| 摘要 |
PURPOSE:To control the stable speed over a high range by controlling a pulse width in response to the speed. CONSTITUTION:When the speed pulse of a speed command oscillator 1 is inputted to a sub oscillator 2 at a high speed time, the speed pulse of the oscillator 1 is outputted to a constant-pulse width generator 3 as it is. Then, the generator 3 outputs a pulse of the prescribed width corresponding to the speed pulse to AND gates 51, 52. When the speed pulse of the oscillator 1 is inputted to the oscillator 2 at a low speed time, a pulse of the prescribed interval is applied to the speed pulse of the oscillator 1 and outputted. Then, the oscillator 3 outputs a pulse of the prescribed width in response to the pulse of the oscillator 2 to the AND gates 51, 52. |
