恶作剧:基于奇异值的实验动力学多响应数据集噪声滤波

IF 1.9 4区 工程技术 Q3 ENGINEERING, MECHANICAL
F. Trainotti, S. W. B. Klaassen, T. Bregar, D. J. Rixen
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引用次数: 0

摘要

高质量的测量对于结构动力学实验技术的成功应用至关重要。噪声和干扰的存在会严重扭曲存储在数据中的信息,如果处理不当,可能会导致错误的发现和误导性的预测。过滤噪声的一种常用技术依赖于将数据集分解成按重要程度排序的奇异分量。丢弃低价值的贡献有助于清理数据并消除虚假。该文提出了一种基于奇异值的多响应振动数据重构方法。恶作剧集成了主响应函数和汉克尔滤波动作的效果,从而改进了系统极点和零点的数据重建。通过分析和数值算例验证了该方法的鲁棒性、有效性和通用性。恶作剧操作与时间和频率为基础的数据。应用于有噪声的全视野相机测量,该滤波器表现优异,表明其在各种识别任务和振动分析中的应用潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
PRANK: A Singular Value Based Noise Filtering of Multiple Response Datasets for Experimental Dynamics

High quality measurements are paramount to a successful application of experimental techniques in structural dynamics. The presence of noise and disturbances can significantly distort the information stored in the data and, if not adequately treated, may result in erroneous findings and misleading predictions. A common technique to filter out noise relies on decomposing the dataset into singular components sorted by their degree of significance. Discarding low-value contributions helps to clean the data and remove spuriousness. This paper presents PRANK, a novel singular value-based reconstruction approach for multiple-response vibration datasets. PRANK integrates the effect of Principal Response Functions and Hankel filtering actions, resulting in an improved data reconstruction for both system poles and zeros. The proposed formulation is tested on both analytical and numerical examples, showcasing its robustness, efficiency and versatility. PRANK operates with both time- and frequency-based data. Applied to noisy full-field camera measurements, the filter delivered excellent performance, indicating its potential for various identification tasks and applications in vibration analysis.

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来源期刊
Experimental Techniques
Experimental Techniques 工程技术-材料科学:表征与测试
CiteScore
3.50
自引率
6.20%
发文量
88
审稿时长
5.2 months
期刊介绍: Experimental Techniques is a bimonthly interdisciplinary publication of the Society for Experimental Mechanics focusing on the development, application and tutorial of experimental mechanics techniques. The purpose for Experimental Techniques is to promote pedagogical, technical and practical advancements in experimental mechanics while supporting the Society''s mission and commitment to interdisciplinary application, research and development, education, and active promotion of experimental methods to: - Increase the knowledge of physical phenomena - Further the understanding of the behavior of materials, structures, and systems - Provide the necessary physical observations necessary to improve and assess new analytical and computational approaches.
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