Improving the efficiency of a hollow ultrasonic motor by optimizing the stator's effective electromechanical coupling

Jun Liu1, Ruikun Niu1, Hua Zhu1

  • 1State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu Province, China.

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