Method and device for the control of a motor actuator operated by a fluid

摘要

In a method for the control of the position of a positioner operated by a fluid, which works according to the force balance principle, the cylinder space (14) of the motor actuator (1) is connected to the flow of a fluid and the working pressure in the cylinder space (14) of the motor actuator (1) is determined by controlling the discharge of the fluid. For this purpose, a control valve (28) is assigned only to the discharge conduit (286).