关键词:高速电主轴;谐波;电磁力矩;振动中图分类号:TH13 ;TM921 　 　 　 文献标识码:A　 　 　 文章编号:1003⁃8728(2017)05⁃000⁃Formation Mechanism of Harmonic Torque and Effect onVibration of High⁃speed Motorized SpindleKang Huimin 1,2 , Zhang Chaoxing 1,2 , Liu Yanyu 1,2 , Xu Gongyuan 1,2 , Hu Binliang 11.College of Mechanical and Electrical Engineering,Hunan University of Science and Technology, Hunan Xiangtan 411201, China2. Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult⁃to⁃Cut Material,Hunan University of Science and Technology, Hunan Xiangtan 411201, Chinaæèççöø÷÷Abstract: The dynamic performance of high speed motorized spindle was governed by both bearing and highfrequency harmonic torque. Aiming at extracting their characteristic frequencies for proper control, the calculationformulae for steady and ripple harmonic electromagnetic torque were derived from different electromagnetic force onthe basis of Fourier Transform of the waveform of the air gap magnetic field. The conclusion