Hempstock T I, O'Connor D E
Scand J Work Environ Health. 1986 Aug;12(4 Spec No):355-8. doi: 10.5271/sjweh.2129.
In an assessment of the accuracy with which impedance can be determined in the hand-arm system, two subjects were each tested six times at 28 frequencies between 10 and 800 Hz. In addition the effect of wearing an air cushion glove was investigated, and an attempt was made to develop a simple model of the glove. The results showed agreement with other recently published data for impedance in the hand-arm system at frequencies above about 25 Hz but not below. The mean values of the impedance for a single subject had standard errors of about 10%. When the subjects wore an air cushion glove, there was only a small change in impedance, and consequently in the total amount of energy dissipated in the hand-arm system. A simple mass-spring damper model of the glove predicted that the attenuation provided by the glove was minimal, except at the highest frequencies.
在一项关于手部 - 手臂系统中阻抗测定准确性的评估中，两名受试者在10至800赫兹之间的28个频率下各接受了六次测试。此外，还研究了佩戴气垫手套的影响，并尝试建立手套的简单模型。结果表明，在频率高于约25赫兹时，手部 - 手臂系统中阻抗的测量结果与最近发表的其他数据一致，但在低于该频率时则不一致。单个受试者阻抗的平均值的标准误差约为10%。当受试者佩戴气垫手套时，阻抗仅有微小变化，因此手部 - 手臂系统中耗散的总能量也仅有微小变化。手套的简单质量 - 弹簧 - 阻尼器模型预测，除了在最高频率外，手套提供的衰减最小。
