[3] LI Xiang, KAN Chaohao, CHENG Yuan, et al.Performance evaluation of a bimodal standing-wave ultrasonic motor considering nonlinear electroelasticity: Modeling and experimental validation［J］. Mechanical Systems and Signal Processing, 2020, 141:106475.1-106475.16.

[7] ZHU Yuanfei, YANG Tianyue, FANG Zhiwei, et al. Contact modeling for control design of traveling wave ultrasonic motors［J］. Sensors and Actuators A Physical, 2020, 310:112037.

[8] SUN Dong, TANG Yujuan, WANG Jiong, et al. Design of an H-shaped linear piezoelectric motor for safety and arming device［J］. Sensors and Actuators A Physical, 2019, 303:111687.

[9] LU Danhong, LIN Qiuxiang, CHEN Bingxun, et al. A single-modal linear ultrasonic motor based on multi vibration modes of PZT ceramics［J］.Ultrasonics, 2020, 107:106158.

[10] YANG Chengping, XIE Kunju, CHANG Jenyuan.Design and simulation of an ultrasonic linear motor with dual piezoelectric actuators［J］.Microsystem Technologies, 2020, 26(1):71-78.

[12] ZHANG Liwei, ZHENG Huiming, HUANG Shouqing, et al. A life test of ultrasonic motors under different torque loads and the analysis of the characteristics of wearing surfaces［J］.Proceedings of the Institution of Mechanical Engineers, Partj:Journal of Engineering Tribology, 2020, 234(5):770-777.

[13] ZHENG Wei, ZHOU Jingliang, RUAN Yuzhen.Effects of ultrasonic motor stator teeth height on start reliability［J］.Energy Harvesting and Systems, 2015, 2(3/4):153-156.