[1] [1] ZHAO CH SH．Theory and Applications of Ultrasonic Motors ［M］.Beijing: Science press, 2007: 226.(in Chinese)

[2] [2] ZHAO CH SH．Recent progress in ultrasonic motor techniques ［J］.Journal of Vibration, Measurement & Diagnosis, 2004, 24(1): 1-5.(in Chinese)

[3] [3] WANG J P, JIN J M, ZHAO CH SH. Asynchronous bundling of liner ultrasonic motor for precision positioning stage ［J］. Opt. Precision Eng., 20111, 19(11): 2693-2702.(in Chinese)

[4] [4] TOKIYA W, MINORU K K, TOSHIRO H T. For an ultrasonic linear motor with flexible driving part ［J］. IEEE Ultrasonic Symposium, 1998.

[5] [5] UROSAWA M K, KODAIRA O, TSUCHITOI Y, et al..Transducer for high speed and large thrust ultrasonic linear motor using Two sandwich-type vibrators ［J］.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1998, 45(5): 1188-1195.

[6] [6] YUN C H, ISHII T, NAKAMURA K, et al.. A high power ultrasonic linear motor using a longitudinal and bending hybrid bolt-clamped langevin type transducer ［J］．Japanese Journal of Applied Physics, 2001, 40(5B): 3773-3776.(in Japanese)

[7] [7] YANG D, YAO ZH Y．Research on V-shape linear ultrasonic motor based on amplitude amplifier pole ［J］．Piezoelectrics&Aeoustooptics, 2009, 31(5): 685-687.(in Chinese)

[8] [8] YAO ZH Y, YANG D, ZHAO CH SH．Structure design and power flow analysis of bar-structure linear ultrasonic motors ［J］.Proceedings of the CSEE, 2009, 29(24): 56-60.(in Chinese)

[9] [9] HU N, YAO ZH Y, ZHAO W T. Design of clamping components for a liner ultrasonic motor ［J］. China Mechanical Engineering, 2012, 23(9): 1089-1091.(in Chinese)

[10] [10] CHAO H P. Test system design of the linear ultrasonic motor based on virtual instrument ［D］. Nanjing: Nanjing University of Aeronautics and Astronautics, 2013.(in Chinese)

[11] [11] SHUN Y M, ZENG P, CHENG G M, et al.. Driving power supply for two-degree-of-freedom ultrasonic motor with single vibrator ［J］. Opt. Precision Eng., 2013, 21(9): 2279-2286.(in Chinese)

[12] [12] WANG SH Y, LENG X F, HE F Y, et al.. Rotary varifocal mechanism driven by ultrasonic motor ［J］. Opt. Precision Eng., 2009, 17(11): 2814-2819. (in Chinese)

[13] [13] YU H, CHEN Q, HUANG W. Linear ultrasonic motor clamped by flexible hinge ［J］. Micromotors, 2011, 44(3): 1-4.

[14] [14] YAMAGUCHI D, KANDA T, SUZMORI K. A design of bolt-clamped langevin-type transducer for cryo ultrasonic motor ［C］.The 4th International Conference on Manufacturing, Machine Design and Tribology, 2011(4): D1-10.

[15] [15] HUIMIN Y, YIN W, QIANWEI C, et al.. A linear ultrasonic motor clamped with three-roller clamping scheme ［J］. Mechanical Science and Technology for Aerospace Engineering, 2012(2): 17.

[16] [16] WANG Y F, GUO Y X, MAO J Q. Rate-dependent modeling and tracking control of piezoelectric actuators ［J］. Opt. Precision Eng., 2014, 22(3): 616-625. (in Chinese)