| 摘要 |
PURPOSE:To obtain a controller having a high accuracy by setting the period of the edge of a timing signal and a set value to device ON and OFF control signals. CONSTITUTION:The output 107 of a frequency generator 102 mounted on the shaft of a motor 101 is converted by a waveform shaper 108 into a timing signal 109. A differentiator 110 generates a one side edge detection pulse 111 at every rising edge of the signal 109, and a monostable multivibrator 112 inputs the pulse 111 to generates a reference pulse 113 of the set value T of a pulse width. A D-flip-flop 114 outputs to a motor drive circuit 116 L level when the period of the signal 109 is shorter than the set value T and H level when longer. Thus, an accurate controller can be performed. |
