| 摘要 |
<p>A pneumatic servo using two air pressure sources (D, A) and including a rigid shell (1) divided by a movable sealing wall (2) into at least two working chambers (T1, T2). The movable wall may be actuated by a pressure difference, caused by the actuation of a three-way valve (5), between the pressures supplied to the chambers, in order to drive a pneumatic piston (4) supporting the valve. The movable wall (2) comprises a rigid skirt (3) with two walls (31, 32) defining therebetween a fixed space (V) that is in turn divided into two reaction chambers (R1, R2) by a partition (11) that constitutes, in said servo, the reaction member intended to counter the servo actuation force so that the output force applied to the servo push rod (7) may be controlled by said actuation force.</p> |
