Research on the Three-Dimensional Elliptical Motion of Rotary Traveling Wave Ultrasonic Motor
The model of a particle on the stator tooth side of traveling wave type rotary ultrasonic motor is established based on the plate theory, which shows that trajectories of particles on the surface of the stator teeth are essentially three-dimensional Oblique elliptical motion. Take the RTUM60 type ultrasonic motor as an example, the three-dimensional elliptical motion of stator tooth’s endpoint is studied through numerical experiments, and the results show the energy loss caused by the radial sliding between stator and rotor is considerable. The influences of tooth height on effective elliptical motion, the velocity in the three direction under Cylindrical coordinate system and radial slip are also discussed, which conclude that the model can be used for further study on the contact model design and optimization traveling wave type ultrasonic motor.
Zhengyi Jiang and Chunliang Zhang
Y. P. Wang et al., "Research on the Three-Dimensional Elliptical Motion of Rotary Traveling Wave Ultrasonic Motor", Advanced Materials Research, Vols. 97-101, pp. 3519-3522, 2010