Structural design of inertial linear ultrasonic motor using bending modal
ZHANG Yang-yang, YAO Zhi-yuan, ZHANG Ya-fei
State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and Astronautics), Nanjing 210016, Jiangsu Province China
Abstract：The inertial linear ultrasonic motors have the disadvantages such as small output force and unstable structure. However, the output force and structural stability of the motor can be improved by modifying the vibration mode of the structure. First, a new structural design of inertial linear ultrasonic motor is proposed. The motor adopts a rectangular plate structure, which utilizes the bending vibration. Then the working principle is illustrated and the vibration simulation of the stator is analyzed by using the ANSYS workbench software. Finally, the inertial linear ultrasonic motor is designed and manufactured. Tests of the prototype indicate that the motor has a wide working frequency and stable running. When the working frequency is 23.6 kHz, the maximum speed of the motor is 197 mm/s, while when the working frequency is 23.2 kHz, the maximum thrust is 7.3 N. Experiments show that the driving direction of the proposed inertial linear ultrasonic motor has an abrupt change at a particular frequency point.
张阳阳，姚志远，张亚飞. 利用弯曲模态的惯性直线超声电机结构设计[J]. 振动与冲击, 2017, 36(13): 41-44.
ZHANG Yang-yang, YAO Zhi-yuan, ZHANG Ya-fei. Structural design of inertial linear ultrasonic motor using bending modal. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(13): 41-44.
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