzes to asymmetrical magnet overhang effect.
Keywords
BLDC Motor; Asymmetrical Overhang; Thrust to Z-Axis Direction; Noise And Vibration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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