Numerical analysis of the hybrid transducer ultrasonic motor: Comparison of characteristics calculated by transmission-line and lumped-element models

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Abstract

In this paper, a hybrid transducer ultrasonic motor is numerically analyzed by using two equivalent electrical circuit models. A transmission-line model for the torsional vibration in the stator, which can model any torsional vibration mode and their combinations, was introduced and compared with a lumped-element model, which modeled the fundamental torsional resonance mode in the stator. The calculation result by using the transmission-line model demonstrated that the second harmonic torsional vibration increased either with the static spring force by which the rotor was pressed to the stator or with the load torque placed on the rotor. The difference in the calculated motor performance between the two models appeared when the second harmonic torsional vibration became large at a sufficient static spring force. © 2002 Elsevier Science B.V. All rights reserved.

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Satonobu, J., Friend, J. R., Nakamura, K., & Ueha, S. (2002). Numerical analysis of the hybrid transducer ultrasonic motor: Comparison of characteristics calculated by transmission-line and lumped-element models. Ultrasonics, 39(8), 559–565. https://doi.org/10.1016/S0041-624X(02)00260-3

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