| 摘要 |
A method and an apparatus for semiactive reduction of pressure oscillations in a hydraulic system of a cold or hot rolling mill or strip handling installation for iron, steel or aluminum materials has the following method steps in the stated sequence: a) detection of a pressure signal by a pressure sensor by permanent measurement of a pressure in the hydraulic system; b) determination of an alternating component of the pressure signal; c) determination of at least one manipulated variable, which varies over time, in real time with the aid of a regulator, taking account of the alternating component; d) application of the manipulated variable to at least one actuator, with the actuator changing a natural frequency of an oscillation damper which is connected to the hydraulic system, and thus reducing an amplitude of the pressure oscillations in the hydraulic system. |
