Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (6): 134-139.doi: 10.3969/j.issn.1000-565X.2010.06.025

• Mechanical Engineering • Previous Articles     Next Articles

Improvement in Speed Stability of Micro Space Motor with Temperature Compensation

Li Yi-bo  Huang Ming-hui   

  1. College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,Hunan,China
  • Received:2009-08-12 Revised:2009-12-03 Online:2010-06-25 Published:2010-06-25
  • Contact: 李毅波（1981-），男，博士生，主要从事机械设备数值仿真研究． E-mail:yibo．li@126．com
  • About author:李毅波（1981-），男，博士生，主要从事机械设备数值仿真研究．
  • Supported by:

    国家“973”计划项目（2005CB724102）

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Abstract:

In order to find a solution to the temperature rise of the main structures of micro space motors caused by lubrication,the temperature distributions of motor components in the status of rotating and stopping are computed based on the theory of SKF bearing friction moment,with the help of MSC.MARC.It is found that,in the rotating status,as the temperature of the inner rings is always higher than that of the covers,the lubricating oil may diffuse towards the covers,which results in the lubricity degradation of bearings and further results in the speed instability;and that a 8-W temperature compensation for the framework face may effectively cause the temperature of the inner rings to be lower than that of the covers.Simulated and experimental results show that,with temperature compensation,the motor rotates more stably and satisfies the speed stability requirements well.

Key words: temperature compensation, speed stability, lubrication, micro motor, finite element analysis