The 2-DOF control system has an advantage to make some standard which are the traceability for the desired value and the suppression for the disturbance. For example the pneumatic motor system for the axial piston type is applied to determine the position for the desired value. In this paper the safety control system of the avoiding impact is designed and it is expected to protect the unintentional accident like a falling down on the frozen sidewalk while walking by using the wearable sensors. The simulation results is discussed by the new proposal control design which is constructed by the stable merge with the loop transfer function.
