| 摘要 |
PURPOSE:To obtain an X-Y driver having high reliability at a low cost without using a multi-core cable by transmitting the signal of a sensor provided to a stator of a linear servo motor to an inactive part with no wire and by optical modulation. CONSTITUTION:When electric power is supplied to mobile parts 20 and 27 from an external controller via a feed cable, these mobile parts are shifted in response to a command to which a prescribed stroke is given. The original point sensor signal, the deceleration sensor signal at a place near the original point, the limit sensor signal and the overrun sensor signal of the 1st linear servo motor are transmitted to the external controller through a cable 25. While the original point sensor signal, the limit sensor signal and the overrun sensor signal of the 2nd linear servo motor are modulated by the carrier signals corresponding to the types of those sensor signals via a transmission part 37 and then transmitted with no wire to a photodetecting part 40 from a light emitting diode 38. |
