Passive hydraulic control with postioning adjustment using directed oil change by changing volumes of liquid in linked pistons

摘要

Hydraulic control through which volumes (V 1, V 2) are linked on both sides of the pistons of one or more hydraulic cylinders, so that when the piston is pushed into one of the cylinders (1) the piston as a consquence is pushed into one of the other cylinders, thus achieving sequence control, with the sume of the cylinder paths of all cylinders is constant. If there is a position error beyond a predefined limit as indicated by the indicators (3), it can be corrected by changing the hydraulic liquid between the two volumes.