验证和优化两个模型的磁力恢复力量使用多稳定的压电能量收割机
Haining Li1, Kefu Liu1, Jian Deng2
1Department of Mechanical Engineering, Lakehead University, Thunder Bay, ON, Canada.
Journal of intelligent material systems and structures
|July 31, 2023
概括
本研究介绍了一种可调节的多稳定压电能收割机,可调节稳定状态. 它验证和优化磁力模型,通过精确的参数调节提高能量收集性能.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
背景情况:
- 压电式能源收获器 (PEH) 对于供电小型电子设备至关重要.
- 在PEH中实现多稳定性可以提高不同频率的能量采集效率.
- 精确的磁力建模对于设计有效的多稳定PEH是必不可少的.
研究的目的:
- 介绍一个可调节的多稳定的压电能量收割机,可调节稳定状态 (单稳定,双稳定和三稳定).
- 为了验证和比较两个磁恢复力模型的准确性:等效磁点二极管和2点二极管方法.
- 为了优化这些模型,使用多种群遗传算法来提高性能.
主要方法:
- 开发一个可调节的压电能量收割机,带有磁合的悬臂梁.
- 动态确定恢复力和与分析模型进行比较.
- 应用多种群遗传算法用于模型优化.
- 研究参数灵敏度和稳定状态区域的生成.
主要成果:
- 可调节的收割机成功展示了单稳定,双稳定和三稳定配置.
- 对比显示了点二极管和2点二极管模型在各种调参数之间的精度差异.
- 经过优化后的模型在预测磁修复力方面显示出更高的准确性.
- 参数灵敏度分析确定了影响稳定状态的关键参数.
结论:
- 开发的可调节收获机提供了一个多功能平台,用于多稳定的能量收获.
- 优化的磁力模型显著提高了多稳定系统的预测准确度.
- 该研究为设计具有定制稳定性特征的先进PEH提供了基础.
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