| 摘要 |
A linear measurement and control apparatus uses a press roll for directly engraving the surface of a linear control bar and then engaging the control bar which is attached to a machine element, to measure its linear motion and thereby identifying its position. As the machine element moves, the attached control bar transmits its motion to the press roll, inducing rotation. The press roll is attached to a measurement disk having a sensory pickup so that rotation of the press roll is sensed. Light transmission is used for sensing motion of a measurement disk and for counting pulses for determining position. |
