| 摘要 |
PURPOSE:To stably supply air without being affected by external disturbances such as power source voltage change by detecting the rotational speed by a rotational speed detecting means and correcting the rotational speed by a setting section. CONSTITUTION:The setting section 12 comprises a basic value setting section 13 which sets the basic value, a rotational speed setting section 14 which sets the rotational speed and a proportional term computing section 21 which computes the correcting amount in proportion to the difference between the set rotational speed by the rotational speed setting section 14 and the detected rotational speed by a rotational speed detecting means 20. Provisions are also made for an integration term computing section 22 which computes the correction amount in proportion to the cumulative value of differences and an output value computing section 23 which outputs the sum of the basic output value by the basic value setting section 13, the computation result by the proportional term computing section 21 and the computation result by the integration term computing section 22. By this constitution, the motor speed can be continuously changed to supply combustion air at a stable rate. |
