Hashizume Tsutomu, Kitagawa Hiroshi, Ueda Hisatoshi, Yoneda Ikuo, Booka Masayuki
Toyo University.
The Hyogo Institute of Assistive Technology.
Stud Health Technol Inform. 2017;242:778-781.
The efficiency and the rolling resistance in wheelchair propulsion play an important role in the comfort and the health of wheelchair users in daily life. Here we identify these fundamental interactions of wheelchair-user system on treadmill and on track. We measured the oxygen uptake (input) and the propelling torque (output) as the parameters with velocity and tire pressure. The efficiency increased about 9-13% as the velocity increased on treadmill and it increased around 11-12% as the tire pressure reduced on track. The mean coefficient of rolling resistance was 0.012 on treadmill and that were 0.016 (200 kPa) and 0.026 (30 kPa) on track. Our experimental results indicated that the efficiency and the rolling resistance were strongly dependent on the velocity and tire pressure.
轮椅推进过程中的效率和滚动阻力对轮椅使用者日常生活中的舒适度和健康状况起着重要作用。在此，我们确定了轮椅 - 用户系统在跑步机和跑道上的这些基本相互作用。我们测量了摄氧量（输入）和推进扭矩（输出）作为与速度和轮胎压力相关的参数。在跑步机上，随着速度增加，效率提高约9 - 13%；在跑道上，随着轮胎压力降低，效率提高约11 - 12%。跑步机上滚动阻力的平均系数为0.012，而在跑道上，轮胎压力为200 kPa时滚动阻力系数为0.016，轮胎压力为30 kPa时滚动阻力系数为0.026。我们的实验结果表明，效率和滚动阻力强烈依赖于速度和轮胎压力。
