Abstract:The dynamic analysis on the stator of a travelling wave type rotary ultrasonic motor in centrifugal field was carried out, and the effect of centrifugal stiffening on the stator was analyzed.The additional stiffness matrix caused by the effect of centrifugal stiffening was deduced by calculating the work done by the centrifugal force (or called centrifugal potential energy), and the characteristic matrices (including mass matrix and stiffness matrix) of the stator in centrifugal field as well as the modal parameters of the stator were obtained.Based on the voltage signal fed back from the soliton region of piezoelectric ceramics, the natural frequency of the stator in high rotation environment was determined.Finally, the dynamic characteristics of the stator in centrifugal field were summarized, and the driving strategy of the ultrasonic motor in the high rotation environment was proposed, which lays the foundation for the application of the ultrasonic motor in high rotation environment.
陈海鹏,陈超,王均山. 强离心场下旋转型行波超声电机定子动力学分析与试验[J]. 振动与冲击, 2020, 39(2): 47-50.
CHEN Haipeng,CHEN Chao,WANG Junshan. Dynamic analysis and experiment study on the stator of a travelling wave type-rotary ultrasonic motor in centrifugal field. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(2): 47-50.
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