Analyses of permanent magnet DC motor stator vibrations

作者：Cao Haixiang; Shen Jingwen; Wang Shanming^*; Mu Jianan; Yang Zhanlu; Hong Jianfeng

来源：Journal of Tsinghua University(Science and Technology), 2017, 57(1): 89-94 and 99.

DOI：10.16511/j.cnki.qhdxxb.2017.21.017

• Electromagnetic force distribution
• Electromagnetic forces
• Exciting forces
• Finite element simulations
• Mode of vibration
• Permanent magnet DC motors
• Structural finite elements
• Vibration

Stator vibrations in permanent magnet DC motors have distinct characteristics which are also useful for analyzing other types of motors. The magnetic fields and the electromagnetic forces in permanent magnet DC motors were analyzed to characterize the physical mechanisms driving the vibrations. The order of the slot-frequency electromagnetic exciting force is not equal to the spatial order of the stator slot-frequency vibration shape. Accurate analyses of the vibrations inputs the magnetic field and electromagnetic force distributions calculated by finite element simulations into a structural finite element simulation to predict the stator vibrations. Experiments must have enough sensors to obtain the vibration mode shape. The predictions agree well with data from DC motor tests.

• 出版日期2017
• 单位清华大学