Miniature Ultrasonic Linear Motor Capable of Applying Opposing Preload

Konferenz: ACTUATOR 2018 - 16th International Conference on New Actuators
25.06.2018 - 27.06.2018 in Bremen, Deutschland

Tagungsband: ACTUATOR 2018

Seiten: 4Sprache: EnglischTyp: PDF

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Tanoue, Y.; Morita, T. (The University of Tokyo, Kashiwa, Japan)

In recent years, ultrasonic motors have been expected to be applied for driving robot hands and walking assist robots because of their low-speed and high-torque characteristics. However, the sufficient output has not been yet obtained for these applications. Therefore, a high-power actuator with miniaturized structure is strongly required. In this research, we propose an ultrasonic linear motor that has a concave-shaped stator and it can be preloaded from opposing direction. It utilizes the L1 mode in the driving direction and the B1-2 mode in the preload direction. The stator was designed with FEM analysis and the driving characteristics were examined.