| 摘要 |
Measuring method and device for determining the displacement of a movable part of an actuator such as the axial and/or rotational movement of the piston rod (7) in relation to the cylinder housing (2) with a pressurized medium-operated cylinder (1). Optical means (12) are applied, which can be aimed at the outer surface of the movable part of an actuator, such as the piston rod (7). The light reflected by the movable part (7) is absorbed by an absorbing chip (13) suitable for it, which electronically, by means of a converter (16) produces a signal, from which the position or the velocity of the movable part (7) can be determined. The piston rod (7) can have undergone the usual polishing processing. The optical means (12) comprise the means as they are applied in a computer mouse. <IMAGE> |
