| 摘要 |
PURPOSE:To obtain a smooth operation characteristic by driving a pulse motor with a frequency proportional to output pulse frequency from a computer and also with a pulse ready for regulating its frequency ratio arbitrarily and also free from being limited by a control period of the computer. CONSTITUTION:A data indicating the coordinate position of a figure is inputted to a computer 1 from a terminal 2, and a pulse to command a drive in the directions of X axis and Y axis is outputted from the computer 1. Each circuit with reference to X axis and Y axis is similar in this connection. In a circuit with reference to X axis, an accumulator comprising an adder 31 and a latch 41 which receives a residue Rx of an updown counter 21 and an output frequency f of a clock generator 6 outputs an overflow pulse Xo through CA terminal of the adder 31. By feeding back the pulse Xo to a down counter D of the updown counter 21 by way of a frequency dividing circuit 51, said pulse Xo will work as a driving pulse for which a time constant of driving pulse generating circuit is taken into consideration. |
