Linked double loop drive hydraulic valve having electrical drives/position detector and first internal loop control and external loop control internal loop speed setting.

摘要

The hydraulic valve has hydraulic sections with spring return driven by electrical drivers (42), and an electrical driver position detector (96). The electrical drive has a global servicing mechanism (80) made up of two intertwined service loops, the first loop is the internal drive loop control and an external loop setting the speed (Y) of the internal loop.