| 摘要 |
<p>PURPOSE:To improve accuracy and simplify structure, by carrying out the revolution number feedback control of an internal-combustion engine generator by means of the rotation angle control of a step motor with the counted value of pulse signals having frequency corresponding to a deflection and corresponding to the polarity of the deflection. CONSTITUTION:The revolution number of an internal-combustion engine which drives a generator 1 is detected by a revolution number detector 6, and is compared to a set value from a setting device 7 with a computing element 9 via an F-V converter. Deflection signals are amplified by a compensate circuit 10, and a VF converter 11 outputs up-count pulses UP and down-count pulses DP which have frequency corresponding to the amplified deflection signals and correspond to the polarity of the deflection to an updown counter 12 and a location detecting circuit 13. The rotation angle of a step motor 4 which drives a throttle valve 3 can be controlled corresponding to the counted value of the updown counter 12 via a magnetization circuit 14 and a driving circuit 15.</p> |
