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| 纳米黏弹性测量中谐振抑制方法研究 | |
| 引用本文： | 杜义浩,谢平,张磊,邹清泽. 纳米黏弹性测量中谐振抑制方法研究[J]. 计量学报, 2015, 36(5): 473-476. DOI: 10.3969/j.issn.1000-1158.2015.05.06 |
| 作者姓名： | 杜义浩 谢平 张磊 邹清泽 |
| 作者单位： | 1. 燕山大学电气工程学院, 河北 秦皇岛 066004; 2. 美国新泽西州立大学机械与航空工程系, New Brunswick, NJ 08854 |
| 基金项目： | 国家自然科学基金(61271142); 河北省高等学校自然科学研究重点项目(ZD20131080); 河北省高等学校自然科学研究青年基金(QN2014074) |
| 摘 要： | 针对压痕测量软材料中悬臂梁谐振导致测量数据存在较大误差的问题,提出一种在宽带纳米黏弹性测量中抑制悬臂梁谐振的方法。基于z轴动态特性设计一种陷波器类型的前置滤波器,并对输入驱动电压进行滤波;设计基于最小均方误差准则(LMS)的自适应滤波器,参考赫兹接触模型对软材料的复蠕变量进行滤波,进而在输入环节和测量环节消除谐振影响。通过二甲基硅氧烷(PDMS)样本的黏弹性测量实验,验证悬臂梁谐振抑制方法的有效性。 |
| 关 键 词： | 计量学 黏弹性测量 谐振抑制 前置滤波器 自适应滤波器 |
Resonance Suppression on Nanoscale Viscoelasticity Measurement |
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| DU Yi-hao,XIE Ping,ZHANG Lei,ZOU Qing-ze. Resonance Suppression on Nanoscale Viscoelasticity Measurement[J]. Acta Metrologica Sinica, 2015, 36(5): 473-476. DOI: 10.3969/j.issn.1000-1158.2015.05.06 | |
| Authors: | DU Yi-hao XIE Ping ZHANG Lei ZOU Qing-ze |
| Affiliation: | 1. School of Electrical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China; 2. Department of Mechanical and Aerospace Engineering, the State University of New Jersey, New Brunswick, NJ 08854, USA |
| Abstract: | Aiming at the cantilever resonance leads to large measurement data errors in indentation measuring soft material, a method to suppress the cantilever resonance on the broadband viscoelasticity measurement is proposed. A notch filter type prefilter based on z-axis dynamics is designed, and used to filter the input drive voltage; An adaptive filter based on the least mean square (LMS) is designed, and referring to the Hertz contact model to filter the complex compliance of soft materials, furtherly eliminate the residual cantilever resonance effects in input link and output link. The validity of the cantilever resonance suppression method is verified by implementing the polydimethylsiloxane (PDMS) sample viscoelasticity measurement. |
| Keywords: | metrology viscoelasticity measurement resonance suppression prefilter adaptive filter |
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