压电堆执行器的灵敏度
Xishan Jiang1, Jing Zheng1, Ning Wang1
1Department of Instrument Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Sensors (Basel, Switzerland)
|December 9, 2023
概括
这项研究分析了压电执行器的灵敏度,揭示了非线性动力学可以作为两个子系统进行建模. 当输入电压频率与机械子系统相匹配时,就能达到最大的灵敏度.
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:
- 压电驱动器表现出非线性歇斯底里,使其动态分析复杂化.
- 了解执行器灵敏度对于精确的控制和应用设计至关重要.
研究的目的:
- 为了研究一个与质量相连的压电堆执行器的灵敏度.
- 分析非线性动力学,并为压电执行器开发分析模型.
主要方法:
- 将灵敏度定义为来自单频电压输入的力频谱输出.
- 模拟非线性动力学作为非线性歇斯底里和线性机械子系统的级联.
- 推导非线性微分方程的分析解决方案.
主要成果:
- 非线性转换将单频输入映射到多频输出 (驱动频率和奇偶波).
- 稳定状态的灵敏度取决于机械子系统对力频谱的反应.
- 最大灵敏度发生在机械子系统的自然频率附近.
结论:
- 拟议的分析模型准确地描述了压电执行器非线性动力学.
- 该模型是通过数值模拟和实验数据验证的.
- 该框架有助于分析和设计各种压电驱动器配置.
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