面向多因素的振动舒适度限值相关性研究

Coefficient analysis between vibration serviceability limits and relevant multi‑factors

  • 摘要: 本文基于群智感知搜集的真实环境中的振动舒适度大规模数据集,利用最大信息系数分析限值与影响因素的相关性,找到关键因素(振动峰值比、人身体质量指数、年龄和楼层);给出振动限值与关键因素参量的拟合关系;通过正态分布验证振动限值真实值与拟合值残差呈正态分布,给出相应的95%置信区间。并提出一种关键因素值已知时基于概率的振动舒适度预测模型。

     

    Abstract: Vibration limit is one of the most essential contents in vibration serviceability research. Former studies showed that many factors, such as biological and environmental factors, significantly affected vibration limits deeply. As a reason of defects in traditional research, such as small scale data and unreal test environment, quantitative relationships between vibration limits and these factors stayed unknown. Based on data collected by crowd sensing in real environment, crest factor of vibration/ BMI/ human age/ floor of building were found key factors by using maximal information coefficient (MIC) in coefficient analysis. Functional relationship and 95% confidence intervals between vibration limits and key factors were proposed, respectively. Lilliefors test and normal probability plot show that residuals between fitted values of limits and measured ones follow a normal distribution. A novel approach of estimating vibration serviceability based on probability is proposed when key factors and vibration magnitude are known.

     

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