基于基里加米的微电子机械系统移动波超声波电机的模式优化
Rong Li1, Longqi Ran2, Cong Wang1
1School of Mechanical Engineering, Xihua University, Chengdu 610039, China.
Micromachines
|March 6, 2025
概括
基于Kirigami的模式优化显著降低了超声波电机中的移动波扭曲. 这种方法抑制了模态分割和形状扭曲,提高了定位器性能,提高了稳定性和效率.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 声学 声学 在声学方面
背景情况:
- 定位器中高质量的移动波对于移动波超声波电机 (TUSM) 的稳定性和效率至关重要.
- 稳压器中的异型弹性会导致模态分裂和形状扭曲,从而导致显著的移动波扭曲.
- 现有的方法很难有效地缓解这些问题,阻碍了TUSM的表现.
研究的目的:
- 提出和研究一种使用kirigami模式的新模式优化方法,以抑制TUSM定位器中的模态分裂和形状扭曲.
- 分析基于kirigami的优化对移动波特征的影响,特别关注具有偶数和奇数节点直径的直角模式.
- 为了证明拟议方法在提高移动波质量以提高TUSM操作方面的有效性.
主要方法:
- 基里加米图案被设计在状态器的内部边界使用线性插值.
- 为偶数和奇数节点直径的直角模式建立了一个优化模型.
- 为了优化,使用了一个扩展的Nelder-Mead简单算法,具有无导数和绑定约束,用于优化.
主要成果:
- 优化显著改善了具有奇点直径的直角模式的模式形状,使它们更接近正弦波 (例如,B13模式扭曲减少到0.003).
- 在优化后成功维持了内在频率匹配.
- 对于带有偶节点直径的直角模式,频率分割 (例如,B14模式从380 Hz减少到1 Hz) 和形状扭曲 (低至0.004) 都被大大抑制.
结论:
- 基于Kirigami的模式优化是一种有效的策略,可以抑制TUSM定位器中的模式分割和形状扭曲.
- 拟议的方法通过改善模式形状和减少频率分割来提高移动波质量,从而提高了TUSM的稳定性和效率.
- 这种方法为开发高性能移动波超声波电机提供了有希望的解决方案.
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