Research of different types of powered exoskeleton have been conducted for various purposes. Recently, the exoskeleton has been used in rehabilitation training for patients with walking problems. For the exoskeletons to appropriately assist the user in gait rehabilitation, it is essential to understand user"s intention. The user"s walking intention includes the temporal aspect of timing of movements and the quantitative aspect of how large the movement is. This study, quantitatively identifies the relationship between arm and leg movements during walking, the user"s quantitative intention for gait, and suggests for a control strategy to assist user"s movement accordingly for a 1DoF hip exoskeleton for hemiplegic gait rehabilitation.

A Loss-in-Weight (LIW) feeder, a type of automated measuring device, is a continuous feeder used in many mass production industries. Due to its versatility, there have been constant demands of LIW feeders in food production supply lines as well as chemical and pharmaceutical industries. In this paper, the process of designing a LIW feeder system with better performance will be examined and compared with commercial products. This system is characterized by low pass Butterworth filter and feed forward PI control. The filter is for noise disposal caused by dynamic condition of a LIW feeder. The feed forward PI control, based on linearity feature of feeders, is adequate for stable driving of the system. At the end, a possible evaluation method of LIW system will be proposed to verify the specific achievement of this paper.