Beard George F, Griffin Michael J
Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom.
Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom.
Appl Ergon. 2014 Nov;45(6):1547-57. doi: 10.1016/j.apergo.2014.05.002. Epub 2014 Jun 16.
The discomfort caused by lateral oscillation, roll oscillation, and fully roll-compensated lateral oscillation has been investigated at frequencies between 0.25 and 1.0 Hz when sitting on a rigid seat and when sitting on a compliant cushion, both without a backrest. Judgements of vibration discomfort and the transmission of lateral and roll oscillation through the seat cushion were obtained with 20 subjects. Relative to the rigid seat, the cushion increased lateral acceleration and roll oscillation at the lower frequencies and also increased discomfort during lateral oscillation (at frequencies less than 0.63 Hz), roll oscillation (at frequencies less than 0.4 Hz), and fully roll-compensated lateral oscillation (at frequencies between 0.315 and 0.5 Hz). The root-sums-of-squares of the frequency-weighted lateral and roll acceleration at the seat surface predicted the greater vibration discomfort when sitting on the cushion. The frequency-dependence of the predicted discomfort may be improved by adjusting the frequency weighting for roll acceleration at frequencies between 0.25 and 1.0 Hz.
研究了在无靠背情况下，坐在刚性座椅上以及坐在柔性坐垫上时，频率在0.25至1.0赫兹之间的横向振动、侧倾振动和完全侧倾补偿横向振动所引起的不适。通过20名受试者获得了振动不适的判断以及横向和侧倾振动通过座垫的传递情况。相对于刚性座椅，坐垫在较低频率下增加了横向加速度和侧倾振动，并且在横向振动（频率小于0.63赫兹）、侧倾振动（频率小于0.4赫兹）和完全侧倾补偿横向振动（频率在0.315至0.5赫兹之间）期间也增加了不适感。座椅表面频率加权横向和侧倾加速度的均方根预测了坐在坐垫上时更大的振动不适。通过调整0.25至1.0赫兹频率之间侧倾加速度的频率加权，可以改善预测不适的频率依赖性。
