A high power ultrasonic linear motor using push-pull longitudinal and bending multimode transducer

作者：Shi Sheng Jun^*; Chen Wei Shan; Liu Jun Kao; Xie Tao

来源：Proceedings of the CSEE, 2010, 30(9): 55-61.

• Coupling effect
• Coupling element
• Elliptical locus
• Equivalent circuit model
• Finite element method (FEM)
• Finite element method simulation
• High-power ultrasonics
• Horn theory
• Impedance characteristics
• Langevin transducers
• Linear ultrasonic motor
• Main structure
• Maximum speed
• Multimodes
• Resonant frequencies
• Sensitive parameter
• Structure parameter
• Thrust forces
• Transfer matrix analysis
• Ultrasonic motors

A linear ultrasonic motor using longitudinal and bending (L-B) hybrid Langevin transducer was proposed. The main structure consists of two exponential horns intersecting at driving foot. L-B vibrations are superimposed and elliptical locus is generated at driving foot. Sensitivity analysis of structure parameters to the L-B resonant frequencies were performed using finite difference method based on the classical horn theory and flexural horn transfer matrix analysis method, and frequencies were degenerated to 27.476 kHz by choosing the most sensitive parameter. Finite element method (FEM) simulation and impedance characteristic test agreed well with the calculated results. The coupling effect between L-B vibrations was studied and its equivalent circuit model with coupling elements was proposed and testified by one phase driving experiment. The maximum speed and thrust force were 1280 mm/s and 45 N.

• 出版日期2010