Previous studies have shown that the seated human is most sensitive to wholebodyudvertical vibration at about 5 Hz. Similarly, the body shows an apparentudmass resonance at about 5 Hz. Considering these similarities between theudbiomechanical and subjective responses, it was hypothesised that, at lowudfrequencies, subjective ratings of whole-body vibration might be directlyudproportional to the driving force.udTwelve male subjects participated in a laboratory experiment where subjects satudon a rigid seat mounted on a shaker. The magnitude of a test stimulus wasudadjusted such that the subjective intensity could be matched to a referenceudstimulus, using a modified Bruceton test protocol. The sinusoidal referenceudstimulus was 8 Hz vibration with a magnitude of 0.5 m/s² r.m.s. (or 0.25 m/s²udr.m.s. for the 1 Hz test); the sinusoidal test stimuli had frequencies of 1, 2, 4, 16udand 32 Hz.udEqual sensation contours in terms of seat acceleration showed data similar toudthose in the literature. Equal sensation contours in terms of force showed audnominally linear response at 1, 2 and 4 Hz but an increasing sensitivity at higherudfrequencies. This is in agreement with a model derived from published subjectiveudand objective fitted data.
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机译：先前的研究表明，就座的人对大约5 Hz的全身垂直振动最为敏感。同样，人体在约5 Hz处表现出明显的共振。考虑到 u机械力学和主观反应之间的这些相似性，假设在 r 低频时，全身振动的主观评价可能与驱动力直接不成比例。 ud12位男性受试者参加了一个实验，坐在 udon安装在振动筛上的刚性座椅。使用修改的Bruceton测试规程，对测试刺激的幅度进行了调整，以使主观强度可以与参考刺激相匹配。正弦参考激励是8 Hz振动，幅度为0.5 m /s²r.m.s。 （或1 Hz测试为0.25 m /s² udr.m.s。）；正弦波测试刺激的频率分别为1、2、4、16 ud和32 Hz。 ud就座椅加速度而言，相等的感觉轮廓显示的数据与文献中的 udose相似。以力表示的等高轮廓在1、2和4 Hz时显示出标称线性响应，而在较高的频率下则显示出越来越高的灵敏度。这与从公开的主观客观的拟合数据得出的模型一致。
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