With the increase in the aging population, the demand for healthcare devices has increased. Among the aging population, many experience joint pain, muscle weakness, or poor balance. Without external help, such persons may have difficulty walking, fall easily, or experience poor quality of life. To provide this category of the population with the opportunity to exercise and walk safely and take care of themselves in daily activities, a stepper motor-powered walking assistive device is proposed and built. The device enables users with different heights to walk in suitable gaits; assists users to stand up, sit down, and step up or down stairs; automatically detects user’s intention using pressure sensors and potentiometers; and can be used outdoors for long periods. In this study, the effectiveness of the device is verified using muscle-activity measurements.
The purpose of this study is to propose a prediction method for the collapse mode and its relevant bearing capacity of a timber space frame subjected to vertica ! load such as excessive snow load・ Experimental and analytical studies for the 1/ 10 scale bastc timber structural models were carried out in order to investigate the mode type and its maximum vertical load when some type of collapse mode Qccured . As a result , the predicted results showed good agreement with the experimental ones when the spring stiffnesses of connections were estimated apPropriately through the actual loading test of connection models .
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