Abstract: A method of forming a quadrant control valve system for a hydraulic system is provided. The quadrant control valve system comprises at least one control valve assembly comprising at least one control valve, an electronic valve controller and a control valve sensor system. The method essentially comprises steps of automated quadrant-based load case analysis, automated circuit diagram synthesis and automated controller synthesis as well as implementation of the synthesized circuit diagram and implementation of the synthesized controller.

Abstract: A method of forming a quadrant control valve system for a hydraulic system is provided. The quadrant control valve system comprises at least one control valve assembly comprising at least one control valve, an electronic valve controller and a control valve sensor system. The method essentially comprises steps of automated quadrant-based load case analysis, automated circuit diagram synthesis and automated controller synthesis as well as implementation of the synthesized circuit diagram and implementation of the synthesized controller.

Abstract: A hydraulic system is provided for supplying at least one hydraulic consumer with at least one supply pump, a consumer connection, a return connection, a cooling circuit and a tank. The at least one cooling circuit comprises a cooling pump, a circulation cooling line connected to the tank and a heat exchanger. The cooling pump and the heat exchanger are disposed in the circulation cooling line. Downstream of the cooling pump and upstream of the heat exchanger, a branch line connected to the consumer connection branches off from the circulation cooling line and the cooling circuit comprises a switching valve. The switching valve can be switched between a closed position and an open position, wherein the circulation cooling line is closed in the closed position, so that the cooling pump is only connected to the branch line. In the open position, the cooling pump is connected to the heat exchanger.

Abstract: A method for implementing a data-based position sensor for an electromagnetically actuated component is provided. The data-based position sensor comprises a prediction model for the position of an electromagnetically actuated element of the electromagnetically actuated component. In the method, a training data set is generated using the electromagnetically actuated component and the prediction model is trained using the training data set. In particular, this makes it possible to determine the position of a valve element of an electromagnetically actuated fluid valve, which comprises only one electromagnet for actuating the valve element, without the use of hardware sensors for position measurement.

Abstract: A hydraulic system includes a hydraulic consumer and a first line arrangement. The first line arrangement connects the hydraulic consumer to a pressure line via a first electrically operable valve and to a tank line via a second electrically operable valve. A first hydraulic sensor is disposed in the first line arrangement downstream of the first electrically operable valve, seen from the pressure line, and upstream of the second electrically operable valve, seen from the hydraulic consumer. The hydraulic system further includes a function diagnostics unit for carrying out a first test sequence and a second test sequence. In the first test sequence, a first hydraulic test signal is applied by activating the first electrically operable valve for a first time interval. The function diagnostics unit is configured to record a measurement signal from the first hydraulic sensor and to compare the measurement signal with the first hydraulic test signal.

Abstract: A method for automatically generating an individual hydraulic component characteristic map for an individual hydraulic component V1, V2 of a hydraulic component type uses an autoencoder, which is trained using a training data set for the hydraulic component type, and a reduced individual data set, which is generated for the individual hydraulic component V1, V2, in order to automatically generate the individual hydraulic component characteristic map, for example in the form of a lookup table.

Abstract: A hydraulic system for a rotor brake of a wind turbine, where the hydraulic system has a pressure chamber, a manually operable pump device and a connection for connection to the rotor brake. The manually operable pump device is connected to the pressure chamber and the connection. The manually operable pump device comprises a coupling section for actuation. The coupling section is configured to be connected to an external device.

Abstract: An electrohydraulic control device for an adjustable hydraulic pump system includes a valve device, an electronic control unit and a first fluid sensor. The valve device includes a pressure inlet, a tank outlet and a first electromagnetically actuated valve. An outlet pressure of the first adjustable hydraulic pump system is applied to the pressure inlet. The first fluid sensor detects an actual value of a fluid parameter of the first adjustable hydraulic pump system and transmits it to the electronic control unit. The electronic control unit includes computer-based modeling of the dynamics of the first adjustable hydraulic pump system, and actuates the first electromagnetically actuated valve based on the actual value of the fluid parameter and the computer-based modeling.

Abstract: An electrohydraulic control device for an adjustable hydraulic pump system includes a valve device, an electronic control unit and a first fluid sensor. The valve device includes a pressure inlet, a tank outlet and a first electromagnetically actuated valve. An outlet pressure of the first adjustable hydraulic pump system is applied to the pressure inlet. The first fluid sensor detects an actual value of a fluid parameter of the first adjustable hydraulic pump system and transmits it to the electronic control unit. The electronic control unit includes computer-based modeling of the dynamics of the first adjustable hydraulic pump system, and actuates the first electromagnetically actuated valve based on the actual value of the fluid parameter and the computer-based modeling.

Abstract: An electrohydraulic control device for an adjustable hydraulic pump system includes a valve device, an electronic control unit and a first fluid sensor. The valve device includes a pressure inlet, a tank outlet and a first electromagnetically actuated valve. An outlet pressure of the first adjustable hydraulic pump system is applied to the pressure inlet. The first fluid sensor detects an actual value of a fluid parameter of the first adjustable hydraulic pump system and transmits it to the electronic control unit. The electronic control unit includes computer-based modeling of the dynamics of the first adjustable hydraulic pump system, and actuates the first electromagnetically actuated valve based on the actual value of the fluid parameter and the computer-based modeling.

Abstract: In a solar generator, comprising a reflector and an electrohydraulic sun-position tracking device with at least one hydraulic cylinder and a hydraulic control seat valve, the reflector can be guided via the control seat valve to follow in synchronism with the course of the sun continuously and uninterruptedly. The control seat valve for regulating a pressure medium flow permanently supplied to the hydraulic cylinder comprises a seat surface and a sealing surface permanently pressed against each other with variable contact pressure, with which the pressure medium flow can be generated as controlled leakage. The sealing surface is made of a material that can be deformed by contact pressure. In the control seat valve, the controlled leakage is set in a control position at least substantially without lifting movement exclusively by the relative material deformation of the sealing surface on the seat surface, which deformation is set via the contact pressure.

Abstract: In a solar generator, comprising a reflector and an electrohydraulic sun-position tracking device with at least one hydraulic cylinder and a hydraulic control seat valve, the reflector can be guided via the control seat valve to follow in synchronism with the course of the sun continuously and uninterruptedly. The control seat valve for regulating a pressure medium flow permanently supplied to the hydraulic cylinder comprises a seat surface and a sealing surface permanently pressed against each other with variable contact pressure, with which the pressure medium flow can be generated as controlled leakage. The sealing surface is made of a material that can be deformed by contact pressure. In the control seat valve, the controlled leakage is set in a control position at least substantially without lifting movement exclusively by the relative material deformation of the sealing surface on the seat surface, which deformation is set via the contact pressure.