| 摘要 |
PURPOSE:To alleviate an overhead in a computer by selecting a signal from a shift register at the time of accelerating, decelerating or driving a motor and a signal from frequency converting means at the constant speed drive time by a selector. CONSTITUTION:The value relative to the control of a servo motor at accelerating, decelerating or driving time is stored at the prescribed addresses in an ROM6, and selected by a counter 5 in the prescribed sequence in response to a command, and temporarily contained in a shift register 7. An output of a frequency variable unit 8 for converting a clock pulse of a reference frequency into an arbitrary frequency pulse is counted by a data counter 9, and the outputs of the register 7 and the unit 8 are switched by a mode selector 10 and outputted. Accordingly, a microcomputer having the ROM6 can be eliminated from the control at the constant speed drive time except the accelerating and decelerating time, thereby largely reducing an overhead. |
