A Noise-Immune Kalman Filter and Modelling forPedestrian Traffic Loads

A Noise-Immune Kalman Filter and Modelling forPedestrian Traffic Loads
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抗噪声卡尔曼滤波器和行人交通负荷建模

DOI:
10.1155/2020/8848910
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发表时间:
2020-11
影响因子:
1.6
通讯作者:
Ye Zhu
Ye Zhu
中科院分区:
工程技术4区
文献类型:
--
作者:
Yanan Gao;Ningbo Peng;Jitao Tang;Yun Dong;Weidong Zhang;Peng Zhang;Jiarui Chen;Ye Zhu

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如何确定这些细长结构在人群激励下的设计荷载是研究人激振动的一个重要问题。为掌握步行人群载荷的特点,对36名健康成年人的地面反力和地面反力矩进行了研究。首先,采用一个振荡系统建模步行腿,建立控制方程,并将其转化为离散状态空间。然后应用卡尔曼滤波方法对实测地面反力进行噪声滤波,可以很好地去除隐藏在实测信号中的噪声。此外,采用傅里叶级数对地基反力和地基反力矩进行建模,得到了前六个相应系数,并进行了分析。本工作全面探讨了步行行人脚的激振力和力矩。研究结果可为行人天桥、看台、车站等细长结构在人群激励下的荷载设计提供参考。
The definition of design load with walking crowd excitation on these slender structures is a significant problem to human-induced vibration. To capture the characteristics of walking crowd loads, this article researches both the ground reaction force and ground reaction moment for 36 healthy adults. Firstly, a oscillate system modeling walking leg is used to build a governing equation, which further transformed into the discrete state space. Then the Kalman method is applied to filter the noises for the measured ground reaction force, which can well remove the noises hiding in the measured signals. In addition, the Fourier series are used to model the ground reaction force and ground reaction moment, and the first six corresponding coefficients are obtained and analyzed. This work comprehensively explores the excitation force and moment from walking pedestrian feet. The result of this study provides the reference of load design for these slender structures such as footbridges, grandstands, or stations under crowd excitation.
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