| 李东发,杨威,汤沛源,李磊.基于模态局部化的谐振式双通道质量检测方法[J].电子测量与仪器学报,2025,39(11):56-63 |
| 基于模态局部化的谐振式双通道质量检测方法 |
| Resonant dual-channel mass detection method based on mode localization |
| |
| DOI： |
| 中文关键词: 多质量检测 模态局部化 压电驱动 交叉灵敏度 模态振型 |
| 英文关键词:multi-mass inspection mode localization piezoelectric actuation cross-sensitivity mode shape |
| 基金项目: |
|
|
| Author | Institution |
| Li Dongfa | College of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China |
| Yang Wei | College of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China |
| Tang Peiyuan | College of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China |
| Li Lei | College of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, China |
|
| 摘要点击次数: 348 |
| 全文下载次数: 328 |
| 中文摘要: |
| 交叉灵敏度会导致多通道质量传感器的检测性能下降，限制了其在实际生产中的应用。为消除交叉灵敏度影响，基于模态局部化原理设计了一种山字形对称分布的谐振梁结构，利用不同模态振型提出了一种双通道质量的独立谐振检测方法。首先，对谐振梁结构进行设计并建立了动力学方程，随后利用COMSOL有限元软件仿真确定结构的具体尺寸以及模态振型；其次，通过实验验证在不同谐振梁上增加吸附质量对前三阶频率以及振幅的影响；然后，采用前三阶模态的振幅比作为输出信号实现了单质量谐振检测，并利用第2阶和第3阶模态振动进一步提出了双质量谐振检测方法。实验结果表明，在前三阶频率下分别可实现0~16、0~4、0~3 mg的质量检测范围，并且检测灵敏度随着模态阶数的升高而增大。利用2、3阶频率组合检测能够消除交叉灵敏度对双通道质量检测的不利影响，提高检测方法的可靠性，为后续质量传感器的设计与优化提供了坚实的理论基础。 |
| 英文摘要: |
| Cross-sensitivity inevitably degrades the detection performance of multi-channel mass sensors and thus restricts their practical deployment in industrial environments. To suppress this parasitic effect, we herein propose a symmetric “mountain shaped” resonant beam architecture founded on the principle of mode localization. Firstly, the resonant beam structure is theoretically analyzed and the dynamic equation is established. Then, the specific dimensions and the first three mode shapes are determined by COMSOL finite element software simulation. Secondly, the influence of adding adsorption mass on different resonant beams on the first three frequencies and amplitudes is verified by experiments. Then, the amplitude ratio is used as the output signal to achieve single-mass detection of the first three modes. On this basis, a dual-mass detection scheme is further designed and experimentally verified. The results show that the mass detection range of 0~16, 0~4, and 0~3 mg can be achieved at the first three frequencies, respectively. By exploiting the disparate modal shapes of the second and third eigenmodes, a decoupled resonant sensing paradigm for dual-channel mass determination is established. The synergistic exploitation of the second- and third-order eigenfrequency pairs effectively nullifies the deleterious influence of cross-sensitivity on dual-channel measurements, thereby enhancing the robustness and reliability of the proposed methodology. These findings furnish a rigorous theoretical basis for the subsequent design and optimization of high-performance mass sensors. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
