| 摘要 |
<p>PURPOSE:To improve answering capacity by connecting the secondary side of a decompression valve to the pressure chamber of an actuator and driving the driving means of the decompression valve with a controller having memorized the relation between the operation amount of the actuator and the adjusted amount of an adjusting means. CONSTITUTION:The secondary side of a decompression valve 5 is connected to the pressure chamber 3 of an actuator 2. In an electric motor 20 to adjust the preset pressure of this decompression valve 5, the relation between the operation amount of the piston rod 37 of the actuator 2 and the rotational position of an adjustment screw 16 is memorized and when a desired operation amount signal 41 is input, the adjusted amount of an adjustment screw 16 for the operation amount signal 41 is calculated and a controller 22 to output a control signal is connected thereto. Consequently, as the adjustment screw 16 can be operated instantly in accordance with a control signal, the operation amount of the actuator 2 can be accurately controlled.</p> |
