Method for semi-active reduction of pressure oscillation in hydraulic system of e.g. cold rolling train, involves subjecting actuator to variable, where actuator varies natural frequency of oscillation absorber

摘要

The method involves detecting a pressure signal (2) using a pressure sensor (1) by permanent measurement of pressure in a hydraulic system (10). An alternating component of the pressure signal is determined and subject to a band pass filter. A variable (6) that changes over time is determined in real time using a controller (4) with respect to the alternating component. An actuator (9) is subject to the variable, where the actuator varies a natural frequency of an oscillation absorber (13) connected to the hydraulic system. An independent claim is also included for a device for semi-active reduction of pressure oscillation in a hydraulic system of a cold or warm rolling train or a strip conditioning installation for iron, steel or aluminum materials.