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首页> 外文期刊>Journal of Biomechanics >Frequency weighting derived from power absorption of fingers-hand-arm system under z(h)-axis vibration.
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Frequency weighting derived from power absorption of fingers-hand-arm system under z(h)-axis vibration.

机译：手指-手臂系统在z（h）轴振动下的功率吸收所产生的频率加权。

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摘要

The objectives of this study are to derive the frequency weighting from three vibration power absorption (VPA) methods (finger VPA, palm VPA, and total or hand VPA), and to explore whether these energy methods are better than the currently accepted acceleration method. To calculate the VPA weightings, the mechanical impedance of eight subjects exposed to a broadband random vibration spectrum in the z(h)-axis using 18 combinations of hand couplings and applied forces was measured. The VPA weightings were compared with the frequency weighting specified in ISO 5349-1 [2001. Mechanical Vibration--Measurement and Evaluation of Human Exposure to Hand--Transmitted Vibration--Part 1: General Requirements. International Organization for Standardization, Geneva, Switzerland]. This study found that the hand and palm VPA weightings are very similar to the ISO weighting but the finger VPA weighting for the combined grip and push action is much higher than the ISO weighting at frequencies higher than 25 Hz. Therefore, this study predicted that the total power absorption of the entire hand-arm system is likely to be correlated with psychophysical response or subjective sensation. However, if the ISO weighting method cannot yield good predictions of the vibration-induced disorders in the fingers and hand, the hand and palm energy methods are unlikely to yield significantly better predictions. The finger VPA is a vibration measure between unweighted and ISO weighted accelerations. The palm VPA method may have some value for studying the disorders in the wrist-arm system.
机译：这项研究的目的是从三种振动吸收功率（VPA）方法（手指VPA，手掌VPA和总VPA或手部VPA）得出频率加权，并探讨这些能量方法是否优于当前公认的加速方法。为了计算VPA权重，使用手耦合和外加力的18种组合测量了八名受试者在z（h）轴上暴露于宽带随机振动谱的机械阻抗。将VPA权重与ISO 5349-1 [2001年]中指定的频率权重进行了比较。机械振动。人体暴露于手传播的振动的测量和评估。第1部分：一般要求。国际标准化组织，瑞士日内瓦]。这项研究发现，手和手掌VPA的权重与ISO的权重非常相似，但在高于25 Hz的频率下，手指抓握和推动动作的VPA权重远高于ISO的权重。因此，这项研究预测整个手臂系统的总能量吸收可能与心理生理反应或主观感觉有关。但是，如果ISO加权方法无法对手指和手部的振动引起的疾病做出良好的预测，则手部和手掌能量测量方法不太可能产生明显更好的预测。手指VPA是未加权​​加速度和ISO加权加速度之间的振动度量。手掌VPA方法对于研究腕臂系统的疾病可能具有一定的价值。

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