Abstract
It is important to develop the orthosis which improves the Quality of Life (QOL) and maintains health conditions. As one of the treatment methods done to lumbago(low back pain), the waist fixation method with the spinal brace or the orthosis is prescribed. A waist active orthosis implemented with pneumatic flexible actuators have been developed. However, several problems of the previous actuator were that the strain and the generated force were small for the orthosis.Thus, this paper proposesthe improved actuator for the orthosis. Theimproved actuator is modeled and the reliability of static and dynamic model is validated through experiment. As a result, it was confirmed that the improved actuator had the strain of 2 times and the generated force of 1.3 times, in comparison with the previous actuator. And the dynamic model including volume of actuatorcould be represented by a second-order form with a dead time.
Highlights
It is important to improve the QOLand maintain the health condition for elderly people
Several problems of the previous actuator were that the strain and the generated force were small for the orthosis.this paper proposesthe improved actuator for the orthosis
1) Problem difficult to meet on-demand requirements2) Problem to suppress blood stream 3) Problem difficult to customize In order to solve these issues, a waist active orthosis implemented with pneumatic flexible actuators is developed and pressure control method of pneumatic flexible actuators is established
Summary
It is important to improve the QOLand maintain the health condition for elderly people. An orthosis is wrapped around the waist made of cloth and the rubber textile. The existing orthosis have the three difficult and important issues. 1) Problem difficult to meet on-demand requirements2) Problem to suppress blood stream 3) Problem difficult to customize In order to solve these issues, a waist active orthosis implemented with pneumatic flexible actuators is developed and pressure control method of pneumatic flexible actuators is established. The customizing issues have not been solved.In this study, firstly, the prototype of pneumatic textile actuator (hereafter called PTA) has been developed. The improved actuator changes to the driving method that can be contracted directly by a silicone tube. The improved actuator is modeled and the reliability of static and dynamic model is validated through experiment
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