Patent application number | Description | Published |
20080243274 | Control Method and Controller for a Mechanohydraulic System - The invention relates to a control method for a mechanical-hydraulic system having a degree of freedom per hydraulic actuator which is embodied as a control path, and a measuring sensor which is used to measure the pressure p | 10-02-2008 |
20110120202 | METHOD AND APPARATUS FOR SUPPRESSION OF OSCILLATIONS IN A ROLLING INSTALLATION - A method and an apparatus for suppression of oscillations in a rolling installation is described. By means of a hydraulic roller engagement third-octave oscillations are effectively suppressed, thus making it possible to improve the quality of the rolled material and/or the productivity of the rolling installation. A manipulated variable is supplied to an electrohydraulic actuating element that acts on at least one hydraulic actuator for the roller engagement and has a rated flow rate of ≧50 l/min. At least a portion of the frequency response at frequencies f≧80 Hz has a magnitude drop of ≦3 dB, and the phase lag φ in this frequency range satisfies the conditions f≧19·{square root over (φ)}+3.1·10 | 05-26-2011 |
20110302976 | METHOD AND APPARATUS FOR SEMIACTIVE REDUCTION OF PRESSURE OSCILLATIONS IN A HYDRAULIC SYSTEM - 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: | 12-15-2011 |
20120000543 | METHOD AND DEVICE FOR ACTIVELY SUPPRESSING PRESSURE OSCILLATIONS IN A HYDRAULIC SYSTEM - In a method and a device for actively suppressing pressure oscillations or pressure pulses in a hydraulic system of a cold or warm roll train or a strip treatment installation, the following method steps are carried out: a) detection of a pressure signal by means of 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 temporally changing actuating variable in real time with the aid of a regulator, taking at least one setpoint value and the alternating component into consideration; d) loading of at least one actuator with the actuating variable, the actuator changing a volume which corresponds to the actuating variable and is connected to the hydraulic system, as a result of which the pressure oscillations in the hydraulic system are suppressed. | 01-05-2012 |
20130307563 | Method And Device For Measuring The Speed Of A Rolling Stock - A method is disclosed for determining the speed of a rolling stock, for example the belt speed of a rolling belt, wherein electromagnetic radiation in the microwave range is transmitted to the rolling stock by at least one transmitting and receiving device and the belt speed is determined on the basis of the reflected and received reflection signal in an evaluation device. A device for carrying out such method is also disclosed. | 11-21-2013 |