Abstract：Permanent magnet synchronous motors (PMSM) used in high-speed electric spindle can improve the efficiency and power of electric spindles, but their cogging torque can cause vibration and noise problems. Based on the theory of PMSM, influencing factors and restraining measures of cogging torque were discussed. Aiming at the permanent magnet synchronous electric spindles (PMSES) with two different rotor structures of built-in PMSM, a step-skewed rotor and a non-skewed rotor, their cogging torques were analyzed theoretically and tested experimentally. On this basis, the dynamic performances of their noise, vibration and speed stability were emphatically studied. The results show that the cogging torque of built-in PMSM is an important factor affecting the vibration and noise of PMSES. Under the same conditions, the step-skewed rotor structure can effectively weaken the cogging torque of PMSES, reduce the vibration and noise, and improve speed stability.
李松生，杨焕钊，何国庆，张国烨，刘扬扬，郑志强. 基于齿槽转矩的永磁同步电主轴动态性能试验研究[J]. 振动与冲击, 2020, 39(20): 216-222.
LI Songsheng,YANG Huanzhao,HE Guoqing,ZHANG Guoye,LIU Yangyang,ZHENG Zhiqiang. Experimental study on dynamic performance of permanent magnet synchronous electric spindles based on cogging torque. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(20): 216-222.
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