| 摘要 |
PURPOSE:To enable to accurately shift the driven body to a prescribed position by a method wherein the pulse motor is revolved while a driving pulse number is being corrected by the corrective revolution detecting pulse number obtained on the basis of the revolution of the pulse motor. CONSTITUTION:The output pulse of a driving pulse generating circuit 11, with which the pulse motor will be driven, is inputted to a counter 12, and the output of which is inputted to a comparison circuit 13 and compared with the output of a counter 18. The output of a sensor, with which the revolution of the motor 3 will be detected, is applied to the counter 18 through the intermediary of a multiplying circuit 17. The decision whether the output of the comparison circuit 13 is positive or negative is given by a decision circuit 14, and in accordance with the above decision, said output is applied to the counter 12 through a correction circuit 15 or 16. The output of the counter 12 is compared with the output of a controlling circuit 9 at a comparison circuit 10, and it is then given to the driving pulse generating circuit 11. |
