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Difference thresholds for the perception of whole-body vertical vibration: dependence on the frequency and magnitude of vibration

机译：全身垂直振动感知的不同阈值：取决于振动的频率和幅度

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摘要

When seeking to reduce vibration in transport it is useful to know how much reduction is needed for the improvement to be noticeable. This experimental study investigated whether relative difference thresholds for the perception of whole-body vertical vibration by seated persons depend on the frequency or magnitude of vibration. Relative difference thresholds for sinusoidal seat vibration were determined for 12 males at three vibration magnitudes and eight frequencies (2.5, 5, 10, 20, 40, 80, 160, 315 Hz) using the three-down-one-up method in conjunction with a two-interval-forced-choice procedure. The median relative difference thresholds were in the range 9.5% to 20.3%. There appeared to be a frequency-dependence at the lowest vibration magnitude, such that higher frequencies had higher difference thresholds. The relative difference thresholds depended on the vibration magnitude only at 2.5 and 315 Hz. The influence of both vibration frequency and vibration magnitude on the measured difference thresholds suggests that vision (at 2.5 Hz) and hearing (at 315 Hz) contributed to the perception of changes in vibration magnitude.
机译：当寻求减少运输中的振动时，了解需要多少减少才能使改进显着有用。这项实验研究调查了就座者感知全身垂直振动的相对差异阈值是否取决于振动的频率或幅度。使用三下合一方法结合三个振动幅度和八个频率（2.5、5、10、20、40、80、160、315 Hz）为12位男性确定正弦座椅振动的相对差异阈值两个时间间隔的强制选择过程。中位数相对差异阈值在9.5％至20.3％的范围内。在最低的振动幅度下似乎存在频率依赖性，因此较高的频率具有较高的差异阈值。相对差阈值仅取决于2.5和315 Hz时的振动幅度。振动频率和振动幅度对测得的差异阈值的影响表明，视觉（2.5 Hz）和听力（315 Hz）有助于感知振动幅度的变化。

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  • 来源
    《Ergonomics》 |2009年第10期|1305-1310|共6页
  • 作者

    Nazim Gizem Forta; Miyuki Morioka; Michael J. Griffin;

  • 作者单位

    Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Southampton, SO17 1BJ, UK;

    Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Southampton, SO17 1BJ, UK;

    Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Southampton, SO17 1BJ, UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    difference thresholds; whole-body vibration;

    机译：差异阈值;全身振动;

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