| 摘要 |
<p>A system for numerically controlling a device such as a machine tool employs a general-purpose motor (11) in a part thereof, instead of a servo motor. In this system, the current position of a shaft (10) which is driven by the general-purpose motor (11) is detected (14, 9) and is compared with a command value within an NC program. When the current position is close to the command position, a brake signal (MBR, BR) is output in order to apply a brake to, for example, the general-purpose motor (11), and the supply of rotational signals (MCW, MCCW) to the general-purpose motor (11) is inhibited to stop the general-purpose motor (11) at the command position. </p> |
