| 摘要 |
PURPOSE:To prevent a step motor from stepping out by accumulating a pulse train input once in an accumulator, thereby absorbing the abrupt variation of the interval of the input pulse. CONSTITUTION:An accumulator 9 adds the prescribed increment to the stored value at the time whenever the pulse input is obtained, and the result is stored as a new value. An arithmetic unit 10 reads out the stored value of the accumulator 9, calculates the next correcting pulse generating time, generates a correcting pulse at the calculated time, and subtracts the prescribed value by the stored value of the accumulator. This corrected pulse is supplied to a drive circuit 7 to rotate a step motor 8. |
