| 摘要 |
<p>The drive (2) has a variable movable pump (8) generating a supply pressure to be returned to a control piston (12) through a return line (25) such that force is exerted along an operative direction of an actuator (14) i.e. electrically controlled proportional magnet, on the piston. The piston and supply pressure of the pump are maintained in a force-balanced position in a control cylinder (11) when the actuator is in-actuated by a preload element (16) i.e. compression spring. A side of a servo control unit (30) is actuated with control pressure, and the pump swings out in the cylinder.</p> |
