No abstract

In the field of industrial manufacturing, there are still many parts processed manually. To overcome this problem, a motion-copying system is proposed to make a robot execute the work of a human. However, processing motion data and reproducing new motion data that can be applied to various scenes are required to extend the versatility of the motion-copying system. In this paper, a temporal compensation method is proposed in order to maintain the reproducibility of a saved human motion because loaded human motion data are different from saved human motion data when motion data is processed by spatial scaling. When saved human motion data is processed by spatial scaling, reaction force of saved human motion data and that of loaded human motion data are different, and the reproducibility decreases. Here, temporal compensation, which is based on temporal scaling, is proposed in order to equalize the reaction force of saved human motion data and that of loaded human motion data. Validity was confirmed by the using experiments that save and reproduce writing motion.

Variabilities or fluctuations in foot clearance are considered as a risk factor for falls during walking in older adults. The present study aimed to investigate whether the foot trajectory variability can be reduced by applying vibratory stimulation to the foot's plantar surface during walking. Ten healthy adults were asked to walk on a treadmill with vibratory shoes, and body kinematics were measured. Changes in the mean absolute deviations of the foot trajectory and joint and trunk angles were compared between the periods of applied or absent vibratory stimulus. Our results demonstrated that toe trajectory variability in the swing phase was significantly smaller when a vibratory stimulus was applied. Applying vibratory stimulus to the soles of the forefoot could potentially be used to reduce foot trajectory variability, which could reduce the risk of trips and associated falls during walking in older adults.

The mitral annulus flattened and lost its saddle shape without expanding while in the LCX and RCA positions. The greater percent change in the height of the mitral annulus may aggravate mitral regurgitation.

In the field of industrial processing, there are still many parts performed manually. For this problem, a motioncopying system was proposed to put into practical use to create the labor force instead of human. Moreover, motion data that can be processing and reproducing are needed to extend the viability of motion-copying system. In this paper, a temporal compensation method is proposed in order to maintain the reproducibility of saved human motion. Reaction force of loaded motion data is different from saved one when the data is processed by a spatial scaling. Here, a temporal compensation that is based on the variable temporal scaling is introduced in order to make equal reaction force of saved human motion data and that of loaded human motion data. The temporal processing of motion data is based on the first-order hold interpolation. It can process the motion data and solve the resample problem that occurs when discrete motion data is treated at the same time. Validity was confirmed by the experiments.