Method for determining the switching position of a directly controlled hydraulic valve, method for controlling a directly controlled hydraulic valve, hydraulic valve and hydraulic system

A method for controlling a directly controlled hydraulic valve, the hydraulic valve comprising a valve element and a solenoid with an armature and a coil, the armature being coupled to the valve element for joint movement between different switching positions, the method being carried out by a control unit associated with the hydraulic valve and comprising:

• impressing a coil current in the coil of the solenoid, wherein the coil current is composed of an actuating current and a measuring current profile superimposed on the actuating current;
• recording of the impressed coil current over time as a current profile;
• determining a compensation characteristic value of the hydraulic valve on a basis of the current profile;
• determining a position characteristic value of the hydraulic valve based on the current profile;
• calculating a switching position of the hydraulic valve on a basis of the compensation characteristic value and the position characteristic value;
• and
• controlling the switching position of the hydraulic valve based on the determined switching position.