Purpose

The purpose of this study is to investigate the influence mechanism of different interface component surface textures on the ultrasonic motor (USM) output performance.

Design/methodology/approach

The energy transmission mechanism of the traveling-wave ultrasonic motor 60 (TRUM-60) was numerically and experimentally investigated by fabricating dimple textures with different feature types on the friction material and the stator.

Findings

Textured friction material can increase the contact range effectively, and thus, can improve the friction characteristics of the interface and the output performance of the TRUM-60. The experimental results verified the expected influence mechanism and demonstrated that the use of either a textured friction material or stator has a very different effect on USM output performance. A textured PI-based friction material improved the TRUM-60 output performance, resulting in a maximum energy conversion efficiency of 57.11%. However, a textured stator degraded the TRUM-60 output performance, resulting in a minimum energy conversion efficiency of only 44.92%.

Originality/value

The results of this study provide a theoretical foundation for improved USM designs with textured interfaces.

中文翻译：

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表面纹理对超声电机输出性能的影响机制

目的

本研究的目的是研究不同界面组件表面纹理对超声电机（USM）输出性能的影响机制。

设计/方法/方法

通过在摩擦材料和定子上制造具有不同特征类型的凹坑纹理，对行波超声电机60（TRUM-60）的能量传输机制进行了数值和实验研究。

发现

带纹理的摩擦材料可以有效增加接触范围，从而改善界面的摩擦特性和TRUM-60的输出性能。实验结果验证了预期的影响机制，并证明使用纹理摩擦材料或定子对 USM 输出性能有非常不同的影响。带纹理的基于 PI 的摩擦材料提高了 TRUM-60 的输出性能，最大能量转换效率为 57.11%。然而，纹理定子降低了 TRUM-60 的输出性能，导致最低能量转换效率仅为 44.92%。

原创性/价值

这项研究的结果为改进具有纹理界面的 USM 设计提供了理论基础。