Servovalve.

摘要

Pressure gain compensation for a single-stage servovalve of the jet pipe type. The pressure gain compensation is provided by a separate reciprocally mounted spool (36) having a feedback wire (46) connected between the spool (36) and the ejector jet (12). The spool has a differential pressure applied across the ends thereof from the receptors (14,16) disposed opposed the ejector jet. Movement of the spool applies a force feedback to the ejector jet which is proportional to the pressure differential across the receptors and is opposite the force applied to the ejector by the torque motor (20) to thereby compensate for pressure gain.