Verfahren zur elektrohydraulischen Ansteuerung von verstellbaren hydraulischen Bauteilen und dafür vorgesehene Steuereinrichtung

摘要

In a process for electrohydraulic actuation of adjustable hydraulic components, in an electronic unit (3) a set position and an actual position are compared with one another at (7), an electrical output signal is produced accordingly, an electromagnetic valve (2) is actuated with the output signal and the supply of fluid to an actuator (1) is controlled by the valve (2). To obtain low manufacturing costs for a control device for implementing the process and at the same time a high level of safety, expected actual position or the expected change in the actual position of the actuator (1) is determined from the output signal or a signal corresponding to it in an evaluating unit (11) and compared at (12) with the actual position really achieved and detected by a sensor (6) or the change in the actual position really achieved. A warning signal is produced in the event of deviations beyond a preset tolerance. <IMAGE>