Abstract: The invention relates to a battery holder (1) for galvanic cells, in which a first honeycomb structure (2.1 to 2.n), comprising a lower and an upper basic cooling body (3.1, 3.2) and at least one intermediate cooling body (4), is provided, wherein in each case, galvanic cells can be arranged on a cell level (5.1 to 5.n) in each case between one of the basic cooling bodies (3.1, 3.2) and one of the intermediate cooling bodies (4) and/or between two of the intermediate cooling bodies (4), wherein the galvanic cells of one of the cell levels (5.1 to 5.n) are displaced to the side to the galvanic cells of at least one adjacent cell level (5.1 to 5.n) by half the width of a galvanic cell, and wherein the intermediate cooling body (4) and the basic cooling bodies (3.1, 3.2) are formed in an area between the galvanic cells according to the outer contours of the galvanic cells, and wherein each of the cooling bodies (3.1, 3.

Abstract: A device for measuring the torque, the direction of rotation, and the speed of rotation of a shaft of a transmission, in particular an output shaft of an azimuth transmission, includes bands configured to be mounted in a fixed position on an outer circumference of the shaft. The bands are configured to be detected by measuring sensors and allow torsion of the shaft to be measured. Each of the measuring sensors has a Hall effect sensor, and the bands are respectively arranged at two different positions on the outer circumference of the shaft. Each of the bands includes polygonal apertures and/or depressions having webs located between the apertures and/or depressions. The webs are configured to be detected by the measuring sensors. A method includes operating the device to measure the torque, the direction of rotation, and the speed of rotation of the shaft.

Abstract: A method for determining a bending angle of a rotor blade of a wind turbine system includes step of reading in an acceleration signal which represents an acceleration of the rotor blade acting essentially perpendicularly with respect to a rotor plane. In addition, the method includes a step of determining the bending angle of the rotor blade of the wind turbine using the acceleration signal.

Abstract: The invention relates to a battery holder (1) for galvanic cells, in which a first honey-comb structure (2.1 to 2.n), comprising a lower and an upper basic cooling body (3.1, 3.2) and at least one intermediate cooling body (4), is provided, wherein in each case, galvanic cells can be arranged on a cell level (5.1 to 5.n) in each case between one of the basic cooling bodies (3.1, 3.2) and one of the intermediate cooling bodies (4) and/or between two of the intermediate cooling bodies (4), wherein the galvanic cells of one of the cell levels (5.1 to 5.n) are displaced to the side to the galvanic cells of at least one adjacent cell level (5.1 to 5.n) by half the width of a galvanic cell, and wherein the intermediate cooling body (4) and the basic cooling bodies (3.1, 3.2) are formed in an area between the galvanic cells according to the outer contours of the galvanic cells, and wherein each of the cooling bodies (3.1, 3.

Abstract: The disclosure relates to a method for determining an estimated value for at least one measured variable of a wind turbine. The measured variable represents a bending torque on a blade root of a rotor blade of the wind turbine from a rotor plane. The method includes reading in the measured variable and an angle of attack for the rotor blade. The method further includes adapting a model, which simulates an estimated value of the measured variable on the basis of a modeling instruction for a relationship between the measured variable and the angle of attack. The model is adapted using the read-in measured variable and the read-in angle of attack. The method also includes providing the estimated value for the at least one measured variable using the model.

Abstract: An air spring and damper unit for vehicles has, as operating spaces, at least two pressure spaces filled with compressed air and connected to one another via flow channels. The pressure spaces have movable walls in the form of rolling bellows or folding bellows, wherein a pilot-controlled main valve which can be loaded with a control pressure on the low-pressure side is configured at least in one flow direction in a first flow channel.

Abstract: A method for microstructuring surfaces of a workpiece includes the following steps: a) placing a workpiece to be structured into a liquid medium; b) providing a light source for producing a cavitation bubble in the liquid medium; and c) producing a cavitation bubble using the light source in such a way that the subsequent collapse of the cavitation bubble structures the surface of the workpiece, in particular material is removed from the surface.