Abstract
In this paper, we propose a new type of mat to prevent bed sores for disadvantaged people. With respect to the system, the mat is constructed with 16 actuators. Further, each actuator has a sponge that is coated with a cloth and an airtight sheet. Moreover, when air is charged into the actuator, the stiffness of the actuator can be controlled. By using these actuators, we clear the effectiveness of the mat.
