二自由度行波型超声波电机定子的优化研究

傅平，胡锡幸，郭吉丰

Optimization research of stator with two degree-of-freedom traveling-wave spherical ultrasonic motor

FU Ping， HU Xi-xing， GUO Ji-feng

电工电能新技术 . 2015, (5): 30 -34 .