基于机器学习的元结构设计,用于MEMS电热执行器的无传感器线性化
Lingzhi Zhang1, Hossein Mofatteh2, Jonathan Kong3
1Department of Mechanical Engineering, McGill University, Montreal, QC, H3A 0C3, Canada.
Microsystems & nanoengineering
|November 12, 2025
概括
本研究引入了机器学习优化的机械元结构,以线性化热微执行器,提高无传感器的精度. 这种数据驱动的设计提高了微型执行器的性能,用于材料测试等应用.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 机器学习 机器学习
背景情况:
- 执行器非线性在小型化系统中是一个挑战,通常需要复杂的反机制.
- 传统的方法来解决热微执行器中的非线性问题,对于小规模的应用通常是不切实际的.
研究的目的:
- 开发一种新的方法来实现热微型执行器的线性运动.
- 整合机器学习辅助的优化机械元结构,以改善执行器线性.
- 消除了微型执行器系统中对传感器或电子控制器的需求.
主要方法:
- 使用有限元模拟生成一个大数据集用于训练神经网络模型.
- 使用神经网络进行反向设计,以优化机械元结构的几何参数.
- 使用Piezo-Multi-User MEMS工艺 (PiezoMUMP) 集成的热执行器制造的优化元结构.
主要成果:
- 通过转换输入电压和位移之间的固有非线性关系,实现了近线性响应.
- 实验性表征证实,与原始执行器相比,线性度大约有85%的改善.
- 证明了精确的位移控制,用于诸如2D材料的抗拉性测试等应用.
结论:
- 拟议的方法提供了一个可扩展和计算高效的解决方案,以提高微型执行器的性能.
- 机械设计的数据驱动方法可以将其推广到其他执行系统.
- 这种方法通过优化的元结构为智能机械设计铺平了道路.
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