| 摘要 |
<p>The appliance produces a linearly increasing pressure in a medium, charging a hydraulic cylinder. The cylinder is connected to a hydraulic system of motor and pump unit. A pressure control valve (36) is located between system and cylinder. The valve is actuated bya DC control solenoid (56), with a magnetising force proportional to its input current. The voltage is connected to the solenoid via an electronic integrator and amplifier. The circuit has a potentiometer for stepless adjustment of the magnetising force increase speed. A path valve is positioned between pump and cylinder, to charge the piston selectively on either side.</p> |
