Abstract
A flexible character of pneumatic cylinder seems to fit as an actuator which assists a human action. If the human want to move the assist device that is cylinder to desired position, he can achieve this purpose by pushing or pulling itdirectly to such position. When the human pushes/pulls the cylinder directly, a pressure change in the cylinder will occur and if the change is detected and used, it is more better for human-machine inter facing, although the pressure change owing to human and disturbance occurred by action of control mechanism must be distinguished. In this report, the position control method of pneumatic cylinder by using the pressure change made by human is proposed. Todistinguish the signal and disturbance, the signal pattern of pressure change is analyzed and unique signal pattern when human pushes/pulls the cylinder is used to moves the cylinder to his desired position.
